The active ingredient in Viagra, in a dissolving tablet
From $54/mo with a 3-month plan A licensed provider reviews your intake and decides whether it's appropriate for you. Your provider picks your starting dose and adjusts it as you go.
Made by a licensed compounding pharmacy. Compounded medications are not FDA-approved.
100% online visit
Licensed providers in all 50 states
Ships in plain packaging
Message your care team anytime
How getting sildenafil works
Tell us about your health. A short online intake: your history, medications and goals.
A licensed provider reviews it. They decide whether it's right for you and set your dose.
Treatment ships to you. In plain packaging. Track it, and message your care team, from Care.
What it is
Sildenafil is a PDE5 inhibitor that improves blood flow for erections when you're aroused. Taken as needed, about an hour before sex.
How it works in the body
It relaxes blood vessels in the penis so blood flows in more easily during arousal. It doesn't cause an erection on its own.
What to expect
30–60 minutes: Starts working; lasts about 4 hours.
May be a good fit if
Trouble getting or keeping an erection
You prefer taking something only when needed
Probably not for you if
Taking nitrates for chest pain
Recent heart attack or stroke
Very low blood pressure
Doses your provider can prescribe
Sildenafil Citrate
Common side effects
Headache
Flushing
Stuffy nose
Vision tint (rare)
Safety
A licensed provider reviews your intake and decides whether it's appropriate for you.
Made by a licensed compounding pharmacy. Compounded medications are not FDA-approved.
This isn't a full list. Your provider reviews your history and medications before prescribing.
Know it's working
Tadalafil. The active ingredient in Cialis, daily or as needed
Membership with Atlas. See how treatment is moving your labs, wearables and daily habits.
Common questions
Sildenafil or tadalafil?
Sildenafil works for about 4 hours; tadalafil lasts up to 36. Many men try both.