Do not mix the liquid with other medications or add anything to flavor the medication. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. If you have certain health conditions or are taking certain medications, your doctor may tell you to take sildenafil less often. Some chronic conditions, such as diabetes or multiple sclerosis, can change the sexual-response cycle — causing changes in arousal or orgasmic response. Over time, mental health troubles can impact biological problems and vice versa. Most online providers require a picture of a valid ID, a selfie showing your face, and a recent blood pressure reading taken with a home blood pressure monitor or by a medical provider.Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in is also used to treat pulmonary arterial hypertension, a serious heart and lung drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but .  · The FDA has approved a daily pill called flibanserin (Addyi) — originally developed as an antidepressant — as a treatment for low sexual desire in premenopausal women. Addyi may boost sex drive in women with low sexual desire who find the experience distressing. Potentially serious side effects include low blood pressure, dizziness and.  · You’ll typically take Viagra about 1 hour before sex. You can take the drug 30 minutes to 4 hours before you anticipate sexual activity. Based on how well you respond to this dosage and any side.