<p>Patients suffering from bronchial asthma must be strictly controlled during the therapy; should bronchospasm occur, the treatment must immediately be suspended. Caution should be taken in patients suffering from or with a history of peptic ulcer. As Viscotin contains sodium (156.9mg per dose) this has to be taken into consideration by patients on a controlled sodium diet. The possible presence of a sulphureous odor does not indicate an alteration of the product but is a characteristic of the active ingredient contained in this preparation. It is preferable not to mix other drugs with the Viscotin solution.</p>