Choosing between Viagra, Cialis, and Levitra requires understanding potential side effects. While generally safe for most men, each drug carries unique risks. Headaches are common with all three, occurring in roughly 10-15% of users. Facial flushing (redness) is another frequent side effect, affecting a similar percentage. Nasal congestion, affecting approximately 5-10% of users, is also reported with each medication.
Gastrointestinal Issues and Vision Changes
Upset stomach, including indigestion and diarrhea, is a possibility, though less prevalent than headaches or flushing. Importantly, vision changes, such as temporary blurred vision or changes in color perception, are reported, albeit infrequently, with all three medications. These are usually temporary and subside quickly. Muscle aches and back pain are also potential side effects, reported in a small percentage of users.
Less Common, but Serious Side Effects
Rarely, but seriously, these medications can cause a prolonged erection (priapism), requiring immediate medical attention. A sudden decrease or loss of vision or hearing can also occur, necessitating immediate consultation with a doctor. Men with pre-existing heart conditions should exercise caution and discuss use with their physician. Always follow your doctor’s instructions and report any unusual side effects promptly.
