Ypomin 5 Tablet ER is used to treat high blood pressure by relaxing blood vessels, allowing blood to flow more easily. It is also used to treat symptoms of an enlarged prostate gland (benign prostatic hyperplasia) in men by relaxing the muscles in the prostate and bladder neck, making it easier to urinate. Controlling high blood pressure (hypertension) lowers the risk of having a heart attack or stroke. This medicine may also be used to treat Raynaud's disease. It may be prescribed alone or in combination with other medicines. Take it regularly and take it in the dose and duration prescribed by your doctor. High blood pressure does not usually have symptoms, so keep taking it even if you feel well.The most common side effects of this medicine include weakness, dizziness, headache, nausea, and unusual beating of the heart (palpitation). Most side effects disappear when you get used to the medicine. It may also cause your blood pressure to go too low, especially when you first start taking this medicine. Your doctor may be able to help with ways of preventing or reducing these side effects.If you are pregnant, thinking about becoming pregnant, or breastfeeding, ask your doctor before using this medicine. Also, inform your doctor if you have a history of heart failure, liver disease, or kidney disease, and if you are having eye surgery for a cataract. Your blood pressure will need to be checked regularly while using this medicine.