VITAMIN D
D2 vs D3
Sources, vegan status and what research says about raising levels.
Compare →Goal
Bone Health
Calcium and vitamin D are the nutrients most closely tied to bone. Supplement trials for fracture prevention in generally healthy adults have been mixed; people with osteoporosis should follow clinical guidance.
Ingredients researchers have studied
MINERAL
Calcium
Calcium is the most abundant mineral in the body and the main structural mineral in bones and teeth. Supplements are mos
Studied for: Bone health (with vitamin D)
VITAMIN
Vitamin D
A fat-soluble vitamin sold as D2 or D3. Labels list micrograms (mcg), often with IU in parentheses.
Studied for: Correcting low vitamin D status · Bone health (with calcium)
MINERAL
Magnesium
An essential mineral sold in many salt forms — glycinate, citrate, oxide and more — with very different elemental amounts.
Studied for: Meeting magnesium needs · Occasional constipation (certain forms)
Comparisons
Products
Bright Daily Vitamin D3 Gummies
Bright Daily · Demo
- Primary ingredient
- Vitamin D3 (Cholecalciferol)
- Per serving
- 25 mcg (1,000 IU) vitamin D
- Servings
- 30
- Format
- Gummies
- Price
- Not available
- Per serving cost
- —
Not verified
Harbor & Pine Magnesium Glycinate (Buffered) 240 mg
Harbor & Pine · Demo
- Primary ingredient
- Magnesium Glycinate
- Per serving
- 240 mg elemental magnesium
- Servings
- 90
- Format
- Capsules
- Price
- $19.49*
- Per serving cost
- $0.22
Not verified
Harbor & Pine Magnesium Citrate 150 mg
Harbor & Pine · Demo
- Primary ingredient
- Magnesium Citrate
- Per serving
- 150 mg elemental magnesium
- Servings
- 60
- Format
- Capsules
- Price
- $14.99*
- Per serving cost
- $0.25
Not verified
Harbor & Pine Magnesium Oxide 250 mg
Harbor & Pine · Demo
- Primary ingredient
- Magnesium Oxide
- Per serving
- 250 mg elemental magnesium
- Servings
- 100
- Format
- Tablets
- Price
- $8.99*
- Per serving cost
- $0.09
Not verified
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Guides
This page is educational and is not medical advice. Talk to a healthcare professional before starting a supplement, especially if you have a medical condition, take medications, or are pregnant or breastfeeding.