Why algae calcium instead of calcium carbonate or calcium citrate?
Algas calcareas — the marine red algae used in CalDveg — is structurally different from synthetic calcium sources. It's porous (high surface area for absorption), naturally contains 72+ trace minerals including magnesium, manganese, zinc, and boron, and aligns with the plant-source positioning of the formulation. Calcium carbonate (from limestone or oyster shells) is cheaper but has lower absorption and provides no other minerals. Calcium citrate is synthetic and slightly better-absorbed than carbonate but also provides only isolated calcium. Algas calcareas delivers calcium in the natural mineral matrix that bone metabolism actually uses — the way calcium exists in food sources, rather than as an isolated synthetic mineral.
Why are D3, K2-7, and magnesium in a calcium product?
Because calcium alone is incomplete — and increasingly understood to be problematic in isolation. Calcium supplementation without these co-factors can deposit in soft tissue (including arterial walls) rather than bone. The D3 + K2 + Magnesium triad addresses this: D3 increases calcium absorption from the gut; K2-7 activates the proteins (osteocalcin and matrix-Gla protein) that direct calcium into bone and keep it out of arteries; magnesium is required for both D3 activation and calcium metabolism. Multiple studies have raised cardiovascular concerns about isolated high-dose calcium supplementation — the full mineral context this product provides addresses those concerns directly.
Why only 500mg calcium (50% RDA) — isn't that too low?
Intentional. Most adults get 300–500mg of calcium from their daily diet (dairy if consumed, leafy greens, sesame, ragi, almonds, fortified plant milks). Supplementation is meant to fill the gap, not replace dietary calcium. The 500mg from this product, combined with 300–500mg from food, reaches the 800–1000mg total daily intake the Indian RDA targets. High-dose calcium supplementation (>1000mg/day from supplements alone) has been associated with cardiovascular concerns in some populations — the 500mg dose with K2 and D3 is the safer and more evidence-based formulation. For adults with documented severe deficiency or post-fracture recovery, your physician may recommend a higher therapeutic dose; for daily maintenance, 500mg is calibrated correctly.
Why is the Vitamin C from amla instead of synthetic ascorbic acid?
Amla (Indian gooseberry, Emblica officinalis) is one of the highest natural Vitamin C sources in traditional Ayurvedic medicine. The 160mg amla extract delivers 80mg Vitamin C (100% RDA) in a whole-food matrix that includes natural polyphenols and bioflavonoids — co-factors that support Vitamin C function. Vitamin C matters in bone health specifically for collagen synthesis: collagen is the protein matrix that bone minerals deposit onto. Without adequate Vitamin C, the bone-mineral matrix can't form correctly regardless of calcium intake. Choosing amla over synthetic ascorbic acid is a formulation decision that aligns with the whole-food register of the product.
Why do I have to take 3 capsules across the day instead of one larger dose?
Because the body can absorb only approximately 500mg of calcium at a single intake — beyond that threshold, absorption efficiency drops sharply. Splitting the daily dose into 3 capsules of ~167mg each across breakfast, lunch, and dinner ensures all calcium is efficiently absorbed. This is a meaningful formulation choice that many "high-dose calcium" products ignore — they put 1000mg+ in one tablet and lose roughly half to non-absorption. The 3-capsule protocol takes slightly more daily discipline but delivers significantly more usable calcium to your body.
How does CalDveg compare to D3 + K2-7?
D3 + K2-7 is for daily D3 and K2 maintenance without the calcium load — appropriate for adults whose diet covers calcium needs but who want to support D3 status and K2-driven calcium direction. CalDveg is for adults specifically targeting bone health, with the full bone-mineral matrix (calcium, magnesium, D3, K2, Vitamin C) in one product. The D3 (600 IU) and K2-7 (55mcg) doses are the same; CalDveg adds 500mg calcium, 94mg magnesium, and 80mg amla Vitamin C for bone-specific support. Choose D3 + K2-7 for maintenance D3+K2 only; choose CalDveg if bone health is your specific target.
Is this product appropriate for post-menopausal women?
Yes — and post-menopausal women are one of the populations CalDveg is most relevant for. Bone density loss accelerates after menopause due to declining oestrogen, and the K2 + D3 + magnesium co-factors are particularly important to ensure calcium supports bone rather than depositing in arterial tissue. If you have a documented osteoporosis diagnosis, your physician may prescribe bone-active medications (bisphosphonates, denosumab) alongside calcium supplementation; CalDveg is appropriate as the supplemental component of that protocol. Discuss with your physician for the right combined plan.
Can I take this during pregnancy and breastfeeding?
Generally yes, but review with your gynaecologist. Calcium needs rise during pregnancy (to 1200mg/day) and lactation (to 1200mg/day). The 500mg dose is appropriate supplemental contribution, but most prenatal vitamins already contain calcium — confirm total daily intake to avoid exceeding the upper limit. The D3 and K2 are appropriate and beneficial during pregnancy. The amla Vitamin C is appropriate. The magnesium content is supportive but you may need additional standalone magnesium for adequate intake during pregnancy.
I have a history of kidney stones — should I avoid calcium supplements?
Not necessarily — and this is counterintuitive. Calcium taken with meals actually reduces the risk of calcium oxalate kidney stones (the most common type) by binding to dietary oxalate in the gut and preventing it from reaching the kidneys. Calcium taken between meals, on an empty stomach, can paradoxically increase stone risk. CalDveg's protocol of taking 1 capsule with each meal (breakfast, lunch, dinner) is the lower-risk pattern. That said, if you have a documented history of kidney stones, consult your urologist before starting any calcium supplementation — individual risk factors vary.
Can I take this with my prescription medication?
Several specific timing considerations. Thyroid medication (levothyroxine): calcium significantly reduces absorption — take CalDveg at least 4 hours apart from thyroid medication. Bisphosphonates (osteoporosis medication): calcium reduces absorption — take bisphosphonates 2 hours apart, typically on an empty stomach first thing in the morning with CalDveg later in the day. Antibiotics (tetracyclines, quinolones): calcium reduces absorption — separate by 2 hours. Iron supplements: calcium and iron compete for absorption — separate by 2 hours. Warfarin: K2-7 may affect INR — inform your physician and stay consistent with your supplementation pattern.