BioStacks
Source Naturals

Ultra-Cal 1000

3 Capsules × 2/day · 20 servings

iHerbAmazon

Best for

DentalBone & JointImmune

Ingredients (14)

Vitamin D3

100%

Dose/day

1040 IU

Target

1000–5000 IU

Form

Premium

Magnesium

100%

Dose/day

500 mg

Target

100–400 mg

Form

Standard

Calcium

100%

Dose/day

1000 mg

Target

200–600 mg

Form

Standard

Phosphorus

100%

Dose/day

400 mg

Target

100–500 mg

Form

Standard

Vitamin B12

80%

Dose/day

200 mcg

Target

250–5000 mcg

Form

Premium

Other Ingredients (3)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Take it anytime

No evidence a formula this broad works better at any particular hour. Take it with a meal containing fat — the vitamins D and K in it absorb poorly without one.

With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron
Split into 2 doses across the day

On the label

3 capsules twice daily.

General guidance based on the ingredients, not a substitute for the label or your doctor.

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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