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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.
L
Desloratadine is an antihistamine that reduces the natural chemical histamine in the body.
Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Labetalol is in a group of drugs called beta-blockers. Beta-blockers affect the heart and
circulation (blood flow through arteries and veins).
Lactulose is a type of sugar. It is broken down in the large intestine into mild acids that
draw water into the colon, which helps soften the stools.
Lamivudine and zidovudine are antiviral medications. They are in a group of human
immunodeficiency virus (HIV) medicines called reverse transcriptase inhibitors. This
medication helps keep the HIV virus from reproducing in the body.
Lamivudine is an antiviral medication that prevents human immunodeficiency virus
(HIV) cells from multiplying in your body.
Lamotrigine is an anti-epileptic medication, also called an anticonvulsant.
Lanreotide is a man-made protein that is similar to a hormone in the body called
somatostatin. Lanreotide lowers many substances in the body such as insulin and glucagon
(involved in regulating blood sugar), growth hormone, and chemicals that affect digestion.
Lansoprazole decreases the amount of acid produced in the stomach.
Lanthanum carbonate is used for reducing phosphate levels in patients with end stage renal
disease. High levels of phosphate can lead to complications with calcium absorption, resulting in
serious medical problems.
Lapatinib is a cancer medication.
Laronidase is used to treat some of the symptoms of a genetic condition called Hurler
syndrome. Hurler syndrome is also called mucopolysaccharidosis
(MYOO-koe-pol-ee-SAK-a-rye-DOE-sis).
Latanoprost reduces pressure in the eye by increasing the amount of fluid that drains from
the eye.
Leflunomide affects the immune system and reduces swelling and inflammation in the
body.
Lenalidomide affects the immune system. It helps promote immune responses to prevent
inflammation in the body.
Lepirudin keeps the platelets in your blood from coagulating (clotting) to prevent
unwanted blood clots that can occur with certain heart or blood vessel conditions.
Letrozole lowers estrogen levels in postmenopausal women, which may slow the growth
of certain types of breast tumors that need estrogen to grow in the body.
Leucovorin is a form of folic acid. Folic acid helps your body produce and maintain new
cells, and also helps prevent changes to DNA that may lead to cancer. Folic acid is present in
many foods such as dried beans, peas, oranges, spinach, and others.
Leuprolide is a man-made form of a hormone that regulates many processes in the body.
Leuprolide overstimulates the body's own production of certain hormones, which causes that
production to shut down temporarily. Leuprolide reduces the amount of testosterone in men or
estrogen in women.
Levalbuterol is a bronchodilator. It works by relaxing muscles in the airways to improve
breathing.
Levamisole is a cancer (antineoplastic) medication. Levamisole interferes with the growth of
cancer cells and slows their growth and spread in the body.
Levetiracetam is an anti-epileptic drug.
Levobetaxolol is in a class of drugs called beta-blockers. Levobetaxolol ophthalmic reduces
pressure inside the eye.
Levobunolol is in a class of drugs called beta-blockers. Levobunolol ophthalmic reduces
pressure inside the eye.
Levocabastine is an antiallergic medication. It inhibits processes in the body that cause
allergic symptoms after exposure to an allergen.
Levocetirizine is an antihistamine that reduces the natural chemical histamine in the body.
Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Levodopa is a medication used to treat Parkinson's disease. Parkinson's disease is associated
with low levels of a chemical called dopamine (doe PA meen) in the brain. Levodopa is turned into
dopamine in the body and therefore increases levels of this chemical.
Levofloxacin is in a group of antibiotics called fluoroquinolones (flor-o-KWIN-o-lones).
Levofloxacin fights bacteria in the body.
Levofloxacin is in a group of antibiotics called fluoroquinolones (flor-o-KWIN-o-lones).
Levofloxacin fights bacteria in the body.
Levonorgestrel is a female hormone that prevents ovulation (the release of an egg from an
ovary). This medication also causes changes in your cervical mucus and uterine lining, making it
harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus.
Levonorgestrel is a form of progesterone, which is a female hormone involved in conception.
Levonorgestrel is used to prevent pregnancy by inhibiting ovulation (the release of an egg from an
ovary) and by causing the cervical mucous to thicken, which makes it harder for sperm to move toward
the uterus.
Levorphanol is in a group of drugs called narcotic pain relievers. It is similar to
morphine.
Levothyroxine is a replacement for a hormone that is normally produced by your thyroid
gland to regulate the body's energy and metabolism. Levothyroxine is given when the thyroid
does not produce enough of this hormone on its own.
Lidocaine and prilocaine topical is a local anesthetic (numbing medication). It works by
blocking nerve signals in your body.
Lidocaine is a local anesthetic (numbing medication). It works by blocking nerve signals
in your body.
Lincomycin is an antibiotic that fights serious infections caused by bacteria.
Lindane is a pediculicide and a scabicide. It affects the nervous system of the parasites.
Linezolid is an antibiotic that fights bacteria in the body.
Liothyronine is a naturally occurring hormone produced by the thyroid. It is important for
normal energy and metabolism. For a variety of reasons, the body may not produce enough of this
hormone on its own. In these cases, liothyronine is taken to replace the body's natural thyroid
hormone.
Lisdexamfetamine is a central nervous system stimulant. It affects chemicals in the brain
and nerves that contribute to hyperactivity and impulse control.
Lisinopril is in a group of drugs called ACE inhibitors. ACE stands for angiotensin
converting enzyme.
Lithium affects the flow of sodium through nerve and muscle cells in the body. Sodium
affects excitation or mania.
Lodoxamide is an antiallergic medication. It inhibits processes in the body that cause allergic
symptoms after exposure to allergy-causing substances.
Lomefloxacin is an antibiotic in a class of drugs called fluoroquinolones. It fights bacteria in
the body.
Lomustine is a cancer (antineoplastic) medication. Lomustine interferes with the growth of
cancer cells and slows their growth and spread in the body.
Loperamide slows the rhythm of digestion so that the small intestines have more time to
absorb fluid and nutrients from the foods you eat.
Lopinavir and ritonavir is a combination of two antiviral medications in a group of HIV
medicines called protease (PRO-tee-ayz) inhibitors. This medication prevents human
immunodeficiency virus (HIV) cells from multiplying in your body.
Loracarbef is an antibiotic that fights bacteria in your body.
Loratadine is an antihistamine that reduces the natural chemical histamine in the body.
Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Lorazepam is in a group of drugs called benzodiazepines (ben-zoe-dye-AZE-eh-peens).
Lorazepam affects chemicals in the brain that may become unbalanced and cause anxiety.
Losartan is in a group of drugs called angiotensin II receptor antagonists. Losartan keeps
blood vessels from narrowing, which lowers blood pressure and improves blood flow.
Loteprednol is in a class of drugs called corticosteroids. Loteprednol inhibits processes in the
body that cause inflammation (swelling). Tobramycin is an antibiotic.
Loteprednol is in a group of drugs called corticosteroids. It prevents the release of
substances in the body that cause inflammation.
Lovastatin is a cholesterol-lowering medication that blocks the production of cholesterol
(a type of fat) in the body.
Lovastatin is a cholesterol-lowering medication that blocks the production of cholesterol
(a type of fat) in the body.
Loxapine is an antipsychotic medication. It works by changing the actions of chemicals in
your brain.
Lubiprostone increases the secretion of fluid in your intestines to help make it easier to
pass stools (bowel movements).
Lutropin alfa is a hormone used to support Follicle Stimulating Hormone (FSH) therapy.
Lysine is an essential amino acid. Essential means that it is not produced by the body and
therefore it must be taken in either by diet or by taking supplements. Lysine is found in foods
such as yogurt, fish, cheese, brewer's yeast, wheat germ, pork, and other meats.
Naproxen is in a group of drugs called NSAIDs (nonsteroidal anti-inflammatory drugs).
It works by reducing substances in the body that cause inflammation, pain, and fever.
The use of dietary or herbal supplements in cultural and traditional settings may differ
from what is accepted in Western medicine. When considering the use of any dietary or herbal
supplement, it is best to talk with your medical doctor. You may also talk with a naturopathic
doctor or other practitioner trained in the use of herbal medicines.
The use of lavender 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.
The use of licorice 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.
Levonorgestrel is a female hormone that prevents ovulation (the release of an egg from an
ovary). This medication also causes changes in your cervical mucus and uterine lining, making it
harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus.
Lorazepam is in a group of drugs called benzodiazepines (ben-zoe-dye-AZE-eh-peens).
Lorazepam affects chemicals in the brain that may become unbalanced and cause anxiety.
Loperamide slows the rhythm of digestion so that the small intestines have more time to
absorb fluid and nutrients from the foods you eat.
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