Apnea reported in 10–12% of neonates with congenital heart defects receiving IV or intra-arterial alprostadil; usually occurs during first hour of IV or intra-arterial infusion, particularly in neonates weighing <2 kg at birth.
Use in neonates only when adequate treatment facilities for assisted ventilation are readily available; monitor respiratory status throughout therapy.
Used to facilitate attainment of a sexually functional erection in males with erectile dysfunction (ED, impotence).
Second-line therapy for treatment of ED in patients not responding to psychotherapy/behavioral therapy, vacuum constriction devices, and/or oral, selective phosphodiesterase (PDE) type 5 inhibitors (e.g., sildenafil, tadalafil, vardenafil) and in whom attempts at identifying and modifying any drug-related (e.g., certain antihypertensive agents) or other potentially reversible medical causes of ED have proved inadequate.
Selective oral PDE type 5 inhibitor therapy preferred as first-line treatment of ED unless contraindicated.
Intraurethral therapy generally preferred over intracavernosal vasoactive therapy because it is less invasive; however intracavernosal therapy is most effective nonsurgical treatment for ED.
Consider intraurethral therapy for patients with inadequate responses to or who are not candidates for selective oral PDE type 5 inhibitor therapy.
Effective in patients with organic (neurogenic and/or mild to moderate vasculogenic) ED or with psychogenic ED.
Not recommended for simply enhancing erections in men who are not impotent† because of GU risks. (See Priapism and also GU Effects, under Cautions.)
Manufacturers state that safety and efficacy of alprostadil in combination with other vasoactive therapy for erectile dysfunction not established and currently not recommended. However, American Urological Association (AUA) and other clinicians state that combination therapy with other intracavernosal vasoactive agents increased efficacy and decreased adverse effects relative to alprostadil alone. Combined therapy with intraurethral alprostadil and vacuum constriction device or oral selective PDE type 5 inhibitor increased efficacy relative to alprostadil alone.
Adjunct to other vascular testing (e.g., duplex ultrasonography, cavernosometry/cavernosography, angiography, radioisotope penogram) in differential diagnosis of ED and evaluation of hemodynamic status of erectile tissue.
Used to provide adequate circulation and oxygenation and prevent or correct resultant acidemia until corrective or palliative surgery can be performed.
Do not use in neonates with respiratory distress syndrome. (See Respiratory Distress Syndrome under Cautions.)
Dosage and Administration
General
ED
Initiate and titrate dosage in medical setting (e.g., clinician’s office); patient must remain in this setting until complete detumescence occurs.
Carefully individualize dosage according to patient’s erectile response toward therapeutic goal of achieving erection satisfactory for intercourse, but persists for ≤1 hour. (See Priapism under Cautions.)
Titrate dosage slowly to lowest possible effective level to avoid priapism. Erections persisting >1 hour increase risk of priapism. (See Priapism under Cautions.)
Initiate maintenance home treatment regimens at dosage determined as optimal during titration in medical setting. Further dosage adjustments may be required. Dosage determined by clinician in medical setting should not be changed without consulting clinician.
Use only by trained personnel in facilities providing pediatric intensive care. Monitor respiratory status of neonate throughout administration; facilities and equipment for assisted ventilation should be readily available. (See Boxed Warning.)
Adjust dosage using lowest possible effective dosage for shortest period necessary to provide desired effects.
If long-term infusion considered (e.g., when surgery deferred in poor-risk neonate), carefully weigh risks of prolonged therapy against anticipated benefits. (See GI Effects, Musculoskeletal Effects, and also Cardiovascular and Cerebrovascular Effects, under Cautions.)
In neonates with restricted pulmonary blood flow, monitor measures of improved blood oxygenation.
In neonates with restricted systemic blood flow, monitor measures of improved systemic BP and blood pH.
Periodically monitor arterial BP via umbilical artery catheter, auscultation, or Doppler transducer. (See Cardiovascular and Cerebrovascular Effects under Cautions.)
Administration
Administer by continuous IV or intra-arterial infusion to maintain patency of ductus arteriosus in neonates with congenital heart disease.
Administer by intracavernosal injection for treatment and diagnosis of ED or by intraurethral suppository for treatment of ED.
IV and Intra-arterial Infusion
For solution and compatibility information, see Compatibility under Stability.
To maintain patency of ductus arteriosus, administer by continuous IV infusion into a large vein (peripheral or central); preferred route of administration.
Alternatively, administer by controlled intra-arterial infusion through an umbilical artery catheter placed at ductal opening or main pulmonary artery.
If flushing occurs during intra-arterial infusion, reposition catheter or convert to IV infusion.
A controlled-infusion device (e.g., an electronic volumetric controller, volumetric IV infusion pump) or other apparatus to ensure precise control of the flow rate should be used; inadvertent rapid administration could result in toxicity (e.g., apnea). (See Boxed Warning.)
Dilution
Alprostadil for injection concentrate must be diluted prior to IV or intra-arterial infusion.
Add 1 mL of alprostadil concentrate to 0.9% sodium chloride or 5% dextrose injection to provide solution containing 2–20 mcg/mL of drug, depending on controlled-infusion device employed and needs of neonate.
When using a device with a volumetric infusion chamber, add appropriate volume of diluent to chamber first and then add 1 mL of drug concentrate to diluent.
Dilution of Alprostadil Concentrate for Injection
Add 1 vial (volume of 500 mcg/mL concentrate)
to Compatible IV Solution (volume of solution)
to Make (final dilution concentration)
1 mL
250 mL
2 mcg/mL
1 mL
100 mL
5 mcg/mL
1 mL
50 mL
10 mcg/mL
1 mL
25 mL
20 mcg/mL
Rate of Administration
Sample infusion rates to deliver a dosage of 0.1 mcg/kg of body weight per minute can be obtained from the following table:
Infusion Rates to Provide Dosage of 0.1 mcg/kg per Minute
Final Dilution Concentration
Infusion rate
2 mcg/mL
0.05 mL/minute per kg of body weight
5 mcg/mL
0.02 mL/minute per kg of body weight
10 mcg/mL
0.01 mL/minute per kg of body weight
20 mcg/mL
0.005 mL/minute per kg of body weight
Decrease rate of infusion immediately if clinically important decrease in arterial BP, fever, or hypotension occurs. (See Cardiovascular and Cerebrovascular Effects under Cautions.) Once symptoms subside, increase rate cautiously, if necessary.
Intracavernosal Administration
Administer by intracavernosal injection into the penis.
Vary injection site to minimize adverse effects related to repeated local injection.
Prior to administration using Caverject® impulse® dual-chambered syringe system, set dose to be delivered by slowly turning the end of the plunger rod clockwise until the number visible in the dose window matches the appropriate dose of the drug (in mcg).
Reconstituted solutions of alprostadil for intracavernosal injection are intended for single-use only. Properly dispose of single-use delivery device and any remaining solution following use.
Reconstitution
Caverject®: Reconstitute vial labeled as containing 20 or 40 mcg of alprostadil powder with 1 mL of bacteriostatic or sterile water for injection (with benzyl alcohol) supplied by manufacturer, to provide a solution containing 20.5 or 41.1 mcg/mL, respectively, and delivering 20 or 40 mcg/mL. (See Pediatric Use under Cautions.) Use a 3 mL syringe with a 27- to 30-gauge, 0.5-inch needle. Swirl contents of vial gently until clear solution obtained. Withdraw desired dose of reconstituted solution into same syringe prior to administration.
Caverject® impulse® dual-chambered syringe system: Reconstitute by turning plunger rod clockwise until rod meets resistance to force diluent (sterile bacteriostatic water for injection) into chamber containing sterile powder. Mix contents of syringe thoroughly by turning device upside down several times until solution is clear.
edex® dual-chambered system: Place cartridge containing alprostadil lyophilized powder into edex® injection device and push plunger of device until 2 gray rubber stoppers touch to force diluent (1.075 mL of 0.9% sodium chloride injection) into upper chamber containing drug powder. Gently move injection device back and forth until solution is clear. Do not use if cartridge is damaged or cake of drug powder is substantially <(3/8) inch in thickness.
Intracavernosal Injection Technique
Hold head (glans) of penis (if uncircumcised, pull back foreskin initially) between thumb and forefinger, and stretch lengthwise along thigh while sitting upright or slightly reclined. Inject into a corpus cavernosum of the penis (underneath the tunica albuginea along dorsolateral aspect of proximal third of penis) using a steady motion. Avoid blood vessels, corpus spongiosum, subcutaneous tissue, urethra, and dorsal neural vascular structures as injection sites.
Inject dose slowly (over 5–10 seconds); apply pressure to injection site with alcohol swab for 5 minutes (or until bleeding stops) after needle is withdrawn. If bleeding continues or recurs, abstain from intercourse. (See Hematologic Effects under Cautions.)
If solution does not inject easily or if a burning pain at injection site occurs, reposition needle by moving needle slightly or partially withdrawing needle until solution can be injected easily and painlessly.
If needle bends severely at anytime during reconstitution or injection, discard needle, and replace with new unused needle.
Rate of Administration
Inject slowly (over 5–10 seconds).
Intraurethral Administration
Administer intraurethrally as a suppository.
Urinate immediately prior to administration and gently shake penis to remove excess urine. Microsuppository (medicated pellet) is designed to dissolve in small quantity of urine remaining in urethra after urination.
Insert intraurethral suppository according to manufacturer's instructions. After insertion, inspect applicator to confirm that urethral suppository is no longer in applicator tip. If some residual medication is left in applicator, repeat insertion procedure. Urination or dribbling immediately following intraurethral administration may result in loss of drug from urethral area.
After insertion of suppository, hold penis upright, and stretch to its full length. Roll penis firmly between hands for ≥10 seconds to ensure that drug distributes adequately along walls of urethra. If a burning sensation occurs, roll penis for additional 30–60 seconds or until burning subsides.
After administration, increase blood flow to penis by sitting, standing, or walking for 10 minutes. Lying down (especially on back) immediately after administration may reduce penile blood flow and subsequent development of erection. During sexual activity, use positions that favor blood flow into penis.
Neonates: Initially, 0.1 mcg/kg per minute. However, adequate clinical response reported with 0.05 mcg/kg per minute in some neonates.
If response inadequate, may increase dosage gradually to ≤0.4 mcg/kg per minute. However, dosages >0.1 mcg/kg per minute generally have not produced additional benefit.
After therapeutic response achieved, reduce infusion rate to provide the lowest possible dosage that maintains response; progressively taper dosage from 0.1 down to 0.05 to 0.025 to 0.01 mcg/kg per minute until lowest effective dose reached.
Continue therapy until surgical repair is complete, usually ≤24–48 hours after initiation.
If complications occur, consider lower infusion rate or discontinuance of infusion. (See IV and Intra-arterial Infusion: Rate of Administration under Dosage and Administration.)
If apnea or bradycardia occurs, discontinue infusion and initiate appropriate treatment. In some cases, reinitiate infusion cautiously if continued therapy considered necessary.
Adults
ED
Initiation and Titration for ED of Neurogenic, Vasculogenic, Psychogenic, or Mixed Etiology
Intraurethral Suppository
Initially, 125 or 250 mcg. If no response, increase subsequent doses in a stepwise manner to 500 mcg or 1 mg, as needed, on separate occasions. Use ≤2 urethral suppositories within 24 hours.
Initiation and Titration for ED of Pure Neurogenic Etiology
Intracavernosal Injection
Caverject® vials and single-use, dual-chambered injection device: Initially, 1.25 mcg. If no response, double second dose to 2.5 mcg after ≤1 hour. Do not administer >2 doses within 24 hours. If additional dosage titration required, administer 5 mcg during next 24 hours. Increase subsequent dosage in 5-mcg increments, with each incremental increase separated by ≥24 hours, until optimum response achieved. (See General: ED, under Dosage and Administration.)
edex® reusable dual-chambered injection device: Initially, 1.25 mcg. If no response, double second dose to 2.5 mcg after ≤1 hour; if still no response, increase to 5 mcg after ≤1 hour. Increase subsequent dosage in 5-mcg increments, until optimum response achieved. (See General: ED, under Dosage and Administration.) If a partial response observed at any point in dosage titration, wait ≥1 day before resuming dose titration.
Initiation and Titration for ED of Vasculogenic, Psychogenic, or Mixed Etiology
Intracavernosal Injection
Caverject® vials and single-use, dual-chambered injection devices: Initially, 2.5 mcg. If partial response observed, double dose to 5 mcg after ≤1 hour. If no response, increase second dose to 7.5 mcg after ≤1 hour. Administer ≤2 doses within ≤24 hours. If additional titration required, increase dosage in increments of 5–10 mcg at intervals of ≥24 hours until optimum response achieved. (See General: ED, under Dosage and Administration.)
edex® reusable dual-chambered injection device: Initially, 2.5 mcg. If no response, increase second dose to 7.5 mcg after ≤1 hour, followed by increments of 5–10 mcg at intervals of ≤1 hour until a response occurs. If partial response observed with 2.5 mcg, wait ≥24 hours before doubling dose to 5 mcg, followed by increments of 5–10 mcg at intervals of ≥24 hours until optimum response achieved. (See General: ED, under Dosage and Administration.)
Maintenance (Self-administration)
Intraurethral Suppository
Initially, self-administer dose determined as optimal during titration in a medical setting (e.g., physician’s office); administer ≤2 urethral suppositories within a 24-hour period.
Intracavernosal Injection
Initially, self-administer dose determined as optimal during titration in a medical setting (e.g., physician’s office); administer no more frequently than 3 times weekly with >1 day elapsing between each dose.
If required, adjust dosage only after consultation with a clinician (not independently by the patient), following the same initial titration guidelines.
Diagnostic Use
Intracavernosal Injection
Adjunct to other vascular testing: Use single dose that produces firm erection.
Intraurethral suppository or intracavernosal injection: Anatomic deformation of penis (e.g., angulation, cavernosal fibrosis, Peyronie’s disease).
Intraurethral suppository or intracavernosal injection: Men for whom sexual activity is inadvisable (e.g., underlying cardiovascular status). (See Assessment of Patients with Erectile Dysfunction under Cautions.)
Intraurethral suppository or intracavernosal injection: Women and children, including neonates.
Intraurethral suppository or intracavernosal injection: Use with penile implants.
Intraurethral suppository: Certain GU tract disorders (e.g., urethral stricture or obstruction, balanitis, acute or chronic urethritis, severe hypospadias and curvature, anuria).
Intraurethral suppository: Use with indwelling urethral catheter.
Intraurethral suppository: Unprotected sexual intercourse with pregnant women. (See Pregnancy under Cautions.)
Risk of gastric outlet obstruction secondary to antral hyperplasia in neonates receiving alprostadil injection for arteriosus-dependent congenital heart disease; associated with prolonged therapy (e.g., cumulative dose and duration of therapy).
Closely monitor neonates receiving recommended dosages for >120 hours for evidence of antral hyperplasia and gastric outlet obstruction. During prolonged therapy, carefully weigh possible risk of gastric outlet obstruction against potential benefits.
Priapism
Possible prolonged erection (persisting for 4–6 hours) or priapism (erection persisting for >6 hours).
May result in penile tissue damage and permanent loss of potency if not treated immediately (e.g., aspiration of cavernosal blood, intracavernosal injection of an α-adrenergic agonist or dopamine).
Minimize risk of prolonged erection by slowly titrating to lowest possible effective dosage. Consider decreased dosage or discontinuance in patients who develop priapism or prolonged erection. (See General: ED, under Dosage and Administration.)
Cardiovascular and Cerebrovascular Effects
Risk of symptomatic hypotension and syncope in patients using intraurethral alprostadil; monitor patients during dosage initiation and titration for manifestations of such effects.
Hypotension and/or dizziness reported following intracavernosal administration; may result from increased peripheral blood levels of prostaglandin E1, especially in patients with significant corpora cavernosa venous leakage.
Possible hypotension and bradycardia in neonates receiving IV or intra-arterial therapy. If bradycardia occurs, discontinue infusion and institute appropriate therapy; (See Dosage: Pediatric Patients under Dosage and Administration) if hypotension occurs, reduce infusion rate and institute appropriate therapy, if necessary. (See IV and Intra-arterial Infusion: Rate of Administration under Dosage and Administration.)
Morphologic changes in ductal and pulmonary arteries observed in infants receiving short- or long-term IV or intra-arterial therapy at usual recommended dosages.
General Precautions
Respiratory Distress Syndrome
Do not use in neonates with respiratory distress syndrome; closure of ductus arteriosus is necessary to prevent overload of pulmonary circulation in such neonates.
Prior to initiating therapy in neonates, make a differential diagnosis between neonatal respiratory distress syndrome (hyaline membrane disease) and cyanotic heart disease (restricted pulmonary blood flow). If full diagnostic facilities not readily available, use cyanosis (evidenced by PO2 <40 mm Hg) and radiographic evidence of restricted pulmonary blood flow as indicators of cyanotic heart disease.
GU Effects
Penile fibrosis, including Peyronie’s disease, reported following intracavernosal administration.
Examine patients (e.g., every 3 months) for any changes in penis and assess therapeutic benefit. Discontinue therapy in any patient who develops penile angulation, cavernosal fibrosis, or Peyronie’s disease during therapy.
Assessment of Patients with Erectile Dysfunction
Thorough medical history and physical examination recommended to diagnose erectile dysfunction, determine potential underlying causes, exclude potentially reversible or treatable causes, identify underlying disorders that might preclude use, and identify appropriate treatment. (See Contraindications under Cautions.)
Examine cardiac fitness of patient prior to treatment initiation, particularly in patients with underlying cardiovascular disease. (See Contraindications under Cautions.)
Sexual Preference
No experience with use in homosexual men or for sexual activities other than vaginal intercourse.
Concomitant Therapy
Safety and efficacy of combination therapy with other treatments for erectile dysfunction not established; combined use not recommended by manufacturer. (See Erectile Dysfunction under Uses.)
Increased propensity for bleeding with intracavernosal use in patients receiving concurrent anticoagulants (e.g., heparin, warfarin). (See Specific Drugs under Interactions.)
Risk of urethral abrasion resulting in minor bleeding or spotting with improper intraurethral use, particularly in patients receiving anticoagulant therapy.
Musculoskeletal Effects
Risk of cortical hyperostosis of long bones associated with prolonged IV or intra-arterial therapy in neonates and infants. Cortical hyperostosis regresses with therapy withdrawal; carefully weigh possible risk of cortical hyperostosis of long bones against potential benefits.
Hematologic Effects
Bleeding reported rarely following IV or intra-arterial infusion; carefully weigh risk to benefit of therapy in neonates with bleeding disorders.
Risk of urethral abrasion resulting in minor bleeding or spotting with improper use of intraurethral suppository.
Risk of hematologic complications (e.g., intracorporeal hematoma, ecchymosis, hemorrhage at the site of injection) with intracavernosal therapy, especially in patients receiving concomitant anticoagulant therapy. (See Specific Drugs under Interactions.) If bleeding continues or recurs after applying pressure to injection site, abstain from intercourse.
Specific Populations
Pregnancy
Category C. Not indicated for use in women. (See Advice to Patients.)
Intraurethral suppository: Embryotoxic in animals; use condom during sexual intercourse with pregnant woman. (See Contraindications under Cautions.)
Lactation
Not indicated in women.
Pediatric Use
Intracavernosal injections or intraurethral suppository not indicated for use in children.
Safety and efficacy of IV or intra-arterial infusion established in infants and neonates.
Geriatric Use
No substantial differences in safety and efficacy relative to younger adults, but decreased sensitivity (e.g., increased dosage requirements) cannot be ruled out.
Common Adverse Effects
IV or intra-arterial infusion: Apnea, fever, seizures, flushing, bradycardia, hypotension, tachycardia.
Intraurethral suppository: Penile or testicular pain, urethral burning, urethral bleeding and/or spotting, minor urethral abrasions.
Intracavernosal injections: Use concomitantly with caution
Intraurethral suppository: Consider risk-benefit ratio with concomitant use
NSAIAs
Safety and efficacy of alprostadil not affected by concomitant use
Pharmacokinetics
Absorption
Bioavailability
Absolute bioavailability about 98% following intracavernosal injection.
Approximately 80% absorbed ≤10 minutes following intraurethral administration.
Onset
Erection usually occurs within 2–25 minutes after intracavernosal injection.
Erection usually occurs within 5–10 minutes after intraurethral administration.
Duration
Erection may persist approximately 1 hour up to several hours following intracavernosal injection.
Erection may persist approximately 30–60 minutes following intraurethral administration.
Special Populations
In patients with hepatic impairment receiving alprostadil IV infusion, increased peak blood concentrations of drug and metabolites compared with healthy individuals.
In patients with renal impairment receiving alprostadil IV infusion, decreased peak blood concentrations of drug and increased peak blood concentrations of metabolites compared with healthy individuals.
Distribution
Extent
Following intraurethral administration, distributed from mucosal cells of urethra into corpus spongiosum, corpus cavernosum, and pelvic venous circulation. Some drug may distribute from corpus spongiosum directly into pelvic venous circulation bypassing corpus cavernosum.
Following intracavernosal administration, no appreciable binding to erythrocytes or WBCs.
Plasma Protein Binding
93%.
Elimination
Metabolism
Following intracavernosal or intraurethral administration, principally metabolized locally in corpus cavernosum or urethra via oxidation and reduction. Portion of drug released into systemic circulation and metabolized by lungs.
Following systemic administration, rapidly and extensively metabolized principally in the lungs via β- and ω-oxidation.
Elimination Route
Following IV administration, excreted principally in urine (88–90%) as metabolites and in feces (10–12%).
Half-life
Intraurethral suppository: 30 seconds to 10 minutes, depending on body compartment measured and physiologic status of individual.
Intracavernosal injection: 9–11 minutes in healthy individuals.
Special Populations
In patients with hepatic or renal impairment receiving alprostadil IV infusion, terminal half-lives of drug and metabolites unaffected.
Stability
Storage
Parenteral
Powder for Injection
edex®: 25°C (may be exposed to 15–30°C). Do not freeze; protect from excessive heat. Use reconstituted solution immediately; discard unused solution.
Caverject® With 20-mcg vials, ≤25°C. Do not freeze; protect from excessive heat. With 40 mcg vials, 2–8°C until dispensed; thereafter ≤25°C for 3 months or expiration date, whichever comes first. Do not freeze; protect from excessive heat. Use reconstituted solutions within 24 hours when stored at ≤25°C; do not refrigerate or freeze.
Caverject® impulse®: 25°C (may be exposed to 15–30°C). Do not freeze; protect from excessive heat. Use reconstituted solutions within 24 hours when stored at ≤25°C; discard unused solution.
Intraurethral Suppository
Refrigerate at 2–8°C; protect from light and excessive heat (temperatures >30°C). Store in unopened foil pouches until use. May be stored at <30°C for ≤14 days prior to use.
Injection Concentrate for Infusion
2–8°C.
Discard unused diluted solutions after 24 hours.
Compatibility
For information on systemic interactions resulting from concomitant use, see Interactions.
In neonates with restricted pulmonary blood flow, increases pulmonary blood flow through combined maintenance of patency of ductus arteriosus and dilation of pulmonary vascular bed. Temporarily increases arterial oxygen partial pressure (PaO2) and oxygen saturation.
In neonates with restricted systemic blood flow, prevents or corrects acidemia and increases cardiac output, systemic BP, femoral pulse volume, and renal blood flow and function (urine production).
In neonates with coarctation of aorta, decreases gradient of descending to ascending aortic BP.
In neonates with interruption of aortic arch, decreases gradient of pulmonary artery to descending aortic BP.
Interacts with specific membrane-bound receptors that stimulate adenylate cyclase and elevates intracellular concentrations of cyclic adenosine-3',5'-monophosphate (AMP), leading to activation of protein kinase and resultant smooth muscle relaxation.
Induces erection by relaxing trabecular smooth muscle and dilating cavernosal arteries and their branches (i.e., the helicine arterioles of the penis).
Increases arterial inflow velocity and venous outflow resistance resulting in penile blood engorgement and erection.
Drug may enhance actions of nonadrenergic, noncholinergic, vasodilatory neurotransmitters (e.g., nitric oxide, neuropeptide Y, calcitonin gene-related peptide, vasoactive intestinal polypeptide).
Advice to Patients
Erectile Dysfunction
Importance of providing patient a copy of manufacturer’s patient information.
Importance of informing clinician of history of syncope prior to treatment initiation with intraurethral suppository.
Importance of understanding proper storage, preparation, and administration techniques, including precautions and proper disposal of used needles, injection devices, syringes and unused reconstituted drug solutions.
Importance of not storing vials or injection devices in checked airline baggage (storage in passenger compartment permitted) or closed automobile. Importance of avoiding freezing or exposure to temperatures >25°C.
Importance of contacting a clinician if needle breaks during penile injection.
Potential for transmission of sexually transmitted diseases or blood-borne diseases and need to use protective measures to guard against such transmission. (See Hematologic Effects under Cautions.)
With intraurethral suppository, importance of using a condom when engaging in sexual intercourse with a pregnant woman. (See Contraindications under Cautions.)
Importance of contacting clinician regularly for assessment of therapeutic benefit, need for possible dosage adjustment, and of potential adverse effects.
Importance of seeking immediate medical attention if erection persists >4 hours. (See Priapism under Cautions.)
Importance of informing clinician of penile pain that develops or intensifies during intracavernosal therapy.
Importance of informing clinician of nodules or hard areas in penis, any sign of infection (e.g., penile erythema, swelling, tenderness) or unusual curvature.
Possible dizziness, hypotension, or syncope with intraurethral suppository; use caution when driving or operating machinery. Importance of lying down and immediately raising legs if light-headed feeling, dizziness, feeling of faintness, or rapid pulse experienced. Importance of informing a clinician if such symptoms persist.
Importance of informing clinician of existing or contemplated concomitant therapy (e.g., agents interfering with blood clotting, antihypertensive agents), including prescription and OTC drugs, as well as any concomitant illnesses (e.g., conditions interfering with blood clotting).
Importance of informing patients of other important precautionary information. (See Cautions.)
Preparations
Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details.
Caverject® impulse® (available as disposable prefilled dual-chambered cartridges with bacteriostatic water for injection diluent with benzyl alcohol 4.45 mcg; needle and alcohol swabs)
Pfizer
edex® (available in cartridges with one compartment of dual-chamber containing diluent [bacteriostatic 0.9% sodium chloride] and with reusable injection device, needles and alcohol swabs)
Schwarz
20 mcg
Caverject® (available as single-dose vials with sterile water for injection diluent with benzyl alcohol 8.4 mcg)
Pfizer
Caverject® impulse® (available as disposable prefilled dual-chambered cartridges with bacteriostatic water for injection diluent with benzyl alcohol 4.45 mcg; needle and alcohol swabs)
Pfizer
edex® (available in cartridges with one compartment of dual-chamber containing diluent [bacteriostatic 0.9% sodium chloride] and with reusable injection device, needles and alcohol swabs)
Schwarz
40 mcg
Caverject® (available as single-dose vials with sterile water for injection diluent with benzyl alcohol 8.4 mcg)
Pfizer
edex® (available in cartridges with one compartment of dual-chamber containing diluent [bacteriostatic 0.9% sodium chloride] and with reusable injection device, needles, and alcohol swabs)
Schwarz
Urogenital
Suppository
125 mcg
Muse® (in a polyethylene glycol vehicle; with applicator)
Vivus
250 mcg
Muse® (in a polyethylene glycol vehicle; with applicator)
Vivus
500 mcg
Muse® (in a polyethylene glycol vehicle; with applicator)
Vivus
1 mg
Muse® (in a polyethylene glycol vehicle; with applicator)
Vivus
Comparative Pricing
This pricing information is subject to change at the sole discretion of DS Pharmacy. This pricing information was updated 09/2009. For the most current and up-to-date pricing information, please visit www.drugstore.com. Actual costs to patients will vary depending on the use of specific retail or mail-order locations and health insurance copays.
† Use is not currently included in the labeling approved by the US Food and Drug Administration.
Remember, keep this and all other medicines out of the reach of children,
never share your medicines with others, and use this medication only for the indication prescribed.
Sign up with Facebook
