If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately and avoid sexual activity until your doctor tells you otherwise. It is thought that this reduced sales over the Internet and was safer as males could be referred for medical advice if appropriate. Rarely reported side effects include: an erection that will not go away priapism. Other uses for this medicine This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Take sildenafil exactly as directed. If you are taking sildenafil for erectile dysfunction, you are unlikely to miss a dose since this medication is taken as needed, not on a regular dosing schedule.Examples of Viagra’s more commonly reported side effects include: headache. flushing (temporary warmth, redness, or deepening of skin color) stuffy nose. indigestion (upset stomach) mild vision. Calico, plain, checkered, polka – dot, colorful-such familiar and comfortable underwear, unfortunately, rarely distinguished by an attractive appearance. Viagra (sildenafil) drugs also help for men and improve their physical condition and potency, but many do not use them, although they are recommended. Sometimes they can be seen even through. Viagra dosage for erectile dysfunction (ED) is usually milligrams (mg), but those over 65 may start at 25 mg. Your doctor will also need to consider possible drug interactions.