Taking sildenafil alone will not cause an erection. Other uses for this medicine This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. The most common side effects of VIAGRA: headache; flushing; upset stomach; abnormal vision, such as changes in color vision such as having a blue color tinge and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash. About sildenafil Viagra Sildenafil is a medicine used to treat erection problems erectile dysfunction. If you are taking sildenafil for PAH, take the missed dose as soon as you remember it.FOOD LION PHARMACY. AS LOW AS $ Use this coupon to get this price at any FOOD LION PHARMACY location. Expand to see all locations within your area. Get . This means that 4 hours after you take a dose, your body has cleared half of the dose. In most cases, it takes about 5 half-lives for your body to completely remove a drug from your system. So. 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.