Data shared with Viatris will be aggregated and de-identified; it will be combined with data related to other Savings Offer redemptions and will not identify you Viatris reserves the right to rescind, revoke, or amend this Savings Offer without notice No membership fees. You can take this medicine with or without food 30 minutes before sex, depending on the dose. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. These small differences affect the way each medication works, such as how quickly it takes effect and wears off, and the possible side effects.Learn more about what VIAGRA® (sildenafil citrate), a prescription treatment for ED. Tell your healthcare provider about all the medicines you take, including prescription and . Typical dosing for Sildenafil (Viagra) The typical dose is to take 50 mg of sildenafil (Viagra) by mouth, about 1 hour before sex, as needed. The maximum . Oral medicines for ED usually work well and cause few side effects. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil .