Instalab
New Chapter

Bone Strength Take Care by New Chapter

180 tablets · 60-day supply
Comprehensive Bone Support with Calcium, Vitamin D, and Magnesium
$XX.XX$98.99retail
20% below MSRP3rd-party tested for purity & potencyFree shipping $50+
VegetarianKosherGluten FreeArtificial Color FreeArtificial Flavor Free

New Chapter Bone Strength Take Care overview

If your DEXA scan shows low bone density or your diet is light on dairy and calcium-rich greens, this plant-based calcium is a practical way to fill the gap. It suits adults tracking Vitamin D, 25-Hydroxy who sit in the lower part of the normal range and want maintenance, not high-dose repletion. It also fits post-menopausal women, smaller-framed adults, and vegans who avoid fish bones and dairy. If you already take high-calcium antacids or get ample calcium from food, you may not need this much.

This formula uses algae calcium from Lithothamnion, a mineral-rich red marine algae that brings calcium with natural magnesium and trace minerals. Vitamin D3 (the form your skin makes from sun) increases calcium absorption from the gut. Vitamin K2 as MK-7 activates osteocalcin (the protein that locks calcium into bone) and matrix Gla protein (a protein that helps keep calcium out of arteries). Compared with rock calcium like carbonate, algae-derived calcium is often gentler on digestion while achieving comparable calcium delivery.

Take three tablets daily with food, ideally split across meals for steadier absorption. Many people do two with breakfast and one with dinner. Separate from iron, zinc, or a multivitamin with iron by at least two hours. Do not take within four hours of levothyroxine or within two hours of tetracycline or quinolone antibiotics. The included 1,000 IU of D3 is a maintenance dose; if your Vitamin D, 25-Hydroxy is low, replete with higher D3 temporarily under clinician guidance.

Skip this or get personalized guidance if you have a history of high calcium, recurrent kidney stones, sarcoidosis, or chronic kidney disease. If you use a thiazide diuretic (chlorthalidone, hydrochlorothiazide), extra calcium can push levels higher; monitor serum Calcium and PTH (parathyroid hormone, the signal that pulls calcium from bone). On warfarin, avoid added vitamin K; discuss alternatives. Strontium in this blend can artifactually raise DEXA readings, so tell your imaging center or pause it before a scan.

Frequently asked questions

How long does calcium with vitamin D3 and K2 take to work?

Calcium effects on bone markers show in 8–12 weeks, while measurable DEXA changes take 12–24 months. Consistency, adequate protein, and resistance training matter as much as the supplement.

Is algae calcium better than calcium carbonate?

They deliver similar elemental calcium. Algae calcium comes with natural magnesium and trace minerals and is often easier on digestion. Clinical outcomes depend more on total calcium, vitamin D status, and adherence.

Can I take calcium with levothyroxine or iron?

No. Calcium binds both and reduces absorption. Take levothyroxine at least 4 hours apart, and iron or iron-containing multis at least 2 hours apart from calcium.

Does vitamin K2 interact with blood thinners like warfarin?

Yes. Vitamin K (K1 and K2) opposes warfarin’s effect. If you take warfarin, do not add vitamin K without your prescriber’s guidance. Direct oral anticoagulants are not vitamin K–dependent.

Will this help if my Vitamin D, 25-Hydroxy is low?

The included 1,000 IU D3 is a maintenance dose. For established deficiency, clinicians usually replete with higher D3 short term, then step down to maintenance like this once levels recover.

Can calcium cause constipation or upset stomach?

It can. Taking doses with meals, splitting across the day, and staying hydrated reduce this. Algae-derived calcium is often better tolerated than some rock-based forms.

Does strontium in this supplement affect bone density tests?

Yes. Strontium can make DEXA results look higher than true bone density. Tell your imaging center or pause use several weeks before a scan, per your clinician’s advice.

How to take it & ingredients

Suggested use: Take three tablets daily with food.
Active ingredients
3 tablets per serving · 60 servings
Vitamin D3
Cholecalciferol from ferment media
25 mcg, 1000 IU
Vitamin K1
Phylloquinone from ferment media
35 mcg
Vitamin K2
Menaquinone-7
45 mcg
Organic Algae Lithothamnion
Lithothamnion calcareum and Lithothamnion corallioides
974.51 mg
Calcium
From organic algae Lithothamnion
905 mg
Magnesium
From organic algae Lithothamnion
62 mg
Strontium
From organic algae Lithothamnion
5.5 mg
Silica
From organic algae Lithothamnion
2 mg
Vanadium
From organic algae Lithothamnion
14 mcg
Other ingredients: Organic barley grass powder, Organic gum acacia, Ferment media (organic soy flour, organic Saccharomyces cerevisiae, organic alfalfa powder, papain (deactivated), bromelain (deactivated), Lactobacillus acidophilus, Bifidobacterium bifidum, Lactobacillus rhamnosus), Organic coating (organic maltodextrin, organic sunflower lecithin, organic palm oil, organic guar gum), Silica