Most people can eat around for cloves of garlic per day according to a study that was done at the University of Maryland Medical Center. Although it may be true that four cloves of garlic per day may be completely safe for most people, that does not mean it is the case for everyone.

Some people have food allergies or sensitive stomachs that do not allow them to tolerate a certain amount of garlic throughout the day. Other people have a gastrointestinal disorder which can also cause adverse reactions from certain foods like garlic cloves, though for the most part four cloves of garlic is perfect acceptable for most people to eat every day.