Kamagra Oral Jelly, like any medication, may cause side effects. It's important to be aware of these potential side effects and seek medical attention if they become severe or persistent. A common side effect is a headache, which may range from mild to moderate in intensity. Staying hydrated and managing stress can sometimes help alleviate this symptom. Some individuals may experience facial flushing, characterized by redness or warmth in the face. This is generally a temporary and benign reaction to the medication.