Medicine Name: Kofarest Syrup. Composition: Ambroxol (30mg/5ml) + Guaifenesin (100mg/5ml) + Terbutaline (2.5mg/5ml). Side Effects: Nausea Vomiting Diarrhea Dizziness Headache Rash Tremors Increased heart rate Indigestion Bloating Upper abdominal pain Urticaria Itching Sweating Changes in serum aminotransferase levels.