It is recommended to apply 30-90 minutes before the planned sexual contact. Works for 3-4 hours. Take each dose with 1/2 – 1 glass of water. Can only be taken once a day. The maximum dose for 1 time is 100 mg. The user must abstain from alcohol while taking this medicine. This tablet is usually taken on an empty stomach. A small number of patients may experience short-term blurred vision. This is due to an increase in the outflow of blood from the optic nerve. At risk are people with heart pain, diabetes, high blood pressure, smokers, and people over 50 years of age.