ALGAECAL Plus Calcium Supplement for Bone Density, with D3 K2, 120 Caps

AlgaeCal Plus contains naturally-occurring magnesium from the algae, plus additional magnesium oxide for an optimal 2:1 calcium to magnesium ratio. This is the same ratio that is found in your body and has been clinically supported in human studies.

Most people who experience stomach troubles from rock-source calcium supplements have not experienced adverse side effects from AlgaeCal. Our plant-based calcium supplement contains a variety of balancing minerals which make it more easily digested.

The recommended daily dose is based on what minerals our bones need, not weight. If you are petite, you are at a higher risk for bone density loss because you have less skeletal mass to begin with, so a full dose is recommended.

AlgaeCal Plus contains only a tiny amount of naturally occurring iodine. This is well within the normal range found in many everyday foods. For example three medium-sized potatoes will contain roughly 180 mcg.

However, if you have a thyroid condition, it’s always wise to check with your doctor to confirm that this amount is appropriate for your individual needs.

For best absorption and to avoid any interaction with thyroid medications, take AlgaeCal Plus at least 4 hours apart from your thyroid prescription.

No. AlgaeCal Plus is safe and without adverse side effects. Here’s why:

- Plant-based, not rock-based: Unlike traditional calcium supplements made from limestone or marble, AlgaeCal Plus is a food-source calcium similar to the calcium found in vegetables like broccoli and kale. So your body recognizes it as food and absorbs it accordingly.

- Balanced with co-factors: Each serving provides additional magnesium, boron, vitamin K2, and vitamin D3. These nutrients work together to move calcium into your bones where it belongs, and away from soft tissues like arteries, kidneys, or eyes.

- Clinically effective at a lower dose: AlgaeCal Plus increases bone density with only 720 mg of calcium per day, the exact amount used in human clinical studies. Traditional calcium supplements often recommend 1,200 mg or more—and still only slow bone loss.

Because AlgaeCal Plus delivers the right kind of calcium, in the right balance, it strengthens bones without the risks of kidney stones or arterial calcification.

AlgaeCal Plus is a plant-based calcium supplement made from a unique South American marine algae called Mesophyllum superpositum. These USDA-certified organic algae are sustainably hand-harvested from the ocean, gently sun-dried, and milled into a fine powder.

Unlike traditional calcium supplements, which are typically derived from rocks like limestone or marble, AlgaeCal Plus is a whole-food source of all 13 essential bone-supporting minerals: calcium, magnesium, manganese, phosphorous, nickel, silica, copper, vanadium, potassium, zinc, boron, selenium and strontium. And because it comes from a living plant, this natural mineral matrix is easier for your body to absorb and utilize. 

In addition to these 13 minerals we also add full clinical doses of vitamins C, D, and K. 

Clinical research published in three peer-reviewed scientific journals shows that the 16 nutrients in AlgaeCal Plus don’t just slow bone loss; they can actually help increase bone density in adults. No other calcium supplement can make this claim. Because AlgaeCal is the ONLY one that’s clinically supported to increase bone density.