Vitara contains vardenafil, a medication used to treat erectile dysfunction in adult men. It belongs to the class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. Vitara helps men achieve and maintain an erection by improving blood flow to the penis during sexual arousal. It is commonly prescribed when a man finds it difficult to achieve satisfactory sexual performance due to physical or psychological causes.

Mechanism of Action
Vardenafil works by blocking the action of the PDE5 enzyme in the smooth muscle of the blood vessels in the penis. During sexual stimulation, nitric oxide is released in the erectile tissue, which increases the level of a chemical called cyclic guanosine monophosphate (cGMP). This chemical helps relax the blood vessels, allowing more blood to flow into the penis, leading to an erection. By inhibiting PDE5, vardenafil helps maintain higher levels of cGMP, supporting a firmer and longer-lasting erection.

Uses
Vitara is used to treat erectile dysfunction, a condition where a man has trouble getting or keeping an erection suitable for sexual activity. It is taken orally, usually about thirty to sixty minutes before planned sexual activity, and requires sexual arousal to be effective. It does not increase libido and is not intended for use by women or children.

Adverse Effects
Most men tolerate vardenafil well, but it can occasionally cause side effects.
Common effects include headache, flushing, nasal congestion, and dizziness. Some users may also report upset stomach or back pain.
Less commonly, it may cause visual disturbances, such as a blue tint to vision or blurred sight.
In rare cases, serious effects like a prolonged erection, sudden vision loss, or hearing issues can occur. People with heart conditions or those taking nitrate medications should not use Vitara, as the combination can cause dangerous drops in blood pressure.

A healthcare provider should be consulted to ensure Vitara is safe and appropriate based on individual health status and other medications being taken.