Nutrient quality
Well-regarded calcium, vitamin D, and boron forms support the intended use. A large calcium serving and weak secondary additions reduce dose efficiency.
.Analysis
Calcium citrate is a well-absorbed form that is less dependent on stomach acid than carbonate. Vitamin D3 at 20 mcg supports calcium absorption, and 2.4 mg boron adds a relevant mineral cofactor.
The 800 mg calcium serving exceeds the amount typically absorbed efficiently at one time. Horsetail and spirulina are only 40 mg each, with no silica yield stated.
Four mini-tablets allow the serving to be divided across meals, which improves practical use. The formula suits focused bone support but lacks vitamin K2 and meaningful magnesium.
Pros
Provides 800 mg calcium citrate Includes vitamin D3 Adds boron glycinate Mini-tablets can be divided
Cons
Calcium is high for one sitting Lacks vitamin K2 Magnesium is absent Horsetail and spirulina are lightly dosed
Warnings
High calcium intake may cause constipation or stomach discomfort in sensitive users. Calcium can reduce absorption of levothyroxine, iron, and some antibiotics when taken too close together. Users with a history of calcium-containing kidney stones should review the 800 mg supplemental serving with a clinician.
