So this may not truly be a supplement, but it's still a helpful addition to your anti-aging regimen. Studies show taking it daily may reduce your risk of heart attack by thinning the blood, thus reducing blood clots. The downside is that it's best used by people who have either had a previous heart attack, are at high risk of heart attacks, or suffer from diabetes. If you'd like to consider taking aspiring, consult with your doctor first, so he or she can assess and risks. Unpleasant side effects include ulcers, allergic reactions, and ringing in the ears.