Could you tell me what are garlic supplement gel caps good for?

Garlic supplements: It depends on what effects you're seeking. But evidence is growing that garlic -- in both food & supplement form -- may help lower blood pressure. Some others: it may also help cardiovascular health by inhibiting platelet aggregation, and increaseing fibrinolytic activity. May protect against certain cancers too. http://www.ncbi.nlm.nih.gov/pubmed/23746107.