The price for ED medications ... with your prescriber to find the dosage that’s right for you. Sildenafil is also available through Rex MD for $2 per 20-mg dose or $6 per 50- or 100-mg dose.
Dosage and cost: Sildenafil is available through Roman by prescription in 25-, 50-, or 100-milligram (mg) pills, ranging in price from $4 to $10 per dose. Brand-name Viagra is also available ...