Active Ingredients: Cyproheptadine Hydrochloride (4Mg) – An Antihistamine That Works By Blocking Histamine Receptors To Reduce Allergy Symptoms Such As Itching, Runny Nose, And Sneezing. It Also Has Appetite-Stimulating Effects And Is Used To Manage Conditions Like Anorexia Or Poor Appetite. Side Effects: Common Side Effects: Drowsiness, Dry Mouth, Blurred Vision, Dizziness, And Constipation. Less Common Side Effects: Increased Appetite, Weight Gain, And Nervousness. Serious Side Effects: Allergic Reactions (Rash, Swelling, Trouble Breathing), Confusion, Or Unusual Thoughts. Precautions: Before Taking Periactin, Consult Your Healthcare Provider If You Have A History Of Asthma, Glaucoma, High Blood Pressure, Liver Problems, Or Epilepsy. Pregnancy & Breastfeeding: Not Recommended Without A Doctor’S Guidance. Drowsiness: May Cause Drowsiness, Avoid Driving Or Operating Heavy Machinery.