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Douglas Laboratories - Vitamin D 1000 IU

Douglas Laboratories - Vitamin D 1000 IU

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Info: 100 Tablets; Temporarily Unavailable

Vitamin D is normally produced in your skin by exposure to adequate levels of sunlight, but for many people, that only really happens during the summer months. It is an important hormone in the body not only to keep bones, teeth, and muscles healthy and to help control the body's levels of calcium and phosphate, but it also appears to have immune-regulatory effects.

Product Notes:

Vitamin D deficiencies are implicated in a number of health problems, including loss of bone density, chronic fatigue, mood changes, muscle weakness, and immune-mediated inflammatory diseases (IMID), so supplementation is recommended, especially after the summer months (or even throughout the year, if not very much of your skin gets exposed to the sun even in the summer or it's always covered with a lot of sunscreen). Those with a history of osteoporotic fractures, increased risk for falls, or a diagnosis of osteoporosis, ovary or breast cancer, or of course a vitamin D deficiency are especially encouraged to seek supplementation. In addition, supplementation during pregnancy is associated with improved offspring vitamin D sufficiency status, improved fetal linear growth, and reduced fetal or neonatal mortality.

Vitamin D deficiency has also been associated with migraine headaches, and there are some suggestions in the scientific literature that supplements might decrease their frequency.


Each tablet contains:

Vitamin D [Vitamin D-3 (Cholecalciferol)]: 25 mcg (1000 IU)

Non-medicinal ingredients: Cellulose, stearic acid, magnesium stearate, silica.

Suggested Usage:

Adults: Take 1 tablet daily with food, or as directed by a healthcare practitioner. Store in a cool, dry place, away from direct light.


Keep out of reach of children. Consult a healthcare practitioner prior to using Douglas Labs Vitamin D if pregnant or breastfeeding.

Health Canada Natural Product Number: 80061134.

Supporting Science:

“Effects of vitamin D supplementation during pregnancy on offspring health at birth: A meta-analysis of randomized controlled trails.” Clinical Nutrition (Edinburgh, Scotland), 2022.

“Immunoceuticals: Harnessing Their Immunomodulatory Potential to Promote Health and Wellness.” Nutrients, 2022.

“Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis.” Allergy, 2022.

“Regulation of Immune Function by Vitamin D and Its Use in Diseases of Immunity.” Endocrinology and Metabolism Clinics of North America, 2017.

“Vitamin D in migraine headache: a comprehensive review on literature.” Neurological Sciences: Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2019.

“Vitamin D Supplementation for Extraskeletal Indications in Older Persons.” Journal of the American Medical Directors Association, 2020.

“Vitamin D supplementation review and recommendations for women diagnosed with breast or ovary cancer in the context of bone health and cancer prognosis/risk.” Critical Reviews in Oncology/Hematology, 2015.

“Vitamin D: Vitamin or Hormone?” The Nursing Clinics of North America, 2021.

UPC / Barcode: 310539039670