The main component of Kamagra is sildenafil citrate. Sildenafil works by relaxing muscles and increasing blood flow to particular areas of the body. Sildenafil is a prescription drug that should be used with caution in patients over 60 years of old, suffering from certain disorders or taking other prescription medications.
Sildenafil under the name Viagra and Kamagra is used to treat erectile dysfunction in men. The brand of sildenafil – Revatio is indicated to treat pulmonary arterial hypertension and improve exercise capacity in men and women.
When a person is sexually excited, nitric oxide in penis is produced and released continuously. Nitric oxide allows natural production of eGMP, which is responsible for erection. The process of erection affects the inflow and removal of blood from the penis. When natural process of erection is impossible due to certain circumstances, drugs for ED can help.
Sildenafil citrate reduces the pressure of blood by inhibiting phosphodiesteras-5. Phosphodiesteras-5 helps to destroy eGMP. Sildenafil citrate is prescribed to treat mild and severe impotence in men.
Sildenafil is absorbed approximately within an hour (45 minutes to 90 minutes). The absorption process may be interfered with a heavy meal taken together with a drug.
Sildenafil is excreted by the liver and kidneys. The drug should be taken only by the person for whom it was prescribed.