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.
Skip to results list

Filters

117 items

Filter

  • Douglas Laboratories K2-D3 with Astaxanthin 30c

    Douglas Laboratories K2-D3 with Astaxanthin 30c

    Douglas Laboratories K2-D3 with Astaxanthin 30c
    $45.00
  • Douglas Laboratories L-Arginine 700mg 100c

    Douglas Laboratories L-Arginine 700mg 100c

    Douglas Laboratories L-Arginine 700mg 100c
    $31.00
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories L-Glutamine Powder 250g

    Douglas Laboratories L-Glutamine Powder 250g

    Douglas Laboratories L-Glutamine Powder 250g
    $51.00
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories L-Methionine 60c

    Douglas Laboratories L-Methionine 60c

    Douglas Laboratories L-Methionine 60c
    $29.50
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories L-Serine 60c

    Douglas Laboratories L-Serine 60c

    Douglas Laboratories L-Serine 60c
    $53.00
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories L-Theanine 60c

    Douglas Laboratories L-Theanine 60c

    Douglas Laboratories L-Theanine 60c
    $42.50
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories L-Tryptophan 60c

    Douglas Laboratories L-Tryptophan 60c

    Douglas Laboratories L-Tryptophan 60c
    $54.50
  • Douglas Laboratories Liposomal Glutathione 45 softgel capsules

    Douglas Laboratories Liposomal Glutathione 45 softgel capsules

    Douglas Laboratories Liposomal Glutathione 45 softgel capsules
    $87.50
  • Douglas Laboratories Liquid B12 1oz

    Douglas Laboratories Liquid B12 1oz

    Douglas Laboratories Liquid B12 1oz
    $20.60
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories Liquid Magnesium 8fl. oz (240ml)

    Douglas Laboratories Liquid Magnesium 8fl. oz (240ml)

    Douglas Laboratories Liquid Magnesium 8fl. oz (240ml)
    $38.50
  • Douglas Laboratories Liquid Vitamin D3 30ml

    Douglas Laboratories Liquid Vitamin D3 30ml

    Douglas Laboratories Liquid Vitamin D3 30ml
    $32.00
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories Magnesium Citrate 90c

    Douglas Laboratories Magnesium Citrate 90c

    Douglas Laboratories Magnesium Citrate 90c
    $20.00
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories Magnesium Glycinate 120vc

    Douglas Laboratories Magnesium Glycinate 120vc

    Douglas Laboratories Magnesium Glycinate 120vc
    $27.00
    Vegetarian Product
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories Magnesium Glycinate 240c

    Douglas Laboratories Magnesium Glycinate 240c

    Douglas Laboratories Magnesium Glycinate 240c
    $51.00
  • Douglas Laboratories Magnesium Oxide 100c

    Douglas Laboratories Magnesium Oxide 100c

    Douglas Laboratories Magnesium Oxide 100c
    $16.50
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories Magnesium Oxide 250c

    Douglas Laboratories Magnesium Oxide 250c

    Douglas Laboratories Magnesium Oxide 250c
    $22.00
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories MCT/Butyrate Liquid with Sunbutyrate 15.6 fl oz

    Douglas Laboratories MCT/Butyrate Liquid with Sunbutyrate 15.6 fl oz

    Douglas Laboratories MCT/Butyrate Liquid with Sunbutyrate 15.6 fl oz
    $52.00
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories Melatonin 3mg 60c

    Douglas Laboratories Melatonin 3mg 60c

    Douglas Laboratories Melatonin 3mg 60c
    $18.50
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories Melatonin Prolonged Release 3mg 180T

    Douglas Laboratories Melatonin Prolonged Release 3mg 180T

    Douglas Laboratories Melatonin Prolonged Release 3mg 180T
    $47.50
    Gluten Free Product
    Dairy Free Product
  • Douglas Laboratories Methyl B12 Plus 90 lozenges

    Douglas Laboratories Methyl B12 Plus 90 lozenges

    Douglas Laboratories Methyl B12 Plus 90 lozenges
    $24.00
  • Bottle of Douglas Laboratories Methyl Folate supplement on a white background

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

    Douglas Laboratories Methyl Folate L-5-MTHF 1,000 mcg 60T
    $25.00
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories Milk Thistle Max-V 60c

    Douglas Laboratories Milk Thistle Max-V 60c

    Douglas Laboratories Milk Thistle Max-V 60c
    $37.50
    Gluten Free Product
    Soy Free Product
    Dairy Free Product
  • Douglas Laboratories Multi Probiotic 40 Billion 60c

    Douglas Laboratories Multi Probiotic 40 Billion 60c

    Douglas Laboratories Multi Probiotic 40 Billion 60c
    $47.50
  • Douglas Laboratories Multi-Probiotic 4 Billion 100c

    Douglas Laboratories Multi-Probiotic 4 Billion 100c

    Douglas Laboratories Multi-Probiotic 4 Billion 100c
    $42.50
    Gluten Free Product
    Soy Free Product
    Dairy Free Product