Indications and early results of sildenafil Viagra in erectile dysfunction Urology ; 54 : — Efficacy, safety and patient acceptance of sildenafil citrate as a treatment for erectile dysfunction J Urol ; : — Hanash KA. Comparative results of goal oriented therapy for erectile dysfunction J Urol ; : — Steers WD et al. Google Scholar. Treatment of intracorporal injection non-responders with sildenafil alone or in combination with polyagent intracorporal injections J Urol ; : 6 — Shabsigh R.
Study — 22 January, pp — Lowentritt BH et al. Sildenafil citrate after radical retropubic prostatectomy J Urol ; : 5 — Article Google Scholar. Clinical safety of oral sildenafil citrate in the treatment of erectile dysfunction Int J Impot Res ; 10 : 69— Porst HJ.
The rationale for prostaglandin E1 in erectile failure: A survey of worldwide experience Urol ; : — Cardiovascular disease risk profiles Am Heart J ; : — An analysis of vasculogenic erectile dysfunction as a predictor of occult cardiac disease: J Urol ; : Kawanishi Y et al.
Erectile dysfunction: is there silent obstructive coronary artery disease? Int J Clin Pract ; 55 : — Use of sildenafil Viagra in patients with cardiovascular disease J Am Coll Cardiol ; 33 : — Download references. Australian Centre for Sexual Health, St.
Luke's Hospital Complex, Sydney, Australia. You can also search for this author in PubMed Google Scholar. Correspondence to C G McMahon. Reprints and Permissions. McMahon, C. High dose sildenafil citrate as a salvage therapy for severe erectile dysfunction.
Int J Impot Res 14, — Download citation. Received : 13 February Accepted : 15 July Published : 19 December Viagra is a relatively safe medication but it is not a candy after all, so it is much safer to use it according to the healthcare recommendations. No matter what dosage of Viagra you are taking, it is desirable to follow a few instructions:.
A doctor may prescribe to take Viagra in such strengths — 25mg, 50mg or mg. The average dose for the first intake of Viagra is 50 mg. The results of clinical trials have shown that this amount of the drug is enough for triggering a normal erection for most men. There is one more recommended approach to the calculation of the individual dose: start with a minimum of 25 mg and then increase until the desired effect happens.
During one day you can take no more than Viagra mg. However, some people can increase the maximum recommended daily dose of mg Sildenafil. That is why some generic versions of Viagra are accessible for sale in higher strengths per 1 pill — mg and mg. Your doctor can give you more information on the safest Viagra dosage for you, including information about factors that can affect your dosage. Viagra comes as tablets that you swallow.
But Viagra may be taken between 30 minutes and 4 hours before you anticipate sexual activity. Viagra tablets may be taken with or without food. Keep in mind that meals high in fat such as a cheeseburger may cause Viagra to take longer than usual to start working. Do not take more than one dose of Viagra per day. Doing this can increase your risk for serious side effects.
For some medications, taking more than the recommended amount may lead to side effects or overdose. Another option is to call the American Association of Poison Control Centers at or use their online tool. If you have severe symptoms, immediately call or your local emergency number, or go to the nearest emergency room. The dosages in this article are typical dosages provided by the drug manufacturer. Always follow the dosage that your doctor prescribes for you.
Besides learning about dosage, you may want other information about Viagra. These additional articles might be helpful:. Disclaimer: Medical News Today has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication.
The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects.
This dosage may be too high for people who have certain medical conditions or take certain medications. Yes, Viagra is typically used as needed for ED. A lower dosage of Viagra is safer for some people. This is typically due to certain factors, such as having specific medical conditions.
These factors include:. If any of the above factors applies to you, talk with your doctor. They may adjust your dosage of Viagra. As a result, drugs stay longer in the body, which can raise the risk of side effects.
The typical starting dosage of Viagra for a year-old would be 25 milligrams mg. For a year-old who has no other medical conditions, the typical starting dosage would be 50 mg. If a dosage works well but causes bothersome side effects, your doctor may suggest a lower dosage. The maximum recommended dosage of Viagra is mg per day. Taking higher doses of Viagra can increase your chances of having severe side effects, such as:. Viagra tablets may be cut in half, crushed, or swallowed whole. You can take Viagra with or without food.
But the drug may not work as quickly if you take it with foods containing a lot of fat, such as fried foods. In this case, Viagra could take up to an hour longer to start working.
If you forget to take Viagra an hour before sex, you can take it as soon as you remember. It starts working to improve erectile function as soon as 30 minutes after you take your dose.
Its effects usually last about 4 hours. If you need help remembering to take your dose of Viagra before sex, try setting an alarm or downloading a reminder app.
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