There are no specific medications or supplements to prevent bruises, but it is important to be cautious and try to avoid bumping into things as much as possible. If bruises are a frequent occurrence, it may be worth consulting a doctor to determine the underlying cause. In some cases, fragile veins or thin blood can contribute to easy bruising, and identifying the root of the issue can help prevent future problems. Regular check-ups and further investigation may be necessary to address any potential concerns.