Imudot 400 Tablet is a prescription medicine used to prevent diseases of the respiratory tract. It helps to improve and increase immunity and prevents recurrent bacterial or viral infections in the airways. Imudot 400 Tablet is either given alone or in combination with some other medicines. It should not be used to treat any existing infections of the respiratory tract. It should be taken with or without food, but better to take it at the same time every day to attain the most benefits. 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. You should take this medicine for as long as it is prescribed for you. Generally, no common side effects are seen with this medicine. But some people experience skin rash as a side effect. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. Before taking this medicine, let your doctor know if you have kidney disease or have diabetes. 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. Inform your doctor if you are pregnant or breastfeeding.