Low price guarantee
Vitamart always has low prices and to give you full confidence we have a "Low Price Guarantee".
Find a lower online price at a major Canadian competitor and we will beat the price by 1¢!
To redeem: contact us with proof of the lower price (ie. website link) before or within 10 days of purchase and Vitamart will verify the price and refund you the difference.
Restrictions:
Competitor must ship from and be based in Canada. Vitamart does not offer a guarantee on all competitors, such as marketplaces. Product must be identical and in-stock. Does not apply to clearance, short-dated, out of date promotions, multiple buying discounts ie Buy X for $X, Spend $X get X Free, loyalty/member discount offers, or website typos. Vitamart reserves the right to deny any price claim and to limit quantities for any reason.
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
-
Sale Sold outRegular price $30.95 CADSale price $30.95 CAD Regular priceUnit price per
- Notify me when the price drops
Want to special order this item?
Request a larger quantityRequest a larger quantity
We'll email you an invoice. Once it's paid we order the stock — it typically reaches our warehouse in 1–2 weeks, then ships to you.
We usually reply within 1–2 business daysAll order items ship together
-
Enjoy secure payments powered by:
- Visa
- Master
- Apple pay
- Paypal
- Google pay
- Shopify pay
- American express
30-day Return Policy Learn more
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
If you find a lower price, we'll beat it
Quality products you can depend on
Canadian orders $79+ ship free
Not happy? Return it within 30 days

Vitacheck Magnesium Bisglycinate 200mg, Pure Elemental Magnesium, Highly Absorbable, Gentle On Bowels, Sleep Support, Muscle Recovery, Bone Health, 120 Vegetable Capsules

TrueHope Empowerplus EMP Advanced Multivitamin for Brain Health, 120 Capsules

CanPrev Magnesium Bisglycinate 200 Gentle, Highly Absorbable Magnesium 200mg, 60-240 Vegetable Capsules

Vitacheck Vitamin D3 2500IU Softgels Extra Strength, In Organic Olive Oil & MCT Oil For Better Absorption, 180-550 Softgels

Renew Life CleanseMORE, Helps relieve constipation, Hydrates and promotes bowel movements, Capsules
Prairie Naturals Cal-Mag Force 2:1 Details
Prairie Naturals Cal-Mag Force 2:1 provides 400 mg of calcium (as amino acid chelate and citrate) and 200 mg of magnesium (as oxide and citrate) in each tablet — a 2:1 ratio — with zinc 6 mg, vitamin D3 100 IU, betaine hydrochloride 30 mg, glutamic acid 30 mg, and horsetail, wild oat and alfalfa. It helps in the development and maintenance of bones and teeth. Non-GMO, yeast-free and dairy-free, with no artificial preservatives, colours or sweeteners and no starch, wheat or gluten. Available in 90 or 180 tablets.
Vitamins Lowest Prices | Lowest Price in Canada — Guaranteed | Ships from Ontario across Canada
Quick Facts
| Calcium per tablet | 400 mg (amino acid chelate, citrate) |
| Magnesium per tablet | 200 mg (oxide, citrate) |
| Also per tablet | Zinc 6 mg (citrate), vitamin D3 2.5 mcg (100 IU), betaine HCl 30 mg, glutamic acid 30 mg, horsetail 10 mg, wild oat 10 mg, alfalfa 10 mg |
| Ratio | 2:1 calcium to magnesium |
| Format | Tablets |
| Dose | 1 tablet 2 times daily |
| Sizes | 90 or 180 tablets (45 or 90 days at 2 per day) |
| Diet notes | Non-GMO, yeast-free, dairy-free; no artificial preservatives, colours or sweeteners; no starch, wheat or gluten |
Who Cal-Mag Force 2:1 Is For
- Adults looking to help with the development and maintenance of bones and teeth
- People who want calcium and magnesium together in a classic 2:1 ratio
- Those who prefer chelate and citrate forms of calcium
- Anyone with a low dairy intake who wants a calcium supplement
- People who want vitamin D3 and zinc included in their bone formula
Who this product is NOT for:
- Anyone pregnant or breastfeeding — do not use
- People with gastric hyperacidity or a peptic ulcer — do not use (it contains betaine hydrochloride)
- Anyone with heart or kidney problems or cardiovascular disease, unless a health care practitioner approves it
- People who mainly want magnesium — this is a calcium-led formula; Prairie Naturals Z-Mag Force or a magnesium-only product is a better fit
Vitamart's Take
Cal-Mag Force 2:1 is a well-rounded calcium tablet: 400 mg of calcium and 200 mg of magnesium per tablet in the 2:1 ratio, using chelate and citrate forms of calcium, with zinc and a little vitamin D3 built in. The betaine HCl and glutamic acid are a thoughtful touch for digestion, though they are also why it is not suitable for people with hyperacidity or ulcers. The vitamin D3 amount is modest at 100 IU per tablet, so many people pair it with a separate vitamin D. Two tablets a day keeps it simple.
How Cal-Mag Force 2:1 Compares
2:1 tablets vs. 2:1 liquid
Prairie Naturals Liquid Ionic Bone Solution 2:1 provides calcium 330mg and magnesium 160mg with boron and vitamin D3 in a natural fruit liquid — a fit if you prefer not to swallow tablets.
2:1 vs. 1:1 ratio
Prairie Naturals Liquid Ionic Bone Solution 1:1 gives equal amounts of calcium and magnesium for people who want more magnesium relative to calcium. Cal-Mag Force 2:1 is calcium-led.
Cal-Mag Force vs. Ultra Silica
Prairie Naturals Ultra Silica is a silica supplement for bones, hair, skin and nails. Cal-Mag Force supplies the minerals calcium and magnesium; the two are sometimes taken together.
What Is a 2:1 Calcium-Magnesium Ratio?
- It means two parts calcium to one part magnesium — here, 400 mg calcium to 200 mg magnesium per tablet
- Calcium and magnesium are both major minerals found in bone
- The 2:1 ratio is one of the most common ways the two are combined in bone formulas
- Vitamin D helps the body absorb calcium, which is why D3 is often included
- Calcium amino acid chelate and calcium citrate are alternatives to calcium carbonate
Recommended Purpose
- 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
- Helps in the absorption and use of calcium and phosphorus
- Helps to maintain proper muscle function
- Helps to maintain immune function
How To Use
- Adults: take 1 tablet 2 times daily, or as directed by a health professional
- Consult a health care practitioner prior to use if you have heart or kidney problems or cardiovascular disease
- Do not use if you are pregnant or breastfeeding, or if you have gastric hyperacidity or a peptic ulcer
- If symptoms of allergy or nausea appear, discontinue use and consult a health care practitioner; some people may experience diarrhea, and zinc supplementation can cause a copper deficiency
- Store in a cool, dry place with the lid closed; keep out of reach of children
Ingredients (per tablet)
| Calcium (amino acid chelate, citrate) | 400 mg |
| Magnesium (oxide, citrate) | 200 mg |
| Zinc (citrate) | 6 mg |
| Vitamin D3 | 2.5 mcg (100 IU) |
| Betaine hydrochloride | 30 mg |
| Glutamic acid | 30 mg |
| Horsetail 10:1 extract (equivalent to 100 mg dry herb) | 10 mg |
| Wild oat | 10 mg |
| Alfalfa | 10 mg |
Non-medicinal ingredients: microcrystalline cellulose, natural peppermint flavour, magnesium stearate, croscarmellose sodium, calcium phosphate dibasic, silicon dioxide, stearic acid, purified water, glycerin, hypromellose.
Frequently Asked Questions
➕ How much calcium and magnesium are in each tablet?
➕ What forms of calcium and magnesium are used?
➕ How do I take it?
➕ Does it contain vitamin D?
➕ Who should not take it?
➕ How long does a bottle last?
Pairs Well With
- Prairie Naturals Vitamin K2 MK-7 100mcg
- Prairie Naturals Vitamin D3 1000IU
- Prairie Naturals Ultra Silica
- Bone Health Supplements
💡 Subscribe & save for an extra discount on every order — never run out of your daily supplements.
Compare Similar Products
- All Calcium and Magnesium Supplements
- Prairie Naturals Liquid Ionic Bone Solution 2:1
- Prairie Naturals Liquid Ionic Bone Solution 1:1
- Calcium, Magnesium and Vitamin D Supplements
About Vitamart
Vitamart.ca is Canada's vitamin specialist. We've been selling vitamins and supplements to Canadian families since 2005, shipping from our Ontario warehouse to every province. We believe in quality products you trust at prices you love — no fancy packaging markups, no pushy upsells, just the supplements you need at the lowest prices in Canada. Backed by our Low Price Guarantee: find a lower advertised price at a Canadian competitor and we'll beat it by 1¢. Vitamins Lowest Prices.
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.
Nutrition Facts / Valeur nutritive
| Serving Size: 1 tablet Servings per Container: 90 - 180 |
Amount Per Serving |
| Calcium (amino acid chelate, citrate) | 400 mg |
| Magnesium (oxide, citrate) | 200 mg |
| Zinc (citrate) | 6 mg |
| Vitamin D (vitamin D3, cholecalciferol) | 2.5 mcg (100 IU) |
| Betaine hydrochloride | 30 mg |
| L-Glutamic acid hydrochloride | 30 mg |
| Equisetum arvense L. (horsetail) 10:1 extract standardized to 7% silica, equivalent to 100 mg horsetail | 10 mg |
| Avena sativa (wild oat, oatstraw) | 10 mg |
| Medicago sativa (alfalfa, leaf, organic) | 10 mg |
Additional Ingredients
Warnings