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3A Calcium (AAACa) is an ionic calcium from Japan comprised of calcium oxide and calcium hydroxide. AAACa is also potentiated with HAI™ (heated algal ingredient), an amino acid complex from super-heated hijiki seaweed. Tiny amounts of HAI have been scientifically shown to significantly increase calcium absorption. In one study, the improvement was up to 4X greater.
These two natural ingredients are only available in 3A Calcium.* 3A Calcium provides superior calcium absorption and parathyroid modulation.* Backed by 30 years of clinical research and 30 published, scientific articles, 3A Calcium has shown a consistent, significant increase in bone density.* Each full daily serving provides:
• 1,000 mg AAACa Calcium
• 1,000 IU Vitamin D₃
• 600 mg Magnesium
• 122 mg Full spectrum of bone-supporting cofactors, including Vitamin K2*
• <1 mg HAI
Suggested Use: Take 3 capsules in the morning and 3 capsules at bedtime, preferably with food.
Serving Size: 3 Capsules
Amount Per Serving
Vitamin C ... 50mg
(as ascorbic acid)
Vitamin D3 ... 12.5mcg
(cholecalciferol)
Calcium ...500mg
(as calcium hydroxide & calcium oxide)
Vitamin K2 ... 50mcg
(menaquinone)
Magnesium ...300mg
(magnesium oxide and magnesium citrate)
Zinc ... 6mg
(as monomethionate)
Copper ... 1mg
(as copper citrate)
Manganese ... 2mg
(as manganese sulfate)
HAI Amino Acid Extract ... < 1mg
(from sea algae)
Boron ... 2mg*
(as amino acid chelate)
Other Ingredients: Gelatin‚ Citric Acid‚ Microcrystalline Ceullose, and Magnesium Vegetable Stearate.
Consult a health professional first if you are pregnant‚ nursing or have chronic granulomatous disorders (CGD).
Store in a cool‚ dry place.
Keep out of reach of children.
Do not use if bottle seal is broken or missing.

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