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Prairie Naturals Cal-Mag Force 2:1, 400mg Calcium and 200mg Magnesium with Vitamin D and Zinc for Bone Health, 90-180 Tablets
Prairie Naturals Cal-Mag Force 2:1, 400mg Calcium and 200mg Magnesium with Vitamin D and Zinc for Bone Health, 90-180 Tablets
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Prairie Naturals Cal-Mag Force 2:1 provides 400mg calcium and 200mg magnesium per tablet in highly absorbable chelate and citrate forms, with vitamin D3 and zinc.

Prairie Naturals Cal-Mag Force 2:1, 400mg Calcium and 200mg Magnesium with Vitamin D and Zinc for Bone Health, 90-180 Tablets
:by Prairie Naturals
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Prairie Naturals Cal-Mag Force 2:1 Details
The 2:1 ratio in the name is the point of the formula. Calcium and magnesium compete for the same absorption pathways and work against each other physiologically — calcium contracts muscle, magnesium relaxes it — so taking calcium alone at high doses without magnesium tends to be counterproductive. Two parts calcium to one part magnesium is the ratio most commonly used to keep the two in balance.
Form matters as much as ratio. Prairie Naturals uses calcium as an amino acid chelate and citrate rather than the cheap carbonate that fills most bone formulas. Carbonate needs stomach acid to dissolve, which is a genuine problem for the older adults who most need calcium and who most often have reduced acid production. Citrate and chelate absorb without that dependency, and the formula includes betaine hydrochloride to support digestion further.
Vitamin D3 and zinc round it out — D3 because calcium absorption depends on it, zinc because it participates in bone matrix formation. Horsetail contributes silica, traditionally used for connective tissue. Two sizes: 90 and 180 tablets. Prairie Naturals has been formulating in British Columbia since 1993, without artificial colours, artificial sweeteners or unnecessary fillers.
Who Prairie Naturals Cal-Mag Force 2:1 Is For
This suits anyone building or protecting bone density — post-menopausal women, older adults, people with low dietary dairy, and anyone advised to supplement calcium. Because magnesium is included at a meaningful level it also suits people who take calcium and find they get cramps or constipation from it.
If you only want magnesium, buy magnesium — this is a calcium-led formula and 400 mg per tablet is a substantial dose. Anyone with heart or kidney problems or cardiovascular disease should consult a practitioner before starting calcium supplementation, as should anyone taking medication that interacts with minerals.
Prairie Naturals Cal-Mag Force 2:1 Features and Benefits
- Optimal 2:1 Calcium to Magnesium Ratio — 400 mg calcium to 200 mg magnesium, the ratio that keeps the two minerals in balance.
- Amino Acid Chelate and Citrate Forms — Absorbed without depending on stomach acid, unlike the carbonate most bone formulas use.
- Vitamin D3 Included — Calcium absorption depends on adequate vitamin D, so the two belong in the same tablet.
- Zinc for Bone Matrix — 6 mg of zinc citrate, participating in bone tissue formation.
- Betaine Hydrochloride — Supports the digestion and absorption of the minerals in the formula.
- Horsetail for Silica — Equisetum arvense contributes silica, traditionally used for connective tissue.
- Two Sizes — 90 and 180 tablets, so 45 or 90 days at two tablets daily.
Frequently Asked Questions
Product Information
➕ What is Prairie Naturals Cal-Mag Force 2:1?
➕ How much do I take?
➕ Which size should I buy?
➕ Why does the ratio matter?
Benefits of Ingredients
➕ Why not calcium carbonate?
➕ Why is vitamin D included?
➕ What does horsetail contribute?
Usage and Storage
➕ How do I take it?
➕ Are there any cautions?
➕ How should I store it?
Prairie Naturals Cal-Mag Force helps in the development and maintenance of bones and teeth. Calcium intake, when combined with sufficient vitamin D, a healthy diet and regular exercise, may reduce the risk of developing osteoporosis.
Additional Ingredients
Warnings