Imdur is a nitrate which is used to prevent angina attacks (chest pain) by relaxing and widening blood vessels.

Imitrex (sumatriptan) is a headache medicine that narrows blood vessels around the brain.

Imodium belongs to the family of medications called antidiarrheals. It is used to treat short bouts of diarrhea and chronic diarrhea and to reduce the amount of stool.

Imuran is immunosuppressant. It is used to treat symptoms of rheumatoid arthritis, to prevent your body from rejecting a transplanted kidney or other transplanted organs.

Inderal is prescribed for treatment of different conditions related to heart and blood vessels.

Indinavir is used to treat diseases caused by HIV-1 in adult patients who have not received antiretroviral therapy before or who have received antiretroviral drugs and who have contraindications or resistance to drugs - reverse transcriptas

Indocin is in a group anti-inflammatory drugs that is used to treat pain or inflammation caused by many conditions.

Isoptin is used for the treatment of high blood pressure, hypertrophic cardiomyopathy, to prevent chest pain and to control heart rate.

Isoptin Sr is used for the treatment of high blood pressure, certain abnormal heart rhythms, and angina (chest pain).

Isordil prevents and relieves chest pain (angina) due to coronary artery disease.