AlgaeCal Plus by AlgaeCal Inc.

If your DEXA scan (the X-ray test for bone density) shows osteopenia, or you are postmenopausal with low dietary calcium, this calcium supplement for bone density is a practical fit. It also suits adults avoiding dairy, long-term steroid users, and those whose Vitamin D, 25-Hydroxy is in the lower range. The formula pairs calcium with vitamin D3, vitamin K2, magnesium, boron, and vitamin C, which is the combination most clinicians reach for when food alone is not closing the gap.

Algae-derived calcium delivers calcium with a natural trace-mineral matrix, which many patients find gentler than chalky salts. Vitamin D3 improves calcium absorption from the gut and helps lower parathyroid hormone (the signal that pulls calcium from bone). Vitamin K2 activates osteocalcin (the protein that locks calcium into bone) and matrix Gla protein (which helps keep calcium out of arteries). Magnesium supports bone matrix formation, boron helps the body use vitamin D, and vitamin C supports collagen in bone.

Take two capsules with breakfast and two with dinner, with food as directed. Splitting calcium improves absorption and reduces stomach upset. Keep a 2–4 hour gap from iron, levothyroxine, and certain antibiotics to avoid binding in the gut. Most people reassess with a DEXA scan yearly and recheck Vitamin D, 25-Hydroxy within 8–12 weeks. If your calcium intake from food is already high, discuss whether you need the full daily amount.

Skip or get clinician guidance if you have a history of high calcium, recurrent kidney stones, primary hyperparathyroidism, sarcoidosis, or advanced chronic kidney disease. Vitamin K2 can interfere with warfarin; do not combine without medical supervision. Separate calcium by at least two hours from tetracycline or fluoroquinolone antibiotics and morning thyroid medication. Thiazide diuretics can raise blood calcium, so periodic blood calcium and PTH checks are sensible if you use them.