For oral dosage form (tablets): Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Alternatively, the .Push the plunger of the syringe, then insert the tip into the bottle while holding the bottle upright on a flat surface. Adults 65 years of age and older—25 mg as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your dose if needed. Children—Use is not recommended. In fact, many men experience ED at least once in their lives. Overall, Viagra Sildenafil is an excellent treatment for ED, no matter your age.Viagra is approved for this use in males ages 18 years and older. Viagra contains the drug sildenafil. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) . Overdose Ask your doctor Q&A Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription . Studies have shown that men over 70 are can safely take Viagra (Sildenafil). It increases your libido, and helps you get and maintain an erection for longer. Viagra (Sildenafil) fits .Do not take it more than 3 times a day. ED affects young men too as it isn’t an age issue but a body issue. Talk to your doctor if you take too much sildenafil and you’re worried about any of these side effects: headaches. If you are a Mayo Clinic patient, this could include protected health information. It may take longer to work if you take it with food. Do not take it more than once a day. Follow your doctor’s orders or the directions on the label.

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