U.S. doctors online nowAsk doctors free
Nigeria
A 26-year-old male asked:

Doctor if i take weak erection drug like viagra (sildenafil) how long will it take before it take effect and is there any possible side effects?

1 doctor answer1 doctor weighed in
Dr. Jared Adams
12 years experience
Viagra (sildenafil): Viagra (sildenafil) starts to work in about 30-60 minutes. There is a lot of fake viagra (sildenafil) being sold online so i would recommend buying directly from pfizer at viagra (sildenafil).Com to be safe. The complete list of side effects is printed on the front page of viagra (sildenafil).Com. It is a generally safe drug, but if you have sudden loss of vision or your erection lasts more than 4 hours seek emergency medical advice.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Sep 21, 2013

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.