Theosal PD Syrup is mucolytic medication. It is used in the treatment of various respiratory tract disorders associated with excessive mucus. It thins and loosens the mucus in the airway and makes it easier to cough out. Theosal PD Syrup should be taken with food. For better results, it is suggested to take it at the same time every day. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. It is advised not to use it for more than 14 days without doctor's consultation. The most common side effects of this medicine include irritation of the ear, allergic skin rash, dizziness, and headache. Talk to your doctor if you're worried about side effects or they do not go away. Generally, it is advised not to take alcohol while on treatment. Before taking this medicine, tell your doctor if you have liver or kidney disease or if you have stomach problems. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works. You must take the doctor's advice before using this medicine if you are pregnant or breastfeeding.