Sildenafil Citrate is prescribed to treat erectile dysfunction (ED).If you take any medicines containing nitrates in them (like nitroglycerin for chest pain)'every day or even once in a while'you should NOT take Sildenafil Citrate.Discuss your general health status with your doctor. If you experience chest pain, nausea, or any other discomforts during sex, seek immediate medical help.

The most common side effects of Sildenafil Citrate are headache, facial flushing, and upset stomach. Less commonly, bluish vision, blurred vision, or sensitivity to light may briefly occur.

If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including Sildenafil Citrate, and call a doctor right away for the medical help. Although erections lasting for more than 4 hours may occur rarely with all ED treatments in this drug class, to avoid long-term injuries, it is important to seek immediate medical help.

If you are older than age 65, or have serious liver or kidney problems, your doctor may start you at the lowest dose (25 mg) of Sildenafil Citrate. If you are taking protease inhibitors, such as for the treatment of HIV, your doctor may recommend a 25-mg dose and may limit you to a maximum single dose of 25 mg of Sildenafil Citrate in a 48-hour period.

If you are having high blood pressure for which you take medicines called alpha-blockers, your doctor may start you on a lower dose of Sildenafil Citrate.
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