Both Viagra (sildenafil) and Cialis (tadalafil) share some side effects, but their frequency and severity can differ. Headache is common to both, affecting roughly 15-20% of users for Viagra and a similar percentage for Cialis. Facial flushing, a reddening of the skin, also occurs with both medications, but is generally mild and temporary.
Gastrointestinal Effects
Viagra users may experience indigestion or upset stomach slightly more often than Cialis users. This difference isn’t drastic, but it’s a factor to consider if you have sensitive digestion. Nasal congestion is another side effect more prevalent with Viagra. For Cialis, back pain and muscle aches appear more frequently than with Viagra.
Visual Disturbances and Other Side Effects
Visual disturbances, such as blurred vision or changes in color perception, are possible with both drugs, though generally mild and short-lived. Rare but serious side effects, like prolonged erection (priapism) or sudden vision or hearing loss, require immediate medical attention. Both medications may affect blood pressure, so individuals with existing heart conditions should discuss this thoroughly with their doctor before use. Cialis’s longer duration of action can sometimes lead to a slightly increased risk of these side effects, however, the overall difference in risk is marginal. Always consult your doctor to weigh the benefits and risks.
