Onions and garlic are in the same genus and have very similar properties. Both are antimicrobial, anti-inflammatory, anti-cancer, immune stimulating etc… Both help control blood sugar and help with atheroscerosis and a half dozen other things.
And, eaten in large quantities, both can be effective for birth control…unless you can get your partner to hold their nose. 😉
They must be used raw. Cooked onions and garlic have no medicinal benefits.
Don't use herbs or combine herbs with medications or use them during lactation or pregnancy without talking with your healthcare provider.