Vardenafil is available in tablets of 2.5 milligrams (mg), 5 mg, 10 mg, and 20 mg. The first dose is normally 10 mg.
No more than one tablet should be taken in 24 hours.
A 10-mg dose of vardenafil is approximately equivalent to 50 mg of sildenafil, or Viagra. This is because the chemical composition of vardenafil is different from that of sildenafil.
Orodispersible tablets must be left to dissolve on the tongue before swallowing. They should not be taken with any kind of drink.
The drug will not work unless the man is sexually aroused, so foreplay will normally be necessary.
Vardenafil can be taken with or without food, but drinking alcohol is not advised, as it reduces the chance of getting an erection. Alcohol can also increase the risk of adverse effects.
As with all medications, adverse effects and interactions can occur when using vardenafil.
One in 10 men will experience headache.
Other common side effects include:
- stuffy or runny nose
- stomach upset
In most cases, these disappear within a few hours.
Other potentially serious symptoms include:
- ringing in the ears, or sudden hearing loss
- irregular heartbeat
- swelling in the ankles, hands, or feet
- difficulty breathing
- chest pain
The patient should stop using vardenafil if these occur.
Rarely, an allergic reaction may occur. This can lead to hives, difficulty breathing, and swelling of the face, tongue, and throat. It can lead to shock, and it can be fatal. If these symptoms appear, it should be treated as a medical emergency