They have the same benefits and risks as their brand-name counterparts. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication. Medical consultations were also taken into consideration, as PDE5 inhibitors require a valid prescription from a licensed medical provider. Some men prefer Viagra over the Sildenafil generic. There are many safe, reliable online services offering ED prescriptions. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. Neither Sildenafil nor drugs in the same class are appropriate or safe for women.Generic Viagra (sildenafil): $4 per 25 mg pill, $6 per 50 mg pill, $10 per mg pill; Branded Viagra: $90 per 25 mg, 50 mg, or mg pill; Generic Cialis (tadalafil): $11 . Both Viagra and sildenafil are available in mg, mg, and mg doses. REX MD currently has a out of 5-star rating on Trustpilot as of November About 84% of . Sildenafil Switch to brand medication info_outlined Used for Erectile Dysfunction MORE expand_more Check your prescription Prescription mg sildenafil (30 tablets) edit .