Viagra is a medical product for the treatment of male impotence and symptoms of erectile dysfunction. Peculiarities of Viagra are that this drug helps to restore erection even at the severest forms of erectile dysfunction caused by different diseases or psychic disorders. The pharmacological action of Viagra does not provide a healing effect but helps to gain erection for a long time in order to have a complete sexual intercourse.

Pharmacodynamics

Viagra is a selective inhibitor of cyclic guanosine monophosphate. The main pharmacological action of the drug is based on the increase of the blood flow into penis. The pharmacological effect of Viagra appears only in response to the sexual arousal of a man. Nitric oxide is released during aroused condition and this provides a relaxing effect on the smooth muscular system of the penis. An active component of Viagra, Sildenafil, increases the relaxing effect of nitric oxide due to which the cavernous bodies of the penis are dilated and filled with the blood resulting in erection.

Viagra does not provide a pharmacological effect without sexual arousal because Sildenafil is not an aphrodisiac and is not able to cause sexual desire.

Use of Viagra

Viagra provides the maximal effect only in case of the correct usage. Before taking Viagra it is recommended to contact a health care professional and discuss all conditions of Viagra use. If you have a diagnosis and can take Viagra, a man is prescribed a prescription of Viagra and a course of the treatment.

To achieve a better result and quickly improve a quality of erection it is recommended to take a blue pill of Viagra on an empty stomach. Taking Viagra on an empty stomach the active components are quickly dissolved and get into the blood, and it means that the action of the drug will start faster. If you take Viagra on a full stomach, a digestion of the drug occurs longer and it means that the effect of Viagra will start later.

The recommended dosage of Viagra is one pill of 50 mg 30-60 minutes before sexual intercourse. If the dosage of Viagra of 50 mg causes slight side effects, it is necessary to reduce the dosage up to 25 mg of Viagra.

Recommendations for the use of Viagra

- Viagra does not cause addiction so that this drug can be taken for a long time

- The side effects of Viagra appear in case of the overdose or incorrect use of the drug, and therefore using Viagra according to a doctor's prescription, you will have a high safety of the treatment

- It is not recommended to take Viagra at a wide range of the chronic diseases of heart, liver, kidney, and eyes.

- Viagra pills may be taken no more than once a day.

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