Take Lichtwer Pharma. Meanwhile, Commission E, the German agency that advises the public and health professionals on herbal medicines, no longer says that garlic lowers cholesterol. Blood clotting . Many heart attacks or strokes occur when a blood clot gets stuck in a partially clogged artery. In some studies, blood platelets from people who were given garlic supplements took longer to aggregate, or clump together, in a test tube.
Aggregation is the first step in forming a blood clot.
Heart attacks . Intermittent claudication . Some people feel pain when they walk because the arteries in their legs are clogged. There's not enough evidence to say whether garlic can help. Blood pressure .