DaVinci Laboratories Perna Plus 90 is a dietary supplement for proper joint and connective tissue function support. Perna Plus is an advanced formula that can be used as an alternative or along with other joint health programs. Perna canaliculus is an edible shellfish from New Zealand that has naturally occurring components that support joint lubrication and flexibility while reducing discomfort and improving range of motion. This works synergistically with glucosamine, MSM, DMG and manganese for joint and connective tissue health. Recommended usage: As a dietary supplement, take 2 tablets, 3 times daily with food for 2 to 4 weeks, then reduce to 2 tablets once or twice daily with food, or as directed by your healthcare practitioner.