· Compare prescription drug prices and find coupons at more than 70, US pharmacies. Save up to 80% instantly!It is not indicated for children. While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. Here are some key factors to consider when deciding: Pricing: Know how much your monthly supply will cost with shipping and tax. Read our editorial process. For erectile dysfunction, it’s best to take sildenafil on an empty stomach.Compare prices and print coupons for Tadalafil (Cialis) (Generic Cialis) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ Compare Sildenafil head-to-head with other drugs for uses, ratings, cost, side effects and interactions. Compare Sildenafil head-to-head with other drugs for uses, ratings, cost, side effects and interactions. Pricing and Coupons * Prices are without insurance: Quantity: 10 tablet: Dosage: 20 mg: Per Unit * $ Cost * $ View all. Prices vary greatly depending on which medication you’re prescribed. Generic versions cost much less than the brand-name options, and insurance isn’t accepted. Generic Viagra (sildenafil): Starting at $24/month; Generic Cialis (tadalafil): Starting at $39/month; Generic Cialis Daily (tadalafil): Starting at $89/month; Branded Viagra: .ED medications can cause side effects, and it’s crucial to have access to a medical provider if needed. Insurance can help you save even more on consultations and medications. People with heart conditions should never take ED medications without consulting a doctor. Most patients receive a prescription for 50 mg of oral sildenafil, taken as needed approximately 1 hour before sexual activity. Accordingly, caution is necessary for patients already on ritonavir when prescribing sildenafil.