The active substance of viagra is sildenafil, the content in 1 tablet is 25-100 mg. Viagra is the first pharmaceutical drug with a significant effect for the treatment of erectile dysfunction. The principle of action of the active substance is based on an increase in the amount of blood entering the penis, which contributes to the appearance of a natural erection. Unlike other drugs, Viagra affects only the natural mechanisms of the appearance of an erection. The effectiveness of Viagra differs significantly from the type of dysfunction, for example, the drug is very effective in vascular erectile dysfunction, and if the patient has pathological venous drainage, the results are much worse.
Since viagra singapore price 2022 is based on hanging blood flow, it is not a means of increasing libido. Indications for the use of the drug: vascular lesions or nerves of the penis. Treatment with viagra does not improve only in the case of severe fibrosis of the cavernous bodies. Before taking the drug, it is recommended to consult with a urologist or a sex therapist. In case of heart disease, consultation with a cardiologist or therapist is mandatory. In case of chronic diseases, it makes sense to consult with an appropriate specialist.
The drug should be taken in an amount of one tablet approximately an hour before sexual activity. The effect of Viagra begins about half an hour after taking it and lasts about 4 hours. It is good to take the drug before meals, in which case the medicine will begin its effect faster. The effect of viagra involves taking only in the case of sexual intercourse, the maximum frequency of taking 1 time per day. The dosage of viagra is usually calculated as follows: a 50 mg dose is prescribed, and then adjusted. It is also possible to start treatment with the smallest dosage, gradually increasing it until the desired effect is achieved.
Viagra is a safe drug: side effects occur rarely, no more than 2.5% of cases. However, there are some drugs that are incompatible with Viagra. These include all nitrates: nitroglycerin, cardiket, olikard and others. Pressure drop can also cause danger. With prolonged use of the drug, no serious consequences have been identified, so viagra can also be taken for long-term treatment of erectile dysfunction.