Also, like Viagra, sildenafil is available through Hims in doses of 25, 50, and 100 mg. You can take it as needed in advance of sexual activity and should not take it more than once per day.

Purpose: The stability of sildenafil citrate 2.5 mg/mL in two extemporaneously prepared oral suspensions stored at 4 and 25 ºC was studied. Methods: Thirty 25-mg tablets of sildenafil citrate ...

It’s available in a 25-, 50-, and 100-milligram (mg) oral tablet. Sildenafil is the generic form of Viagra and is the primary active ingredient found in Revatio and Viagra. Sildenafil works ...