Ismigen Tablet is a prescription medicine used to prevent diseases of respiratory tract. It helps to improve and increase immunity and prevents recurrent bacterial or viral infections in the airways. Ismigen 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 on empty, but better to take it at same time every day to attain 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, it is safe to use medicine with no common side effects. 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.