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Aleta 🇺🇸
Verified Customer
I have been using AlgaeCal plus for three years now. My Dexa reports just keep improving and I am 73 years old. I am so thankful my doctor recommended it after I got "that" scan showing osteopenia. My doctor says to keep on keeping on with AlgaeCal. That is exactly what I intend to do.

AlgaeCal Organic Red Algae Calcium

AlgaeCal Organic Red Algae Calcium

 (6731 Reviews)
Regular price $77.50
Regular price $77.50 Sale price $80.00
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#1
BESTSELLER OF 2025

1. Plant-based calcium from marine algae. Gentle on stomach, easier to absorb, and packed with13 essential bone-building minerals.
2. The only calcium supplement clinically shown to slow bone loss. A natural, sustainable choicefor long-term bone health.
3. Strengthen your bones naturally. Provides full-spectrum plant calcium plus Vitamins D3 and K2for superior absorption and support.
4. Nourish your bones with nature's formula. Rich in calcium, magnesium, and trace minerals fromred ocean algae for holistic health

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All the Nutrients You Need

AlgaeCal Plus contains 16 bone-supporting nutrients – including our organic ocean calcium, boron, magnesium, vitamin C, vitamin D3, and vitamin K2-7. This unique formulation was the first – and still only – calciumclinically supported to increase bone density.

How Does AlgaeCal Plus Compare?

  Others

Calcium

Magnesium

Vitamin D3

Vitamin K

Boron

Vitamin C

Potassium

Copper

Manganese

Silicon

Nickel

Phosphorus

Selenium

Strontium

Vanadium

Zinc

  • Nutrition Journal

    216Participants.
    2.18%Average bone density increase.

    AlgaeCal Plus and Strontium Boost increase adult bone density after 6 months.

  • International Journal of Medical Sciences

    414Participants
    1.3%Minimum recorded bone density increase
    Examines the effect of 3 AlgaeCal formulations on post-menopausal women’s bone density at 1 Year.

  • The Journal of the American College of Nutrition

    172Participants
    7.3%Average bone density increases after 7 years
    Women who took AlgaeCal Plus and Strontium Boost for 7 years showed continually Increasing bone density.

    • Lara Pizzorno (MDiv, MA, LMT, Bone Health Expert)

      Best-Selling Author of Healthy Bones Healthy You! and Your Bones; Editor of Longevity Medicine Review, and Senior Medical Editor for Integrative Medicine Advisors.

    • Dr. Lawrence (Larry) A.May(MD, FACP, Harvard Trained Physician)

      Doctor of Internal Medicine at Providence Cedars-Sinai Tarzana Medical Center and author of several articles and books, including the widely utilized and best-selling medical textbook Primary Care Medicine.

    • Dr. Liz Lipski(PhD, CNS, FACN, IFMP, BCHN, LDN)

      Professor and Director of Academic Development, Nutrition Programs in Clinical Nutrition at Maryland University of Integrative Health.

    • Dr. Emma Gasinski(PT, DPT, RYT)

      Physical therapist and certified yoga teacher with a Doctorate in Physical Therapy from Rocky Mountains University of Health Professionals.

      Frequently Asked Questions

      What is AlgaeCal Plus?

      AlgaeCal is a South American marine algae species,Mesophyllum superpositum(or Algas calcareas as the locals call it). This kiwi-fruit sized algae is sustainably hand harvested in the atlantic ocean, sun dried, then milled into a powder. There is no extraction process or additives used – just pure whole food calcium and minerals coming from a living plant.
      AlgaeCal powder has significant advantages over traditional calcium supplements that are pure calcium becauseAlgaeCal contains all 13 known essential bone supporting minerals: calcium, magnesium, manganese, phosphorous, nickel, silica, copper, vanadium, potassium, zinc, boron, selenium and strontium. Traditional calcium carbonate and calcium citrate supplements are made from limestone and marble – and your body does not absorb rocks very well – so plant-sourced AlgaeCal has the benefit of being body-friendly and better absorbed into your bones. In fact the superfood mineral combination naturally found in AlgaeCal has been clinically supported to increase bone density in adults – but traditional calcium supplements only slow annual bone loss a little. In other words, after age 40, we typically lose 1% of our bone density every year until death – so most will become osteoporotic if they live long enough. Traditional calcium supplements slow this annual bone loss from 1% to ¾% – so it only helps a little. But AlgaeCal Plus actually increases bone density

      How many AlgaeCal Plus capsules should I take and when should I take them?

      To maximize your bone-building, take 4 capsules of AlgaeCal Plus a day. (This was the dosagethat led to the most significant bone density increases in clinical trials).
      We recommend splitting the daily 4 capsule dose into 2 servings of 2 capsules throughout the dayYour body can only absorb 500mg of calcium at a time, so taking more than 2 AlgaeCal capsulesin one serving would lead to unabsorbed calcium.
      And finally, it's best to take your AlgaeCal Plus with food. That's because taking calcium with foodincreases how well you absorb it. When you eat, your stomach produces acid that dissolves theminerals in AlaaeCal Plus so they can be properly absorbed when they reach your intestinal tract

      What ingredients are in AlgaeCal Plus?

      AlgaeCal Plus contains calcium from a marine, plant-based algae source calledMesophyllum superpositum. This algae belongs to the family of algaes known as Algas calcareas. So to make it easier to say, we just named it “AlgaeCal”! AlgaeCal has worldwide exclusive rights to this particular type of algae – and it is the only clinically backed calcium supplement in the world withhuman studiesshowing increases in bone mineral density. All other calcium has only ever been shown to slow down bone loss. In addition to this unique calcium, AlgaeCal Plus also contains magnesium, vitamin D3, vitamin K2 (in the form MK-7), vitamin C, boron and naturally-occurring trace minerals. In particular, AlgaeCal Plus contains all 13 bone-building minerals in their proper proportions that make up your bone matrix. AlgaeCal Plus is also dairy-free, soy-free, gluten-free and non-GMO!

      How much elemental calcium is in AlgaeCal Plus?

      AlgaeCal lists the minerals in the elemental form on the supplement facts label. Therefore, AlgaeCal Plus contains 360 mg of elemental calcium in two capsules (that’s 720 mg of elemental calcium in a daily dose, AlgaeCal lists the minerals in the elemental form on the supplement facts label. Therefore, AlgaeCal Plus contains 360 mg of elemental calcium in two capsules (that’s 720 mg of elemental calcium in a daily dose, 4 capsules).

      I have trouble swallowing pills. How big are the capsules? Is it OK to open the capsules and mix it with food/beverages?

      AlgaeCal Plus, AlgaeCal Basic, and Strontium Boost all use soft capsules which are ¾” long and easy to swallow. If you do have trouble swallowing them, the two-part capsules can be pulled apart. You can then sprinkle the tasteless powder into your favorite drinks and food. We recommend semi-solid foods such as smoothies, applesauce or yogurt and avoiding hot drinks as temperatures above 120 degrees Fahrenheit as it may reduce the potency of the vitamins C, D, and K2. Please note that the AlgaeCal powder is only partially water soluble due to the many natural minerals and therefore does not dissolve completely in liquid.

      Does AlgaeCal Plus cause side effects such as deposits in kidneys or arteries?

      Unlike traditional, rock-derived calcium supplements, AlgaeCal has no adverse side effects such as kidney stones or arterial calcification. AlgaeCal is a natural, plant-sourced calcium that is easy for your body to absorb. It’s similar to calcium you get from eating vegetables such as broccoli, kale and peas. Some studies have shown that calcium from food sources does not increase soft tissue calcification because foods that naturally contain calcium also supply other minerals, which helps transfer the calcium directly into your bones rather than soft tissues like arteries, kidneys and eyes. Additional magnesium, boron, vitamin K2 and vitamin D3 are added into AlgaeCal Plus to optimize absorption and transport to the bone rather than soft tissues. All these factors translate to efficient absorption and placement into bone tissue. AlgaeCal is also much safer for you because it is more effective at a lower dose. At 720 mg per day of calcium, AlgaeCal Plus is increasing bone density in adults. Compare that to regular calcium supplements that have been studied at 1200 mg per day – and only slow bone loss.

      Does AlgaeCal Plus cause constipation, gas or bloating?

      The vast majority of people who experience gastrointestinal side effects from regular calcium supplements have not experienced any adverse side effects from AlgaeCal. These stomach troubles usually derive from consuming rock-source calcium, which our bodies are not designed to digest. Plant calcium contains a variety of balancing minerals including magnesium, which make it more easily digested. We recommend that you split your daily dose into breakfast and dinner time. Taking AlgaeCal with food increases absorption and reduces chances of any gastrointestinal issues.

      I am petite, so do I need a full dose?

      The recommended daily dose is the same for each individual no matter their size because it is based on age, not weight. In fact, 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.

      Is AlgaeCal Plus tested for contaminants? Does AlgaeCal contain Lead and other Heavy Metals?

      Great question! Actually, lead is a natural mineral like calcium or magnesium which is found in the earth, air and water. So every vegetable that grows in the soil or water has normal amounts of lead in it – the marine algae in AlgaeCal is no exception. Luckily, our bodies easily clear normal amounts of lead daily through urine, feces, and sweat.

      Every batch of AlgaeCal powder is tested by a third party laboratory for microbial activity, heavy metals, mineral content and more. The final product is made in an FDA-inspected GMP (Good Manufacturing Practice) plant where the highest standards are kept.

      AlgaeCal has FDA registration and Health Canada approvals. It has been on the market for 20 years and has 3 clinical studies and a toxicology study showing extraordinary safety!

      Can I take AlgaeCal Plus if I am on bone medications?

      Absolutely. All bone drugs require calcium supplementation to supply the needed calcium for bone building – and AlgaeCal Plus is the highest quality calcium available.

      Please consult your health care provider, before making any healthcare decisions or for guidance about a specific medical condition.

      Can I take AlgaeCal Plus with my prescription medication?

      As a general rule of thumb, it is best to separate any prescription medication by at least 2-3 hoursfrom when you take AlgaeCal Plus or Strontium Boost. This will help limit any potentialinteractions and ensure you receive maximum absorption from both your medications andsupplements. However, some medications are recommended 3-4 hours apart. Please confirm withyour doctor for your unique case. lf you happen to be on an older anticoagulant prescription drug(blood thinner), vitamin K2 is not recommended. However, there are two newer types ofanticoagulant drugs on the market called the XA inhibitors and the Direct Thrombin Inhibitors. Askyour doctor about switching to one of these newer anticoagulants as the older ones aredetrimental to your bone health - as they completely block the usage of vitamin K2 (the olderanticoagulants use the same pathway of absorption as vitamin K2 so they cancel each other out).The newer types of anticoagulant don't interact with vitamin K2 as they use different pathways forabsorption in your body. As an extra precaution, please confirm any supplement or medicationinteraction with your doctor or physician before use.

      Should I be concerned with the iodine level if I have a thyroid issue?

      AlgaeCal does contain a minute amount of iodine – only 160 mcg of iodine per daily serving of AlgaeCal Plus. If in doubt, please discuss with your doctor whether the amounts in AlgaeCal are appropriate for you. For best results, we recommend that you separate your thyroid medication by at least 4 hours from when you take AlgaeCal or Strontium Boost.

      Can I take AlgaeCal Plus if I have a shellfish allergy?

      AlgaeCal Plus does not contain any shellfish – only calcium, minerals from organic algae and added vitamins. Many of our customers have shellfish allergies and take AlgaeCal safely with no adverse reactions. That being said, for any severe allergies we do advise consulting with your doctor/allergist for their best recommendation.

      Is AlgaeCal FDA approved?

      The US Food and Drug Administration (FDA) only approves medications. Since AlgaeCal is a completely natural supplement, it’s simply not possible for AlgaeCal to have FDA approval. In saying that, AlgaeCalisregistered with the FDA under GRAS status (Generally Recognized as Safe). GRAS status means a food ingredient is deemed safe by a qualified panel of experts.

      Will AlgaeCal Plus help with osteoarthritis?

      Anecdotal evidence suggests AlgaeCal Plus may help reduce pain and stiffness, while improvingrange of motion. Boron, one of AlgaeCal Plus's key ingredients, has also been shown to decreaseinflammation in osteoarthritis. Although many people suffering from osteoarthritis have reportedrelief with the AlgaeCal program, our published and peer-reviewed studies found here have beenconducted to measure increases in bone density, specifically. There have not been any peer-reviewed studies conducted on AlgaeCal Plus and osteoarthritis. We recommend targetingarthritic inflammation through exercise, sleep, an anti-inflammatory diet, and our very own naturalTriple Power Fish Oil! Triple Power's formulation provides anti-inflammatory and antioxidantingredients, shown to help manage joint pain and stiffness.

      Is AlgaeCal Plus gluten-free / soy-free?

      AlgaeCal Plus is soy-free, gluten-free, dairy-free and non-GMO.

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