How many garlic cloves a day to fight an infection?

How Much Garlic Should You Take to Fight Infection?

Garlic has long been valued for its natural antibacterial and immune-boosting properties, thanks largely to allicin, the active compound released when garlic is crushed or chopped. While there's no official medical dosage for garlic to fight infections, some research provides useful guidance.

Studies exploring raw garlic's effects have used around 100 mg of crushed raw garlic per kilogram of body weight—split into two doses daily. For most adults, this translates to roughly three to four cloves per day. While that might sound like a lot, especially for those sensitive to garlic’s pungency, it’s important to note that cooking can reduce its potency. Raw or lightly crushed garlic tends to be more effective when fighting off illness.

However, not everyone can tolerate eating several raw cloves daily—both for taste and digestive reasons. In such cases, aged garlic extract supplements offer a gentler alternative. These are standardized for active compounds and are easier on the stomach. Look for supplements that list allicin potential or S-allyl cysteine content on the label, as these indicate potency.

It's also worth remembering that while garlic can support immune function, it's not a substitute for medical treatment during serious infections. Overdoing it may lead to heartburn, nausea, or interact with blood thinners. As with any natural remedy, moderation is key.

So, whether you're slicing cloves into salad or taking a daily capsule, incorporating a few cloves’ worth of garlic into your routine may give your immune system a helpful nudge—especially during cold and flu season.