Capsules, powders, and tablets can all be effective but crystal sulfur is best for MSM supplements because it allows for maximum absorption and utilization of the active ingredient by the body. Sulfur crystals because they do not need to be overly processed are more effective  Crystal sulfur is really the best MSM supplement to take advantage of and is universally preferred over powdered or capsule forms. Sulfur is one of the most important elements for a healthy body. It is a major component of connective tissue, cartilage, and bones. It is also an essential element in the production of glutathione, an antioxidant that can be used as a protective shield against free radical damage.