Vilitra contains vardenafil, which is used to treat erectile dysfunction (ED). Like with any medication, there is a possibility of experiencing an allergic reaction, though it’s relatively rare. Here's how you can recognize an allergic reaction to Vilitra: Common Signs of an Allergic Reaction: Skin Reactions: Rash: A red, itchy, or blotchy skin rash can be a sign of an allergic reaction. Hives: Raised, red, and itchy welts on the skin (urticaria) can occur. Swelling: Swelling of the face, lips, tongue, or throat: This is a more severe allergic reaction (angioedema) and can cause difficulty breathing or swallowing. This is a medical emergency. Breathing Difficulties: Shortness of breath or wheezing, which could be signs of an asthma-like reaction or other respiratory issues caused by the allergy. Dizziness or Lightheadedness: Feeling unusually lightheaded or dizzy can sometimes be associated with an allergic reaction. If accompanied by any swelling or breathing issues, seek medical help immediately. Chest Tightness or Pain: Any discomfort in the chest, especially if it occurs shortly after taking Vilitra, could signal an allergic reaction and requires urgent medical attention. Swelling in Extremities: Some people might experience swelling in the hands, feet, or ankles as part of an allergic reaction. Other Potential Symptoms of an Allergic Reaction to Vilitra: Fever: A mild or moderate increase in body temperature could be linked to an allergy. Itchy or red eyes: Itchy or swollen eyes could signal an allergic reaction, though it's less common.