Who should not take viagra



Initially viagra was developed to treat heart disease and its effects on male potency was accidentally discovered during testing medicines. Despite the primary purpose of the tablets, their very careful need to take people with angina, heart failure and cerebrovascular accidents. It is especially important to watch for symptoms when taking viagra: if there is pain in the heart, problems with memory and mental performance, you should immediately consult a doctor.

After taking the drug may experience a brief but dangerous blindness with prevalence of blue colors.


Also viagra to be very careful to apply to men who have suffered stroke, heart attack or priapism. It is not recommended and drivers of various vehicles, as well as those who take drugs-nitrates for the treatment of heart disease. Healthy man, who took viagra, most likely, will not feel any effect, because the drug is intended for occasional or long-term treatment of erectile dysfunction.

Dangerous side effects and possible harm of viagra



The most common side effects associated with this drug, represent headache, rapid heartbeat, redness of neck and face, various digestive disorders and redness of the nasal mucosa. Most often, these symptoms are mild and pass quickly without requiring withdrawal of the drug. The incidence of side effects is directly related to individual sensitivity, dose and food intake before the use of viagra.

To reduce the likelihood of side effects, it is advisable to take viagra on a full stomach, though it is slightly less effective medication.


Also after taking the drug, men can be noted aching in the perineum, laying the ears, pain in the chest and abdomen, weakness, sensitivity to light, swelling, slight dizziness, slight nausea. In addition, viagra may cause decrease in arterial blood pressure. The dosage of the drug must appoint only your doctor – otherwise you can not get an erection, and problems with health. Never combine viagra with other drugs that increase libido – this can lead to hospitalization and serious consequences for your body.