 For over 60 years, Douglas Laboratories has developed and manufactured innovative, science-backed nutritional supplements designed for long-term health, healthy aging, and the maintenance of an active lifestyle. Some popular products from Douglas Laboratories includes multi-probiotic 40 billion, multi-probiotic 40 billion, this symbiotic blend of 16 potent strands of beneficial microflora plus FOS provides 40 billion CFU per vegetarian capsule. Vitamin D5000, one capsule provides 5,000 IU of natural bioavailable vitamin D3. B-complex with Metafolon, this product provides a comprehensive blend of highly bioavailable essential B vitamins along with intrinsic factor and necessary nutrient for efficient and optimal B12 absorption. Beauty Box Skin Support, this kit includes one bottle of skin protect and one bottle Skin Protect delivers a clinically studied blend of antioxidants to promote smooth, healthy skin from the inside out while helping to defend against harmful effects of UV sunlight, exposure, and environmental stresses. If you have any questions about this brand or any other brand that Professional Supplement Center carries, please call, visit, or email us and one of our knowledgeable staff members will be happy to assist you.