Sildenafil, more commonly recognized by the brand name Viagra, is the among the most widely-used impotence treatments in the world. It is effective in the majority of men whether the cause of impotence is a result of a medical condition, a side effect of medications, or of psychological origin.

Less commonly patients of either gender may buy sildenafil to treat pulmonary hypertension and altitude sickness.

An Easy & Discreet Solution

In short, sildenafil relaxes and widens blood vessels, including those in the penis, which allows for sufficient blood flow to develop and maintain an erection. It does not increase sexual desire and will not produce an erection without sexual arousal. After stimulation stops or ejaculation, blood flow to the penis will decrease and the erection will subside as normal.

For treating impotence sildenafil is available in tablets of 25, 50 or 100 mg. For other conditions, such as pulmonary hypertension, it is possible to buy sildenafil in lower doses of 5 to 20 mg; these doses are typically too small to be effective in impotence.

Most men start on 50 mg. The dose may be raised to 100 mg if 50 is not sufficient, or lowered to 25 mg if side effects are experienced. Men with certain preexisting conditions, such as liver damage, may be started on the lower dose.

Effects are noticeable 30 to 60 minutes after taking a tablet. Effects typically peak about 2 hours after administration and begin to wear off after about 4 hours. Some men find effects last considerably longer, but in most cases effects are completely gone after 5 or 6 hours.

Ideally tablets are taken about an hour prior to anticipated sexual activity. Sildenafil should only be used once every 24 hours. Tablets may be taken with or without food; taking on a full stomach, particularly after a fatty meal, may slow absorption time and delay effects.

Some men find sildenafil doesn't work well the first few times it is used. As long as no side effects are experienced it's worth giving it several tries. If it still doesn't work, speak with a doctor or pharmacist about alternative options--there are many out there.

Side Effects & Other Considerations

In the interest of preventing serious side effects or complications, men planning to buy sildenafil should keep in mind that:

• Sildenafil can cause dangerous interactions with medications containing nitrates; this includes many medications used for heart issues, chest pain, and some recreational drugs.
• It may cause complications in any patient who has had a recent heart attack or stroke, has coronary artery disease, or congestive heart failure.
• Patients with blood cell or bleeding disorders, such as hemophilia, sickle cell anemia, or leukemia, are at greater risk of experiencing serious side effects.
• Patients who have liver or kidney failure should not buy sildenafil without explicit doctor approval.
• Men who have penile implants, scarring, deformities or other penile abnormalities are at greater risk of experiencing certain side effects.
• Sildenafil is for adult men and should not be used by boys who have not yet reached sexual maturity.

When used properly sildenafil is a very safe treatment. The most commonly reported side effects include:

• Headache
• Indigestion
• Stuffy nose
• Mild dizziness
• Feeling flushed, particularly in the face

The above effects typically subside quickly and are not cause for concern unless severe or persistent.

Rarely more serious side effects are experienced which warrant medical attention:

• Vision changes (temporary)
• Prolonged or painful erections

Use of alcohol, marijuana, opioids or other sedative-like drugs may significantly reduce the effectiveness of sildenafil. Stimulants such as amphetamines increase the risk of cardiovascular side effects.

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