Viagra and Cialis are both effective medications for treating erectile dysfunction (ED), but they have some key differences.

Viagra (sildenafil) is typically taken 30-60 minutes before sexual activity and lasts for up to 4-5 hours. It is important to note that Viagra does not work if you are not sexually aroused.

Cialis (tadalafil) is also taken 30-60 minutes before sexual activity, but it can last for up to 36 hours. This makes Cialis a good choice for men who want to have sex spontaneously. Cialis can also be taken daily at a lower dose for men who have frequent sexual activity.

In terms of effectiveness, Viagra and Cialis are very similar. Both medications have been shown to be effective in improving erectile function in men with ED. However, some men prefer Cialis because of its longer duration of action.

Which one is better for you?

The best way to decide which medication is right for you is to talk to your doctor. They can help you weigh the pros and cons of each medication and choose the one that is best for your individual needs.

Here is a table that summarizes the key differences between Viagra and Cialis:

Characteristic

Viagra

Cialis

Active ingredient

Sildenafil

Tadalafil

Onset of action

30-60 minutes

30-60 minutes

Duration of action

4-5 hours

Up to 36 hours

Dose

25mg, 50mg, or 100mg

2.5mg, 5mg, 10mg, or 20mg

Frequency

As needed before sexual activity

As needed before sexual activity or once daily at a lower dose

Side effects

Flushing, headache, dizziness, upset stomach, muscle pain, vision changes

Flushing, headache, dizziness, upset stomach, muscle pain, back pain, limb pain