🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 67% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

1.5 tsp Serving Size
45 Servings
Other Combinations Product Type
67% Evidence Coverage

Supplement Facts — Evidence Check

5 mcg (25% DV)
✅ Within RDA (0.3× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.005mg UL 0.1mg
Calcium
400 mg (31% DV)
400 mg (95% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 400mg

Other Ingredients

None

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (61% of products) Approved Health (4% of products)

Target Groups

Adult (18 - 50 Years) Kosher Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested Usage: Mix 1 1/2 level teaspoons of powder into at least 8 oz. of cold water or clear liquid. Add powder slowly while stirring. Take once daily with a meal. Pure calcium and magnesium citrate powders can increase the temperature of liquids upon contact; therefore, the recommended serving must be mixed into at least 8 oz. of cold liquid to neutralize this reaction prior to ingestion.

⚠️ Warnings & Precautions

Caution: This product must be dissolved into at least 8 oz. of cold water or clear liquid before consuming. Do not breathe powder and avoid contact with skin, eyes, and clothing. For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

🧪 Formulation Notes

NOW Calcium & Magnesium Citrate Powder with Vitamin D3 is an optimal bone structure support formula designed by NOW's certified nutritionists. It contains key nutrients that play essential roles in bone metabolism. The citrate forms of Calcium and Magnesium are highly absorbable and support not only strong bones and teeth but muscle and nerve function as well. Vitamin D3 is included to complement Calcium and Magnesium and its role in the maintenance of mineral homeostasis and bone structure.

Non-GMO

Triangle K

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients

NOW Calcium Citrate and Magnesium Citrate are fully reacted mineral supplements.

Additional Information

Supports bone health 1:1 mineral ratio Enhanced mixability

Non-GMO

Triangle K

Minerals Family owned since 1968.

Natural color variation may occur in this product. This product is sold by weight not volume.

Store in a cool, dry place after opening.

GMP Quality Assured

Product Details

UPC / SKU 7 33739 01243 2
DSLD Entry Date 2019-07-24
Product Type Other Combinations
Form Powder
Brand NOW
DSLD ID 204955
Data Updated 2026-04-11

Research Evidence

11 Research Sources
52 Avg Quality Score
7 Rct
4 Meta Analysis
B Citrate salts for preventing and treating calcium containing kidney stones in adults
Meta Analysis The Cochrane database of systematic reviews 2015
B Effect of potassium citrate on bone density, microarchitecture, and fracture risk in healthy older adults without osteoporosis: a randomized controlled trial
Rct The Journal of clinical endocrinology and metabolism 2013
B Regional Citrate Anticoagulation or Heparin Anticoagulation for Renal Replacement Therapy in Patients With Liver Failure: A Systematic Review and Meta-Analysis
Meta Analysis Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis 2023
B Effect of potassium citrate supplement on stone recurrence before or after lithotripsy: systematic review and meta-analysis
Meta Analysis Urolithiasis 2017
C Effect of Regional Citrate Anticoagulation vs Systemic Heparin Anticoagulation During Continuous Kidney Replacement Therapy on Dialysis Filter Life Span and Mortality Among Critically Ill Patients With Acute Kidney Injury: A Randomized Clinical Trial.
Rct JAMA
C Systematic review and meta-analysis: sodium picosulfate/magnesium citrate vs. polyethylene glycol for colonoscopy preparation
Meta Analysis European journal of clinical pharmacology 2016
C Potassium citrate prevents increased urine calcium excretion and bone resorption induced by a high sodium chloride diet
Rct The Journal of clinical endocrinology and metabolism 2002
C Magnesium citrate supplementation decreased blood pressure and HbA1c in normomagnesemic subjects with metabolic syndrome: a 12-week, placebo-controlled, double-blinded pilot trial
Rct Magnesium research 2021
C The efficacy of vitamin D combined with clomiphene citrate in ovulation induction in overweight women with polycystic ovary syndrome: a double blind, randomized clinical trial.
Rct Endocrine
C Impact of Clomiphene Citrate on the Steroid Profile in Dysmetabolic Men with Low Testosterone Levels.
Rct Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme
View all evidence for Magnesium Citrate →

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