MSM (Methylsulphonylmethane) is a natural form of organic sulfur found in all living organisms. This natural compound, researched since 1979, provides the chemical links needed to form and maintain numerous different types of tissues found in the human body, including connective tissue such as articular cartilage. While MSM is a natural component of almost all fresh fruits, vegetables, seafood and meat, food-processing methods reduce sulfur levels, making supplementation more important than ever. NOWr MSM is tested to meet a minimum 99.7% purity level. Details Serving Size: 1/2 teaspoon Suggested Use: As a dietary supplement, take 1/2 teaspoon 1-2 times daily in juice or other liquid. If intestinal gas occurs, reduce dosage. Free of: sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg or preservatives. Other Ingredients: Silica (anti-hardening agent). NOWr MSM is tested to contain a minimum of 99.7% purity. Vegetarian product. Warnings: This product may contain large granules or irregular shaped crystals. These granules/crystals, however, will dissolve easily in warm water or other liquid. Disclaimers: Due to presence of Silica (anti-hardening agent), this product may appear slightly cloudy when mixed with liquid. Lignisulr MSM is a registered trademark of Carolwood Corp. This product is sold by weight not volume. .