Sildenafil is a medication used to treat erectile dysfunction in men, which can be replaced sexually with medications such as tadalafil and vardenafil.
All three drugs, sildenafil, tadalafil, and vardenafil, belong to the category of phosphodiesterase type 5 inhibitors, and are all used to treat erectile dysfunction in men. The mechanism of action of the three drugs is the same, all can relax the smooth muscle, promote the penile corpus cavernosum congestion, can make the patient’s penis fast erection. Therefore, in terms of therapeutic effects, vardenafil and tadalafil can be used as an alternative to sildenafil.
However, the onset time and duration of action of these three drugs are somewhat different, vardenafil onset time is fast and long, tadalafil onset time is slow and long, and sildenafil onset time is fast and short, sexual life should be based on the characteristics of the drug to use the drug.
These drugs have certain side effects, such as flushing, dizziness, drowsiness, etc., in the use of the drug must be taken under the guidance of a doctor. It is forbidden to use it in patients with severe hepatic impairment, patients who are allergic to this type of drug and patients who have recently had a stroke.