Coral Complex: What's Actually in Our Coral Calcium Supplement
Coral Complex is our coral calcium supplement: 900 mg of above-sea coral calcium, 1,200 IU of vitamin D3, and 168 mg of magnesium in three capsules a day. It also carries 73 trace minerals most calcium supplements skip entirely. Here's what's actually in the bottle, and the claim we pulled off our own label this year.
What's Actually in Every Serving
Nutrient | Amount (3 capsules) | % Daily Value |
|---|---|---|
Vitamin C | 15 mg | 17% |
Vitamin D3 | 30 mcg (1,200 IU) | 150% |
Calcium (from coral minerals) | 900 mg | 69% |
Magnesium | 168 mg | 40% |
Mineral blend (malic acid, betaine HCl, 72 trace minerals | 48 mg | * |
*Daily Value not established for the trace mineral blend.
The trace minerals include boron, chromium, copper, iodine, iron, manganese, phosphorus, potassium, selenium, silicon, sulfur, and zinc, among others. None of them are dosed high enough to be the star of the label. They're there because coral calcium naturally carries them, not because we added them one by one.
Why Calcium Needs Vitamin D3 and Magnesium in the Same Bottle
Calcium by itself is half a strategy. Your gut needs vitamin D3 to pull calcium out of what you eat and into your bloodstream, and your body needs magnesium to convert vitamin D into the form it can actually use. Skip either one, and a chunk of the calcium you're taking passes through undigested.
That's the reasoning behind pairing all three in Coral Complex, not a single-nutrient approach. The National Institutes of Health's Office of Dietary Supplements lays out the same relationship: vitamin D governs calcium absorption, and magnesium is required to activate it. We didn't invent that mechanism. We just built a formula around it.

Where the Calcium Actually Comes From
Coral Complex uses above-sea coral calcium, harvested from fossilized coral deposits that formed before the industrial revolution. It isn't pulled from living reef, and the harvest doesn't touch the ocean or active reef systems at all. The calcium has simply been sitting above the waterline for a very long time, carrying the same trace minerals it picked up while it was part of a living reef centuries ago.
That's also where the 73 trace minerals come from. They're not blended in during manufacturing. They're part of the source material.
What to Know Before You Take It
Coral Complex is formulated for adults. The label calls for three capsules a day, ideally with food. Some reviewers take all three at once, others split them across meals to go easier on the stomach.
What Our Customers Say After Years of Taking It
"Being older, I take coral calcium for my health and my bones. This supplement is very easy on my stomach," wrote Debra G. in a verified Coral Complex review on coraltoothpaste.com.
Clint D. left a shorter note: "Love this calcium and trace mineral supplement! My nails grow longer/quicker when eating 3 caps a day!" And Diane P., who's taken it for years, said simply, "I take it mainly to keep my D3 levels to where they should be."
At the end of the day, this is the brass tacks: the supplement really works.
Sources:
- NIH Office of Dietary Supplements, Calcium Fact Sheet for Health Professionals: https://ods.od.gov/factsheets/Calcium-HealthProfessional/
- NIH Office of Dietary Supplements, Vitamin D Fact Sheet for Health Professionals: https://ods.od.gov/factsheets/VitaminD-HealthProfessional/
- NIH Office of Dietary Supplements, Magnesium Fact Sheet for Health Professionals: https://ods.od.gov/factsheets/Magnesium-HealthProfessional/
- NIH National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bone Health for Life: https://www.bones.nih.gov/health-info/bone/bone-health/nutrition
- FTC, Marketers of Coral Calcium Prohibited from Disease and Absorption Claims (2004): https://www.ftc.gov/news-events/news/press-releases/2004/01/marketers-coral-calcium-product-are-prohibited-making-disease-treatment-cure-claims-advertising