Calm the allergic response. According to a study in the Journal of Alternative and Complementary Medicine, subjects who took 2600 mg of MSM (methylsulfonylmethane) found their upper and total respiratory symptoms significantly reduced within seven days, and improvement continued for all thirty days of the study. Also, as Dr. Mercola notes, MSM is 34% sulfur, which can help maintain optimal health. Sulfur helps the body detoxify itself, and helps produce glutathione, an important antioxidant. MSM is extremely safe and can be taken at high doses, even if one’s diet is full of raw vegetables and MSM-rich foods. Some have found complete relief from allergies with this product, but required higher daily doses than 2600 mg.