Doctor's best glucosamine chondroitin msm with optimsm dietary supplement provides you with the important nutrients glucosamine, chondroitin and methylsulfonylmethane or msm, which help support and maintain strong healthy joints and connective tissues. Our optimsm is an excellent source of bioavailable sulfur, purified through distillation to deliver the highest purity and consistency. This supplement comes in a bottle of 120 capsules.