Garlic's strong odor might cause poor breath or an unpleasant taste.
Gas, bloating, and heartburn can result from eating too much garlic, especially for sensitive stomachs.
Garlic allergies are rare but can include skin rashes, itching, and anaphylaxis.
Handling or eating too much raw garlic can cause skin irritation or contact dermatitis in susceptible people.
Garlic naturally thins blood. Large quantities, especially with blood-thinning drugs, may increase bleeding or clotting risk.
Stomach issues: Raw garlic is high in fructans, a type of carbohydrate that can induce diarrhea or stomach upset in those with IBS or fructose malabsorption.
Garlic supplements and high doses of raw garlic can interact with pharmaceuticals, reducing their efficacy.
Due to sweat and breath excretion, eating a lot of garlic might cause a garlicky body odor.