Cenforce FM 100 mg can potentially cause allergic reactions, though they are rare.   About Cenforce FM 100 mg Active ingredients: Sildenafil citrate 100 mg – treats erectile dysfunction Flibanserin 100 mg – sometimes included in combination formulations for ****** desire (depending on local brand version) Used to improve erectile function (and sometimes ****** desire in combination products).  Allergic Reactions Some people may develop an allergy to sildenafil or other ingredients in the tablet. Symptoms can include: Skin reactions: rash, hives, Cenforce FM 100 mg Swelling: lips, tongue, face, or throat (angioedema) Respiratory issues: difficulty breathing, wheezing, tightness in chest Severe reactions: anaphylaxis (very rare, requires immediate emergency care)   Precautions Do not take if you know you are allergic to sildenafil, flibanserin, or any excipients in the tablet. Seek immediate medical help if you notice swelling of the face, lips, throat, or difficulty breathing. People with multiple allergies or a history of severe drug allergies should inform their doctor before taking Cenforce FM.  Common Non-Allergic Side Effects Headache Flushing Nasal congestion Indigestion Dizziness Most side effects are mild, but true allergic reactions are rare. Always start under medical supervision if it’s your first time taking the medication. If you want, I can make a quick chart of all ED drugs you’ve asked about, showing common side effects and allergic risks for easy comparison. It’s useful to see which ones are more likely to cause reactions.