Viagra, generally referred to as sildenafil, has common side effects including facial flushing, headaches, and cardiac distress, with the benefit of promoting penile erection when taken by patients with erectile dysfunction.
Sildenafil is a kind of drug used to treat men with abnormal penile erection, the benefit after taking sildenafil is that it can treat men with erectile dysfunction, increase the hardness of the penis, etc., so that patients with erectile dysfunction can complete their sex life successfully.
Side effects of sildenafil are generally less common and commonly include visual disturbances, facial flushing and headache due to vasodilatation, gastrointestinal discomfort due to vasodilatation of the gastrointestinal tract, nasal congestion or runny nose due to vasodilatation of the nasal vessels, and so on.
Sildenafil is contraindicated in combination with nitrates and is contraindicated in women, people who are allergic to the product, children, and people whose recent cardiovascular status makes them unfit for sexual intercourse.
The drug is a prescription drug, before using the drug must go to a professional hospital consultation, under the guidance of the doctor to apply.