ALGAECAL Organic red algae calcium supplement for bone density

Each serving of AlgaeCal Plus provides 360 mg of elemental calcium in two capsules. That’s 720 mg per day when you take the full four-capsule daily dose.

This is the exact amount used in clinical studies that showed measurable increases in bone mineral density.

You don’t need more calcium, you need the right kind of calcium. Unlike ordinary rock-based calcium (from limestone or marble), AlgaeCal Plus delivers plant-based, whole-food calcium with 12 essential bone-building minerals + vitamins C,D,& K. These 16 nutrients are easy for your body to absorb and—most importantly—are clinically supported to increase bone density, something other calcium supplements simply can’t do.

AlgaeCal Plus comes in size zero soft vegetarian capsules which are easy to swallow.

However, if swallowing capsules is difficult, you can gently pull them apart and sprinkle the tasteless powder into food or drinks. Semi-solid foods such as smoothies, applesauce, or yogurt work best.

Avoid mixing the powder into hot liquids above 120°F (49°C), as high temperatures can reduce the potency of vitamins C, D, and K2.

Because the powder contains a wide range of natural minerals, it is only partially water-soluble, so it won’t completely dissolve in liquid.

No. AlgaeCal Plus is gentle on the stomach. The digestive discomfort many people experience with regular calcium supplements comes from their rock-based source (limestone or marble), which the human body struggles to break down.

AlgaeCal Plus is different. It provides plant-based calcium naturally balanced with magnesium and other supportive minerals, making it easy to digest and absorb, without the constipation, gas, or bloating common to traditional calcium.

For best results, split your daily dose: take two capsules with breakfast and two with dinner. Taking AlgaeCal Plus with food further improves absorption and helps keep your digestive system comfortable.

Yes. Even if you’re small-framed, your bones require the same essential nutrients to stay strong.

In fact, being petite can actually increase your risk of bone loss because you start with less skeletal mass. So giving your body the full daily dose of AlgaeCal Plus is especially important to help protect and rebuild your bones.

Yes. All prescription bone medications require adequate calcium to give your body the raw materials it needs to build new bone. And AlgaeCal Plus provides a clinically supported, plant-based calcium that works beautifully alongside these treatments.

That said, it’s always important to check with your healthcare provider before making any changes to your supplement routine or medical care, especially if you’re currently taking prescription medications.

Yes. But timing matters. To avoid any potential interactions and to ensure the best absorption of both your supplements and medications, it’s best to take AlgaeCal Plus at least 2–3 hours apart from prescription drugs. Some medications may require a 3–4 hour separation, so always check with your doctor or pharmacist for your specific situation.

Special note for blood thinners:

If you are taking an older anticoagulant (such as warfarin or Coumadin), vitamin K2 is not recommended because these drugs use the same absorption pathway and can block each other. Newer anticoagulants—called Factor Xa inhibitors (e.g., apixaban, rivaroxaban) and Direct Thrombin inhibitors (e.g., dabigatran)—do not interfere with vitamin K2 and may be safer for your bones. Ask your doctor if one of these newer options is appropriate for you.

As always, consult your healthcare provider before adding any supplement or making changes to your medication routine.

Many doctors, especially those open to natural treatments, are already familiar with AlgaeCal. But every healthcare provider is different, and it’s always best to give them the full details yourself.

To make it easy, we’ve created a “Take It to Your Doctor” information sheet that outlines the clinical research, ingredients, and dosing. Print it out or share it at your next appointment so your doctor can give you the best, personalized guidance for your bone health.

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.

Yes. AlgaeCal Plus contains absolutely no shellfish or shellfish-derived ingredients.

And many customers with shellfish allergies take AlgaeCal Plus safely with no adverse reactions. That said, if you have a severe allergy, it’s always best to consult your doctor or allergist before starting any new supplement.

The U.S. Food and Drug Administration (FDA) does not “approve” dietary supplements. It only approves prescription medications. Because AlgaeCal Plus is a natural supplement, it isn’t eligible for FDA approval.

However, AlgaeCal is registered with the FDA and holds GRAS status (Generally Recognized as Safe). GRAS means a qualified panel of independent experts has reviewed the science and determined the ingredient is safe for its intended use.

No. AlgaeCal Plus is vegetarian. But not vegan. The calcium and other minerals come from plant-based marine algae, but the vitamin D3 is derived from lanolin (the natural wax found in sheep’s wool) which is an animal by-product.

Lanolin is sustainably harvested and does not harm the animals, but because it originates from an animal source, AlgaeCal Plus is classified as vegetarian, not vegan.