Douglas Laboratories

  • Highest sourcing standards for exceptional purity, free from contamination, best absorbability
  • GMP-compliant manufacturing facility; third-party, NSF International registered and inspected for good manufacturing practices
  • An approved producer of NSF certified-for-sport products with an ISO-accredited internal quality laboratory
  • Research-based ingredients to create safe, effective nutritional products for our doctors and health-conscious consumers.
  • Third party laboratory testing to ensure purity and potency

Best Douglas Laboratories Supplements

#1 Real Supplements Rated Best in 2020
Douglas Laboratories Multi-Probiotic 40 Billion | Provides Probiotics and Prebiotics to Support Gut Microflora and Immunity* | 60 Vegetarian Acid-Resistant Capsules
194 Reviews
Douglas Laboratories Multi-Probiotic 40 Billion | Provides Probiotics and Prebiotics to Support Gut Microflora and Immunity* | 60 Vegetarian Acid-Resistant Capsules
  • Immune Health: Offers a synbiotic blend of 16 strains that help to support immune health by balancing intestinal microflora.*
  • Shelf Stable: This formula is shelf stable and does not require refrigeration to maintain culture viability.
  • Digestive: Our digestive formulas are developed to support G.I. health and its highly complex ecosystem.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#2 Real Supplements Rated Best in 2020
Douglas Laboratories Vitamin D (5,000 I.U.) | Vitamin D3 Supplement to Support Immune Health, Calcium Levels, and Bones* | 100 Tablets
1,336 Reviews
Douglas Laboratories Vitamin D (5,000 I.U.) | Vitamin D3 Supplement to Support Immune Health, Calcium Levels, and Bones* | 100 Tablets
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#3 Real Supplements Rated Best in 2020
Douglas Laboratories Vitamin C | Water-Soluble Antioxidant Supplement to Support Immune Function and Normal Wound Healing* | 100 Tablets
193 Reviews
Douglas Laboratories Vitamin C | Water-Soluble Antioxidant Supplement to Support Immune Function and Normal Wound Healing* | 100 Tablets
  • Antioxidant Support: Vitamin C is a water-soluble antioxidant in humans and animals, supporting protection from damage.*
  • Skin & Joint Health: Vitamin C is essential for the synthesis of collagen, which is the building material of all connective tissues, such as skin, blood vessels, tendons, joint cartilage, and bone.*
  • Vitamins/Minerals/Amino Acids: Dietary supplement formulated to provide beneficial support in filling nutritional gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#4 Real Supplements Rated Best in 2020
Douglas Laboratories B-Complex w/ Metafolin | Comprehensive B Supplement to Support Blood Cells, Hormones, and Nervous System* | 60 Capsules
5 Reviews
Douglas Laboratories B-Complex w/ Metafolin | Comprehensive B Supplement to Support Blood Cells, Hormones, and Nervous System* | 60 Capsules
  • Vitamin B Source: Vitamin B complex is an essential complex in most major metabolic reactions. Includes Metafolin, methylcobalamin, other B vitamins and coenzymes essential for energy production and overall health support. Also includes thiamin, riboflavin, niacin, biotin, pantothenic acid, and other coenzymes.*
  • Healthy Blood Cells And Nervous System: Vital for maintaining healthy blood cells, hormones, and nervous system function. B complex with Metafolin provides adequate supply of B vitamins on a daily basis.*
  • Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential to live healthier, today and in the future.*
#5 Real Supplements Rated Best in 2020
Douglas Laboratories K2-D3 with Astaxanthin | Antioxidant Support for Bones, Immune Function, and Vascular Health* | 30 Capsules
91 Reviews
Douglas Laboratories K2-D3 with Astaxanthin | Antioxidant Support for Bones, Immune Function, and Vascular Health* | 30 Capsules
  • Vascular Health: Vitamins D and K combined with Astaxanthin play important roles in maintaining healthy calcium balance in the vascular system.*
  • Blood And Skeletal Health: Vitamins K and D help support the health of the blood vessels and skeletal system.*
  • Vitamins/Minerals/Amino Acids: Dietary supplement formulated to provide beneficial support in filling important nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#6 Real Supplements Rated Best in 2020
Douglas Laboratories Magnesium Citrate | Supports Normal Heart Function, Bone Formation, and Resorption, Muscles, and Membrane Transport* | 90 Capsules
196 Reviews
Douglas Laboratories Magnesium Citrate | Supports Normal Heart Function, Bone Formation, and Resorption, Muscles, and Membrane Transport* | 90 Capsules
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#7 Real Supplements Rated Best in 2020
Douglas Laboratories Ultra Preventive 2 Daily | Multivitamin and Mineral Supplement to Support Energy Production, Immune Function, and Overall Health* | 60 Tablets
1 Reviews
Douglas Laboratories Ultra Preventive 2 Daily | Multivitamin and Mineral Supplement to Support Energy Production, Immune Function, and Overall Health* | 60 Tablets
  • Essential Vitamins And Minerals: Nutrients such as beta-carotene, vitamin D, and B-complex vitamins are included in high-potency amounts because of the roles they play in antioxidant protection, energy production, immune and gastrointestinal function, the nervous system, hormonal balance, and more.*
  • Healthy Aging: Astaxanthin is included as a carotenoid antioxidant to support healthy aging.*
  • Foundation: Dietary supplement formulated to support the unique biochemical and metabolic needs of each individual.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#8 Real Supplements Rated Best in 2020
Douglas Laboratories Stress-B-Plus | Comprehensive B Vitamin Complex | 90 Tablets
164 Reviews
Douglas Laboratories Stress-B-Plus | Comprehensive B Vitamin Complex | 90 Tablets
  • Metabolism Support: B vitamins are essential components in most major metabolic reactions.*
  • Nervous System Support: B vitamins are also important for blood cells, hormones, and nervous system function.*
  • Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#9 Real Supplements Rated Best in 2020
Douglas Laboratories Cal/Mag 2001 (Calcium Two to One) | with Magnesium and Other Nutrients to Support Healthy Bone Structure | 90 Tablets
  • Magnesium/Calcium Source: Cal/Mag 2001 tablets provide 750 mg of elemental calcium from a calcium complex, together with 375 mg of elemental magnesium to provide a 2:1 dose ratio of calcium to magnesium.
  • Bone Health: Other nutrients, such as boron, glutamic acid, Vitamin C, and D-3 are also included to assist the body in maintaining healthy bone structure.*
  • Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#10 Real Supplements Rated Best in 2020
Douglas Laboratories Berberine Balance | Supplement for Immune Support, Heart Health, Lipid Metabolism, and Free Radicals* | 60 Capsules
244 Reviews
Douglas Laboratories Berberine Balance | Supplement for Immune Support, Heart Health, Lipid Metabolism, and Free Radicals* | 60 Capsules
  • Antioxidant Support: Grape seed extract, a well-known antioxidant.*
  • Cardiovascular Health: Contains grape seed extract with heart health benefits.*
  • Heart & Cardiometabolic: Dietary supplement formulated to play an intimate role in supporting optimal cardiovascular health.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#11 Real Supplements Rated Best in 2020
Douglas Laboratories Methyl Folate L-5-MTHF | 1,000 mcg Metafolin Identical to The Naturally Occurring Form of Folate to Support Overall Health * | 60 Tablets
441 Reviews
Douglas Laboratories Methyl Folate L-5-MTHF | 1,000 mcg Metafolin Identical to The Naturally Occurring Form of Folate to Support Overall Health * | 60 Tablets
  • Contains 5-MTHF: Metafolin is directly usable by the body and has been shown to be the only form of folate to cross the blood-brain barrier.*
  • Essential B Vitamin: Folate is a water-soluble essential B vitamin found in many foods, including leafy green vegetables, citrus fruits, and beans essential for a variety of processes in the body.*
  • Vitamins/Minerals/Amino Acids: Dietary supplement formulated to provide beneficial support in filling important nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#12 Real Supplements Rated Best in 2020
Douglas Laboratories Hair Growth+ | Promotes Thickness and Reduces Loss | 60 Vegetarian Capsules
19 Reviews
Douglas Laboratories Hair Growth+ | Promotes Thickness and Reduces Loss | 60 Vegetarian Capsules
  • Hair Growth: Combination of grape seed and green tea polyphenols, zinc, and taurine to support the natural hair growth cycle and provide support for hair follicles.*
  • Unique Formula: A unique ingredient to the formula is AnaGain Nu, a pea shoot extract clinically shown in men and women to promote healthy hair growth and reduce loss.*
  • Beauty By DL: Outward appearance including hair, skin and nails, is a reflection of our internal health. Supplementation with clinically studied nutrients can help support beauty from within.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#13 Real Supplements Rated Best in 2020
Douglas Laboratories Melatonin P.R. | 3 mg Prolonged-Release Melatonin to Support Sleep/Wake Cycles* | 180 Tablets
484 Reviews
Douglas Laboratories Melatonin P.R. | 3 mg Prolonged-Release Melatonin to Support Sleep/Wake Cycles* | 180 Tablets
  • Sleep Support: Regulates normal sleep/wake cycles, supports normal immune function, and is formulated to slowly breakdown and release in the small intestine.*
  • Antioxidant Support: Melatonin may also support the body's healthy defenses against oxidative damage.*
  • Sleep & Relaxation: Our sleep & relaxation formulas are developed to support the management of cortisol, hormones, neurotransmitters and relaxation to optimize health.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#14 Real Supplements Rated Best in 2020
Douglas Laboratories - Methyl B12 Plus - Supports Blood Cell Production, Nervous System, and Metabolism - 90 Lozenges
400 Reviews
Douglas Laboratories - Methyl B12 Plus - Supports Blood Cell Production, Nervous System, and Metabolism - 90 Lozenges
  • Energy Support: As coenzymes, the B vitamins play an important role in proper energy production, including the metabolism of lipids, carbohydrates, and proteins.*
  • Unique B Vitamins: Methylfolate and methylcobalamin are the predominant forms of B vitamins commonly found in cells that do not require additional conversion in the body.
  • Vitamins/Minerals/Amino Acids: Dietary supplement formulated to provide beneficial support in filling important nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential to live healthier, today and in the future.*
#15 Real Supplements Rated Best in 2020
Douglas Laboratories Hair, Skin & Nail Plus | Vitamins, Minerals, and Nutrients Formulated to Support Healthy Hair, Skin, and Nails | 100 Capsules
78 Reviews
Douglas Laboratories Hair, Skin & Nail Plus | Vitamins, Minerals, and Nutrients Formulated to Support Healthy Hair, Skin, and Nails | 100 Capsules
  • Supports Connective Tissue: Vitamin C is essential for the proper synthesis of collagen and glycosaminoglycans which are the building materials of all connective tissues, such as skin, blood vessels, tendons, joint cartilage and bone.*
  • Antioxidant Support: Vitamin C, Manganese, and Zinc work together for powerful antioxidant benefits.*
  • Foundation: Our foundational formulas include individual and multi-nutrient formulas to provide each patient with personalized nutrition.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#16 Real Supplements Rated Best in 2020
Douglas Laboratories Vitamin K2 | Menaquinone-7 Supplement to Support Bone Formation, Mineralization, and Blood Vessels* | 60 Capsules
57 Reviews
Douglas Laboratories Vitamin K2 | Menaquinone-7 Supplement to Support Bone Formation, Mineralization, and Blood Vessels* | 60 Capsules
  • Bone & Cardiovascular Health: Vitamin K2 (as MK-7) supports bone and heart health, and is more bioactive than vitamin K1 and other menaquinones.*
  • Calcium Support: Vitamin K supports the body's ability to properly distribute and utilize calcium.*
  • Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#17 Real Supplements Rated Best in 2020
Douglas Laboratories AdrenoMend | Ten Herbal Adaptogens to Support Well-Being and Adrenal Gland Function During Stress* | 120 Capsules
188 Reviews
Douglas Laboratories AdrenoMend | Ten Herbal Adaptogens to Support Well-Being and Adrenal Gland Function During Stress* | 120 Capsules
  • Stress Support: The plant adaptogens in AdrenoMend effectively support occasional stress, support the body's natural ability to adapt to stressors, and support a healthy response to damaging consequences from those stressors.
  • Overall Balance: Supports regulatory systems and the body's natural ability to respond to stress while providing an overall feeling of balance and normalization.
  • Hormone: Our hormone formulas are developed to support healthy and appropriately balanced hormones to aid in healthy and active lifestyles.
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.
#18 Real Supplements Rated Best in 2020
Douglas Laboratories | Multi-Probiotic 4 Billion | Support for Gastrointestinal and Immune Health* | 100 Capsules
137 Reviews
Douglas Laboratories | Multi-Probiotic 4 Billion | Support for Gastrointestinal and Immune Health* | 100 Capsules
  • Probiotic Blend: Immune support and gastrointestinal support;* support intestinal microflora.*
  • Lactobacillus & Bifidobacterium: 4 billion CFUs; target release in intestinal tract.*
  • Digestive: Dietary supplement formulated to support G.I. health and its highly complex ecosystem.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#19 Real Supplements Rated Best in 2020
Douglas Laboratories DIM Enhanced | Curcumin, Green Tea, and Wasabia Supplement to Support Hormone Metabolism and Cellular Health* | 60 Vegetarian Capsules
18 Reviews
Douglas Laboratories DIM Enhanced | Curcumin, Green Tea, and Wasabia Supplement to Support Hormone Metabolism and Cellular Health* | 60 Vegetarian Capsules
  • Hormone Balance And Immune Health: DIM Enhanced is a microencapsulated form of diindolylmethane, with curcumin, green tea, and wasabia designed to support healthy estrogen detoxification, hormone balance, and immune health.*
  • Detoxification Support: Studies have shown that curcumin, a naturally occurring biologically active group of compounds from Curcuma longa (turmeric), provides antioxidant support, playing an important role in maintaining the body's natural detoxification processes.*
  • Hormone: Our hormone formulas are developed to support healthy and appropriately balanced hormones to aid in healthy and active lifestyles.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
#20 Real Supplements Rated Best in 2020
Douglas Laboratories Quell Fish Oil Ultra EPA | 5:1 Ratio of EPA & DHA Essential Omega 3 Fatty Acids for Cardiovascular and Joint Health | 60 Softgels
69 Reviews
Douglas Laboratories Quell Fish Oil Ultra EPA | 5:1 Ratio of EPA & DHA Essential Omega 3 Fatty Acids for Cardiovascular and Joint Health | 60 Softgels
  • General Health: Supports EPA and DHA in cardiovascular health, neurological health, vision health, and joint health.*
  • Brain Support: DHA plays a major role in the structural integrity of healthy neuronal membranes.*
  • Foundation: Our foundational formulas include individual and multi-nutrient formulas to provide each patient with personalized nutrition.*
  • Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
  • For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*

Sam Lioon, company founder, was a nutritional pioneer. He saw an opportunity to help Americans improve their health, and began selling nutritional supplements directly to healthcare professionals. From that humble beginning, Douglas Laboratories has grown into a globally recognized leader in the development and manufacturing of innovative, science-based nutritional supplements, designed to help healthcare practitioners who are focused on the healthy aging and active lifestyles of their clients.

Benefits of Douglas Labs

State-of-the-art manufacturing facilities that surpass GMP standards and manufacturing regulations. Douglas Laboratories is a globally recognized leader in the development and manufacturing of innovative, science-based nutritional supplements, designed to help healthcare practitioners who are focused on the healthy aging and active lifestyles of their clients.

HIGHLIGHTS:

  • cGMPs for nutritional supplements in accordance with 21 CFR Part 111
  • NSF International has registered Douglas Laboratories as a GMP manufacturing facility
  • ISO 9001:2008 certification and ISO/IEC 17025:2005 accreditation of in-house laboratories
  • VCP (Vendor Certification Program) to ensure raw material quality
  • Approved facility to produce Certified Organic products
  • Approved facility to produce NSF Certified for Sport® products
  • Member of Council For Responsible Nutrition

Real Supplements gives you the best Douglas Laboratories supplements on the market today. Our top-rated lists are fresh and current so you get the best options.

Real Supps Team

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