Reference product
Youngroong Safe Calmadi K2 X 3+1, 4-Month Supply, 120g, 4 Pieces
$33.63
Verified Coupang buyer reviews (61) · As of 2026.08
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"High-Scoring Bone Health Formula with Superior Ingredient Transparency"This product received the highest score in Yak Ale's bone health assessment. It provides calcium, magnesium, vitamin D, vitamin K, and polygamma-glutamic acid in a single formula. To improve the low bioavailability of calcium, the product combines citrate calcium and algae-derived calcium in a dual formulation. The manufacturer discloses the country of origin for all ingredients, including calcium, magnesium, and vitamin D. Individual sachet packaging makes it convenient to take. The product has a clean ingredient profile with minimal additives.
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Vitamin C is essential for enhancing white blood cell function and antibody production, playing an important role in protecting your body from infection.

If calcium strengthens the minerals in bone, collagen can create a strong structural framework for bone, working synergistically to help maintain bone density and support fracture prevention.

The B vitamins included in the multivitamin play an important role in the production of neurotransmitters and neuroprotection, and help reduce nerve fatigue.
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