One of the side effects of aspirin (such as Ecosprin) is gastric acidity, particularly when large dose is taken regularly. It would be adequate to take 75 mg daily. The tablet should be taken in the middle of the meal once a day. It would not cause much acidity; if it does, the patient can take omeprazole (Ocid) 20 mg on an SOS basis i.e. if the acidity is troublesome. I hope the patient is not suffering from peptic ulcer or gastritis because then aspirin cannot be taken.