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Drugs A to Z
Select any letter to display the medications available then choose one to learn more about the side effects, dosing, interactions and the most important information about its use.
T
Diphtheria, tetanus, and pertussis are serious diseases caused by bacteria.
Tacrine improves the function of nerve cells in the brain. It works by preventing the
breakdown of a chemical called acetylcholine (ah see til KO leen). People with dementia usually
have lower levels of this chemical, which is important for the processes of memory, thinking, and
reasoning.
Tacrolimus is an immunosuppressant. It works by decreasing your body's immune system
to help slow down the growth of atopic dermatitis (eczema) on your skin.
Tacrolimus lowers your body's immune system. The immune system helps your body
fight infections. The immune system can also fight or "reject" a transplanted organ such as a
liver or kidney. This is because the immune system treats the new organ as an invader.
Tadalafil relaxes muscles and increases blood flow to particular areas of the body.
Tamoxifen blocks the actions of estrogen, a female hormone. Certain types of breast
cancer require estrogen to grow.
Tamsulosin is in a group of drugs called alpha-adrenergic (AL-fa ad-ren-ER-jik) blockers.
Tamsulosin relaxes your veins and arteries so that blood can more easily pass through them. It
also relaxes the muscles in the prostate and bladder neck, making it easier to urinate.
Tazarotene is a compound similar to vitamin A. It helps the skin to renew itself more quickly
and may improve the appearance and texture of skin.
Tegaserod was withdrawn from the U.S. market on March 30, 2007. This
medication may still be used in limited emergency situations.
Telbivudine is an antiviral medication. It works by preventing viral cells from
multiplying in the body and infecting new liver cells.
Telithromycin is in a group of drugs called antibiotics. Telithromycin helps the body fight
infection that is caused by bacteria.
Telmisartan is in a group of drugs called angiotensin II receptor antagonists. Telmisartan
keeps blood vessels from narrowing, which lowers blood pressure and improves blood flow.
Temazepam is in a group of drugs called benzodiazepines (ben-zoe-dye-AZE-eh-peens).
Temazepam affects chemicals in the brain that may become unbalanced and cause sleep
problems (insomnia).
Temozolomide interferes with the development of cancer cells, slowing their growth and
spread in the body.
Temsirolimus is a cancer medication. It slows the growth and spread of cancer cells in
the body.
Teniposide is a cancer (antineoplastic) medication. Teniposide interferes with the growth of
cancer cells and slows their growth and spread in the body.
Tenofovir is an antiviral medication that prevents human immunodeficiency virus (HIV)
cells from multiplying in your body.
Terazosin is in a group of drugs called alpha-adrenergic blockers. Terazosin causes the
blood vessels (veins and arteries) to relax and expand, improving blood flow. Terazosin also
relaxes muscles in the prostate and bladder neck, making it easier to urinate.
Terbinafine is an antifungal antibiotic.
Terbinafine topical is an antifungal medication. Terbinafine topical prevents fungus from growing
on the skin.
Terbutaline is a bronchodilator. It works by relaxing muscles in the airways to improve
breathing.
Terbutaline is a bronchodilator. Terbutaline works by relaxing muscles in the airways to
improve breathing.
Terconazole is an antifungal medication. It prevents fungus from growing.
Terfenadine was withdrawn from the U.S. market in 1998.
Teriparatide is a man-made form of a hormone called parathyroid that exists naturally in
the body. Teriparatide increases bone density and increases bone strength to help prevent
fractures.
Testolactone blocks the production of the hormone estrogen. Certain types of breast cancer
require estrogen to grow.
Testosterone is a naturally occurring "male" sex hormone necessary for many processes in the
body.
Testosterone is a naturally occurring male hormone necessary for many processes in the
body.
Testosterone is a naturally occurring sex hormone that is produced in a man's testicles.
Small amounts of testosterone are also produced in a woman's ovaries and adrenal system.
Tetanus and diphtheria are serious diseases caused by bacteria.
Tetanus is a serious disease caused by bacteria. Tetanus toxoid vaccine exposes the individual
to a small amount of the bacteria (or to a protein from the bacteria) causing the body to develop
immunity to the disease.
Tetracaine is a local anesthetic (numbing medication). It works by blocking nerve signals
in your body.
Tetracycline is an antibiotic that fights bacteria in the body.
Tetracycline is used topically to treat bacterial infections such as acne.
Tetrahydrozoline is a decongestant that shrinks blood vessels in the nasal passages.
Dilated blood vessels can cause nasal congestion (stuffy nose).
Tetrahydrozoline ophthalmic causes constriction of blood vessels in the eyes. It also
decreases itching and irritation of the eyes.
Tetrahydrozoline ophthalmic narrows the blood vessels (veins and arteries) in your eyes.
Thalidomide affects the immune system. It helps promote immune responses to prevent
inflammation in the body.
The use of tea tree topical in cultural and traditional settings may differ from concepts accepted
by current Western medicine. When considering the use of herbal supplements, consultation with a
primary health care professional is advisable. Additionally, consultation with a practitioner trained in the
uses of herbal/health supplements may be beneficial, and coordination of treatment among all health
care providers involved may be advantageous.
Theophylline is a bronchodilator. It works by relaxing muscles in the lungs and chest, and
makes the lungs less sensitive to allergens and other causes of bronchospasm.
Thiabendazole is an "antihelmintic," or anti-worm, medication. It prevents worms from growing
or multiplying in the body.
Thiamine is vitamin B1. Vitamins are naturally occurring substances necessary for many
processes in the body. Thiamine is important in the breakdown of carbohydrates (sugars) in the
foods we eat into products needed by the body.
Thiethylperazine is in a class of drugs called phenothiazines.
Thioguanine is a cancer (antineoplastic) medication. Thioguanine interferes with the growth
of cancer cells and slows their growth and spread in the body.
Thioridazine is in a class of drugs called phenothiazines. It works by changing the actions of
chemicals in the brain.
Thiotepa is a cancer (antineoplastic) medication. Thiotepa interferes with the growth of cancer
cells and slows their growth and spread in the body.
Thiothixene is an antipsychotic medication. It works by changing the actions of chemicals in
your brain.
Thyroid hormones are produced naturally in the body by the thyroid gland. They are important
for maintaining normal energy and metabolism.
Tiagabine is an anti-epileptic medication, also called an anticonvulsant. It affects
chemical impulses in the brain that cause seizures.
Ticarcillin is an antibiotic in a group of drugs called penicillins. Ticarcillin fights bacteria
in the body.
Ticarcillin is an antibiotic in a group of drugs called penicillins. Ticarcillin fights bacteria
in the body.
Ticlopidine prevents substances in the blood, called platelets, from clustering. This helps to
prevent blood clots from forming.
Tigecycline is a tetracycline-like antibiotic. It fights bacteria in the body.
Tiludronate is in the group of medicines called bisphosphonates (bis FOS fo nayts). It
alters the cycle of bone formation and breakdown in the body. Tiludronate slows bone loss while
increasing bone mass, which may prevent bone fractures.
Timolol is in a group of drugs called beta-blockers. Beta-blockers affect the heart and
circulation (blood flow through arteries and veins).
Timolol ophthalmic (for the eyes) is a beta-blocker that also reduces pressure inside the
eye.
Tinidazole is an antibiotic that fights bacteria in the body.
Tinzaparin is a blood thinner (anticoagulant) that prevents blood clots from forming in the
body.
Tioconazole is an antifungal medication. It prevents fungus from growing.
Tiotropium inhalation is used to prevent bronchospasm (narrowing of the airways in the
lungs) in people with bronchitis, emphysema, or COPD (chronic obstructive pulmonary disease).
Tipranavir is an antiviral medication in a group of HIV medicines called protease
(PRO-tee-ayz) inhibitors. Tipranavir prevents human immunodeficiency virus (HIV) cells from
multiplying in your body.
Tirofiban keeps the platelets in your blood from coagulating (clotting) to prevent
unwanted blood clots that can occur with certain heart or blood vessel conditions.
Tizanidine is a short-acting muscle relaxer. It works by blocking nerve impulses (pain
sensations) that are sent to your brain.
Tobramycin is an antibiotic. It fights bacteria in the body.
Tobramycin is an antibiotic. It is used to treat bacterial infections.
Tobramycin is in a group of antibiotics called aminoglycosides
(ah-meen-oh-GLY-ko-sides). Tobramycin fights infections that are caused by bacteria.
Tobramycin ophthalmic is an antibiotic.
Tocainide affects the way that your heart beats.
Tolazamide is an oral diabetes medicine that helps control blood sugar levels. This
medication helps your body respond better to insulin produced by your pancreas.
Tolbutamide is in a class of drugs called sulfonylureas. It is used to help control blood sugar
levels.
Tolcapone prevents the breakdown of a chemical in your brain called dopamine (DO pa
meen). It also helps other medicines work better in raising the levels of dopamine in your body.
Low levels of dopamine are associated with Parkinson's disease.
Tolmetin is a nonsteroidal anti-inflammatory drug (NSAID). It works by reducing
hormones that cause inflammation and pain in the body.
Tolnaftate topical is an antifungal medication. Tolnaftate topical prevents fungus from growing
on the skin.
Tolterodine reduces spasms of the bladder muscles.
Topiramate is a seizure medication, also called an anticonvulsant.
Topotecan is a cancer medication that interferes with the growth and spread of cancer
cells in the body.
Toremifene blocks estrogen from reaching cancer cells. Certain types of breast cancer require
estrogen to grow.
Torsemide is a loop diuretic (water pill) that prevents your body from absorbing too much
salt, allowing the salt to instead be passed in your urine.
Tositumomab is a monoclonal antibody that is linked with radioactive iodine I-131.
Monoclonal antibodies are made to target and destroy only certain cells in the body. This may
help to protect healthy cells from damage.
Tramadol is a narcotic-like pain reliever.
Trandolapril is in a group of drugs called ACE inhibitors. ACE stands for angiotensin
converting enzyme.
Trandolapril is in a group of drugs called ACE inhibitors. ACE stands for angiotensin
converting enzyme.
Tranexamic acid is a man-made form of an amino acid (protein) called lysine.
Tranexamic acid prevents enzymes in the body from breaking down blood clots.
Tranylcypromine is a monoamine oxidase inhibitor (MAOI) that works by increasing the
levels of certain chemicals in the brain.
Trastuzumab is a cancer medication. It interferes with the growth of cancer cells and
slows their growth and spread in your body.
Travoprost ophthalmic (for the eye) reduces pressure in the eye by increasing the amount
of fluid that drains from the eye.
Trazodone is an antidepressant medication. It affects chemicals in the brain that may
become unbalanced and cause depression
Treprostinil dilates (or widens) the arteries and decrease the amount of blood clotting
platelets in your body. These effects lower blood pressure in the pulmonary artery that leads from
the heart to the lungs.
Tretinoin is a cancer medication that interferes with the growth of cancer cells and slows
their growth and spread in the body.
Tretinoin is a topical (applied to the skin) form of vitamin A that helps the skin renew
itself.
Triamcinolone injection is a steroid. It prevents the release of substances in the body that
cause inflammation.
Triamcinolone is a steroid. It prevents the release of substances in the body that cause
inflammation.
Triamcinolone is a steroid. It prevents the release of substances in the body that cause
inflammation.
Triamcinolone is a topical steroid. It reduces the actions of chemicals in the body that
cause inflammation, redness, and swelling.
Triamcinolone is in a class of drugs called steroids. Triamcinolone prevents the release of
substances in the body that cause inflammation.
Triamterene is a potassium-sparing diuretic (water pill) that prevents your body from
absorbing too much salt and keeps your potassium levels from getting too low.
Triazolam is in a group of drugs called benzodiazepines (ben-zoe-dye-AZE-eh-peens).
Triazolam affects chemicals in the brain that may become unbalanced and cause sleep problems
(insomnia).
Trientine is a chelating (KEE-late-ing) agent. A chelating agent is capable of removing a
heavy metal, such as lead, mercury, or copper, from the blood.
Triethanolamine polypeptide oleate is an emulsion that breaks down natural oils.
Trifluoperazine is in a class of drugs called phenothiazines. It works by changing the actions of
chemicals in the brain.
Trifluridine ophthalmic is an antiviral medication. It fights eye infections that are caused
by certain viruses.
Trihexyphenidyl alters unusual nerve impulses and relaxes stiff muscles.
Trimethadione is a seizure medication. The exact way that it works is unknown.
Trimethobenzamide affects the areas of the brain that stimulate nausea and vomiting.
Trimethoprim is an antibiotic that fights bacteria in the body.
Trimipramine is in a group of drugs called tricyclic antidepressants. Trimipramine affects
chemicals in the brain that may become unbalanced.
Tripelennamine is an antihistamine. Tripelennamine blocks the effects of the naturally occurring
chemical histamine in the body.
Triple sulfa is an antibacterial medication. It fights bacteria in the body.
Triprolidine is an antihistamine that reduces the natural chemical histamine in the body.
Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Triprolidine is an antihistamine that reduces the natural chemical histamine in the body.
Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Triptorelin reduces the amount of testosterone produced in the body.
Troglitazone has been withdrawn from the U.S. market.
Troleandomycin is in a class of drugs called macrolide antibiotics. It fights bacteria in the body.
Tromethamine affects the balance of water and electrolytes in the body.
Tropicamide ophthalmic causes muscles in the eye to become relaxed. This dilates
(widens) the pupil so that it does not contract (narrow) when your doctor shines an examination
light into your eye.
Trospium relieves spasms of the bladder.
Trovafloxacin has been withdrawn from the U.S. market.
Terbutaline is a bronchodilator. It works by relaxing muscles in the airways to improve
breathing.
Testosterone is a naturally occurring male hormone necessary for many processes in the
body.
Tetanus and diphtheria are serious diseases caused by bacteria.
Tobramycin is an antibiotic. It fights bacteria in the body.
Triamcinolone injection is a steroid. It prevents the release of substances in the body that
cause inflammation.
Triamcinolone is a steroid. It prevents the release of substances in the body that cause
inflammation.
Triamcinolone is in a class of drugs called steroids. Triamcinolone prevents the release of
substances in the body that cause inflammation.
Testosterone is a naturally occurring "male" sex hormone necessary for many processes in the
body.
Tioconazole is an antifungal medication. It prevents fungus from growing.
Triamcinolone injection is a steroid. It prevents the release of substances in the body that
cause inflammation.
Triamcinolone is a steroid. It prevents the release of substances in the body that cause
inflammation.
Triamcinolone is a steroid. It prevents the release of substances in the body that cause
inflammation.
Triamcinolone is in a class of drugs called steroids. Triamcinolone prevents the release of
substances in the body that cause inflammation.
Triamcinolone injection is a steroid. It prevents the release of substances in the body that
cause inflammation.
N/A
N/A
Triamcinolone is a topical steroid. It reduces the actions of chemicals in the body that
cause inflammation, redness, and swelling.
Triptorelin reduces the amount of testosterone produced in the body.
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