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Collection: Douglas Laboratories

For over 50 years, Douglas Laboratories has been dedicated to formulating high-quality nutritional supplements, adhering to rigorous standards often overlooked by others. They utilize Good Manufacturing Practices (GMP), ISO-certified labs, and a Vendor Certification Program (VCP) to ensure top-quality products you can trust.

At OVitaminPro, we proudly offer a wide range of Douglas Laboratories supplements, including the top-rated Ultra-Preventive X multivitamin, to support your healthy and active lifestyle.

Douglas Laboratories Magnesium Oxide 100c

Douglas Laboratories Magnesium Oxide 100c

Regular price $16.50

Regular price Sale price $16.50
Unit price per
Douglas Laboratories Magnesium Oxide 250c

Douglas Laboratories Magnesium Oxide 250c

Regular price $20.70

Regular price Sale price $20.70
Unit price per
Douglas Laboratories Magnesium Taurate 400 120T

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Douglas Laboratories Magnesium Taurate 400 120T

Regular price $26.60

Regular price Sale price $26.60
Unit price per

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Douglas Laboratories Malic Acid + Magnesium Tablets 180T

Douglas Laboratories Malic Acid + Magnesium Tablets 180T

Regular price $30.60

Regular price Sale price $30.60
Unit price per
Douglas Laboratories Manganese 60vc

Douglas Laboratories Manganese 60vc

Regular price $17.00

Regular price Sale price $17.00
Unit price per
Douglas Laboratories MCT/Butyrate Liquid with Sunbutyrate 15.6 fl oz

Douglas Laboratories MCT/Butyrate Liquid with Sunbutyrate 15.6 fl oz

Regular price $50.00

Regular price Sale price $50.00
Unit price per
Douglas Laboratories Melatonin 1mg 60T

Douglas Laboratories Melatonin 1mg 60T

Regular price $17.50

Regular price Sale price $17.50
Unit price per
Douglas Laboratories Melatonin 3mg 60c

Douglas Laboratories Melatonin 3mg 60c

Regular price $18.50

Regular price Sale price $18.50
Unit price per
Douglas Laboratories Melatonin Prolonged Release 3mg 180T

Douglas Laboratories Melatonin Prolonged Release 3mg 180T

Regular price $43.60

Regular price Sale price $43.60
Unit price per
Douglas Laboratories Melatonin Prolonged Release 3mg 60T

Douglas Laboratories Melatonin Prolonged Release 3mg 60T

Regular price $19.80

Regular price Sale price $19.80
Unit price per
Douglas Laboratories Metabolic Lean 60c

Douglas Laboratories Metabolic Lean 60c

Regular price $55.40

Regular price Sale price $55.40
Unit price per
Douglas Laboratories Methyl B12 Plus 90 lozenges

Douglas Laboratories Methyl B12 Plus 90 lozenges

2 total reviews

Regular price $23.20

Regular price Sale price $23.20
Unit price per
Douglas Laboratories Methyl Folate 5 mg 60c

Douglas Laboratories Methyl Folate 5 mg 60c

Regular price $72.40

Regular price Sale price $72.40
Unit price per
Douglas Laboratories Methyl Folate L-5-MTHF 1,000 mcg 60T

Douglas Laboratories Methyl Folate L-5-MTHF 1,000 mcg 60T

Regular price $24.00

Regular price Sale price $24.00
Unit price per
Douglas Laboratories Methylated Resveratrol Plus 30 vegetarian capsules

Douglas Laboratories Methylated Resveratrol Plus 30 vegetarian capsules

Regular price $81.60

Regular price Sale price $81.60
Unit price per
Douglas Laboratories Milk Thistle Max-V 60c

Douglas Laboratories Milk Thistle Max-V 60c

Regular price $35.80

Regular price Sale price $35.80
Unit price per
Douglas Laboratories Molybdenum 250mcg 100T

Douglas Laboratories Molybdenum 250mcg 100T

Regular price $16.40

Regular price Sale price $16.40
Unit price per
Douglas Laboratories MSM Capsules 100c

Douglas Laboratories MSM Capsules 100c

Regular price $32.40

Regular price Sale price $32.40
Unit price per
Douglas Laboratories Multi Probiotic 40 Billion 60c

Douglas Laboratories Multi Probiotic 40 Billion 60c

1 total reviews

Regular price $45.60

Regular price Sale price $45.60
Unit price per
Douglas Laboratories Multi-Probiotic 4 Billion 100c

Douglas Laboratories Multi-Probiotic 4 Billion 100c

Regular price $40.60

Regular price Sale price $40.60
Unit price per
Douglas Laboratories N-Acetyl-L-Cysteine 600 mg 90vc

Douglas Laboratories N-Acetyl-L-Cysteine 600 mg 90vc

Regular price $30.60

Regular price Sale price $30.60
Unit price per
Douglas Laboratories Natural C 100T

Douglas Laboratories Natural C 100T

Regular price $22.20

Regular price Sale price $22.20
Unit price per
Douglas Laboratories Natural C 250T

Douglas Laboratories Natural C 250T

Regular price $44.40

Regular price Sale price $44.40
Unit price per
Douglas Laboratories Natural Vitamin E Complex 100c

Douglas Laboratories Natural Vitamin E Complex 100c

Regular price $41.20

Regular price Sale price $41.20
Unit price per
Douglas Laboratories Niacinamide 100c

Douglas Laboratories Niacinamide 100c

Regular price $18.10

Regular price Sale price $18.10
Unit price per
Douglas Laboratories Niatab 500 100T

Douglas Laboratories Niatab 500 100T

Regular price $20.70

Regular price Sale price $20.70
Unit price per
Douglas Laboratories Nutri-E 400 Forte 60sg

Douglas Laboratories Nutri-E 400 Forte 60sg

Regular price $52.00

Regular price Sale price $52.00
Unit price per
Douglas Laboratories Olive Leaf Extract 120c

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Douglas Laboratories Olive Leaf Extract 120c

1 total reviews

Regular price $51.20

Regular price Sale price $51.20
Unit price per

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Douglas Laboratories Olive Leaf Extract 60c

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Douglas Laboratories Olive Leaf Extract 60c

Regular price $29.60

Regular price Sale price $29.60
Unit price per

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Douglas Laboratories Opti-DHA Enteric Coated 60sg

Douglas Laboratories Opti-DHA Enteric Coated 60sg

Regular price $39.00

Regular price Sale price $39.00
Unit price per
Douglas Laboratories Opti-EPA 500 (Cholesterol Free) 60sg

Douglas Laboratories Opti-EPA 500 (Cholesterol Free) 60sg

Regular price $32.20

Regular price Sale price $32.20
Unit price per
Douglas Laboratories Opti-Zinc 90c

Douglas Laboratories Opti-Zinc 90c

Regular price $20.30

Regular price Sale price $20.30
Unit price per
Douglas Laboratories Optimized Curcumin with Neurophenol 60c

Douglas Laboratories Optimized Curcumin with Neurophenol 60c

Regular price $61.80

Regular price Sale price $61.80
Unit price per
Douglas Laboratories Pantothenic Acid 500mg 100c

Douglas Laboratories Pantothenic Acid 500mg 100c

Regular price $20.20

Regular price Sale price $20.20
Unit price per
Douglas Laboratories Policosanol 60c

Douglas Laboratories Policosanol 60c

Regular price $27.40

Regular price Sale price $27.40
Unit price per
Douglas Laboratories Potassium Chelated 100c

Douglas Laboratories Potassium Chelated 100c

Regular price $19.20

Regular price Sale price $19.20
Unit price per
Douglas Laboratories PQQ Plus 30c

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Douglas Laboratories PQQ Plus 30c

Regular price $85.20

Regular price Sale price $85.20
Unit price per

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Douglas Laboratories Pregnenolone 25mg 60T

Douglas Laboratories Pregnenolone 25mg 60T

Regular price $29.80

Regular price Sale price $29.80
Unit price per
Douglas Laboratories Pregnenolone 5mg 100T

Douglas Laboratories Pregnenolone 5mg 100T

Regular price $19.70

Regular price Sale price $19.70
Unit price per
Douglas Laboratories Prenatal 60vc

Douglas Laboratories Prenatal 60vc

Regular price $30.80

Regular price Sale price $30.80
Unit price per
Douglas Laboratories Pycnogenol 25mg 120c

Douglas Laboratories Pycnogenol 25mg 120c

Regular price $82.80

Regular price Sale price $82.80
Unit price per
Douglas Laboratories Pycnogenol 50mg 90T

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Douglas Laboratories Pycnogenol 50mg 90T

Regular price $108.00

Regular price Sale price $108.00
Unit price per

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Douglas Laboratories Pylori-Plex 60c

Douglas Laboratories Pylori-Plex 60c

Regular price $76.60

Regular price Sale price $76.60
Unit price per
Douglas Laboratories Pyridoxal 5-Phosphate 100vc

Douglas Laboratories Pyridoxal 5-Phosphate 100vc

Regular price $22.30

Regular price Sale price $22.30
Unit price per
Douglas Laboratories Pyridoxal 5-Phosphate 60c

Douglas Laboratories Pyridoxal 5-Phosphate 60c

Regular price $19.60

Regular price Sale price $19.60
Unit price per
Douglas Laboratories Quell Fish Oil Ultra SPM 60sg

Douglas Laboratories Quell Fish Oil Ultra SPM 60sg

Regular price $82.40

Regular price Sale price $82.40
Unit price per
Douglas Laboratories Quercetin Bromelain Complex 100T

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Douglas Laboratories Quercetin Bromelain Complex 100T

Regular price $39.60

Regular price Sale price $39.60
Unit price per

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Douglas Laboratories Querciplex 60vc

Douglas Laboratories Querciplex 60vc

1 total reviews

Regular price $36.20

Regular price Sale price $36.20
Unit price per
Douglas Laboratories Relora-Plex 60c

Douglas Laboratories Relora-Plex 60c

Regular price $46.00

Regular price Sale price $46.00
Unit price per
Douglas Laboratories Resveratrol 30c

Douglas Laboratories Resveratrol 30c

Regular price $76.00

Regular price Sale price $76.00
Unit price per

All products, claims and testimonials made about specific products on or through this site have not been evaluated by the United States Food and Drug Administration and are not approved to diagnose, treat, cure or prevent disease. Any information contained on any product label or packaging and any information provided on OVitaminPro.com is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. *Any Free USPS Ground Shipping Offer Applies to Continental U.S. Locations Only