Excess calcium from supplements raises kidney stone risk and blocks mineral absorption. UL: 2,500 mg/day (under 50), 2,000 mg/day (over 50). Check your dose.
Very high calcium may increase kidney stone risk and interfere with absorption of other minerals.
| Standard | RDA | Upper Limit (UL) |
|---|---|---|
| United States | 1000 mg | 2500 mg |
| European Union | 1000 mg | 2500 mg |
| Australia | 1000 mg | 2500 mg |
| China | 800 mg | 2000 mg |
| Japan | 700 mg | 2500 mg |
RDA = Recommended Dietary Allowance. UL = Tolerable Upper Intake Level. “Not established” does not mean unlimited intake is safe.
Yes. Excess calcium from supplements (not food) increases kidney stone risk. The UL is 2,500 mg/day for adults under 50 and 2,000 mg/day for those over 50. Getting calcium from food sources does not carry the same stone risk.
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