Sildenafil citrate is the medication of choice for people suffering from erectile dysfunction. It is available in different brands such as Filagra, Viagra, Kamagara, and more. It also comes in different preparations. This medication is prescribed by a healthcare provider, although some people are able to purchase Filagra online without prescription.


How it works?

The exact mechanism of action of sildenafil citrate is not yet fully understood but it is thought to work by preventing the enzyme phosphodiesterase type 5 from working in the body.

Penile erection results from a cascade of physiologic events ultimately leading to engorgement of the penis with blood. Normally, sexual stimulation results in the production and release of nitric oxide (NO) in the penis. Nitrogen oxide then causes the production of cGMP – which is the primary compound that regulates penile erection.

Sildenafil citrate inhibits the action of phophodiesterase-5 (PDE5) which causes the depletion of cGMP. This medication allows cGMP to persist longer and accumulate; and also result in more prolonged erections.

Sildenafil medications are to be taken only by people with prescription and for its intended purpose only. It should not be taken if you do not suffer from erectile dysfunction.


What to know before taking this medication?

This medication may not be suitable for people suffering from underlying medical conditions. Some people may be advised to be extra cautious when taking this medication. Be sure to inform your health care provider if you have conditions such as: deformity and/or injury of your penis; bleeding or stomach ulcer; vision problems; sickle-cell disease, heart problems, liver or kidney diseases; previous stroke or heart attack; blood pressure problems; and bone marrow cancer/leukemia.

Also inform your health care provider, if you are taking other medications. This includes over-the-counter, prescription and herbal medicines. It is important to tell your doctor if you are taking recreational drugs such as ‘poppers’ or nitrite. If you have allergic reaction to sildenafil, your doctor may recommend other medications instead.


How to take sildenafil citrate?

Follow your health care provider’s instruction when taking this medication. Read the manufacturer’s printed information leaflet. You will find here the common side effects of the mediation. Be familiar with these side effects and adverse reactions. Report to your doctor if side-effects intensify or fail to subside. If you experience chest pain or a sudden loss of vision, contact your health care provider or seek emergency medical assistant immediately.

Usually, sildenafil citrate is taken one hour before planned intercourse. It can be taken with or without food. Never take multiple doses of sildenafil. Usually, the recommended maximum dose is one per day. Check with your doctor if you do not find the medication effective. You may need to get an adjustment in your dosage.