Garlic
Even when you are taking suppliments that are all natural you want to make sure that you read the labels and that you talk to your doctor. Garlic is great to have if you want to prevent things like colds and the flu...however, garlic can also thin the blood so if you are not suppose to be taking things like blood thinners or if you are not allowed to talk aspirin - then talk to your doctor before taking garlic suppliments.
