Aspirin belongs to the class of anti-inflammatory and blood-thinning/antiplatelet agents. Its use varies according to its strength. In a low dose (about 75 mg), Aspirin acts as a blood-thinning or antiplatelet agent used to prevent heart attack and stroke. On the other hand, a high dose (about 325 mg) acts as an analgesic, relieving minor aches, pains and fevers. Your doctor may also prescribe Ecosprin-150 Tablet immediately after a heart attack to prevent further clots and heart tissue death