The medication is available in tablet form and is taken by mouth. Sildenafil is a prescription medication for erectile dysfunction. Sildenafil helps to improve erections in men who have difficulty getting or keeping an erection. Sildenafil is a prescription drug that can be used to treat erectile dysfunction. Sildenafil is manufactured by Pfizer, and is sold under the brand name Viagra. Sildenafil can be taken in tablet form, and is taken 30 minutes before sexual activity. The tablets should not be taken more than once a day.Sildenafil helps to improve erections in men who have difficulty getting or keeping an erection.
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