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Cal-Mag Stress Formula

product on market Tablet or Pill NOW Safety: 92/100
92/100

This product looks safe

  • Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
  • Folate: 1360mg is 1360.0× the Tolerable Upper Intake Level (1.0mg)
  • Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)
  • 71% of ingredients have research evidence
F Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

The formula contains B vitamins and vitamin C, which are supported by strong evidence for supporting energy metabolism and nervous system function. These nutrients play key roles in cellular processes and stress response. The overall safety profile is high, though evidence coverage for this specific combination is limited.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)

Folate: 1360mg is 1360.0× the Tolerable Upper Intake Level (1.0mg)

Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)

Label

Product Label

Label for Cal-Mag Stress Formula
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Tablet(s)
Serving Size
50
Servings
Other Combinations
Product Type
71%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
360 mg (400% DV)
10 mg (833% DV)
8.3× RDA — above typical dose 76 studies (A:0, B:33)
5 mg (385% DV)
3.8× RDA — above typical dose 13 studies (A:0, B:1)
40 mg (250% DV)
Exceeds UL by 1.1× (UL: 35 mg) 196 studies (A:5, B:63)
5 mg (294% DV)
3.8× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
1360 mcg DFE (340% DV)
Exceeds UL by 1360.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
20 mcg (833% DV)
8.3× RDA — above typical dose 139 studies (A:1, B:44)
300 mcg (1000% DV)
10.0× RDA — above typical dose 27 studies (A:0, B:11)
20 mg (400% DV)
4.0× RDA — above typical dose 2 studies — no high-quality reviews
20 mg (4% DV)
Market median: 125.0mg (294 products) 38 studies (A:1, B:7)
Calcium
1 Gram(s) (77% DV)
500 mg (119% DV)
Exceeds UL by 1.4× (UL: 350 mg) 316 studies (A:8, B:159)
20 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
10 mg
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews

Other Ingredients

Hydroxypropyl Cellulose Vegetarian Coating Stearic Acid Croscarmellose Sodium Silicon Dioxide Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested usage: Take 2 tablets daily with food. Can be taken in divided doses.

Warnings & Precautions

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

Caution: For adults only. Keep out of reach of children.

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

This product contains biotin which may interfere with blood test results. Go to nowfoods.com/biotinlab for details.

Formulation Notes

Cal-Mag Stress Formula is a mix of calcium, magnesium, vitamin C, and a full range of B-vitamins which aid in the production of energy. Vitamin C, in addition to its function as an antioxidant, helps to support a normal adrenal response. This product also provides the daily recommended levels of calcium and magnesium, both of which are necessary for skeletal health. All together NOW Cal-Mag Stress Formula has essential minerals and nutrients required for optimal daily functioning.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

Natural color variation may occur in this product.

Crescent H (Halal)

Cal-Mag Stress Formula with B-complex and vitamin C

Vegetarian/Vegan

Triangle K (Kosher)

Made and quality tested in the USA with globally sourced ingredients.

Additional Information

Store in a cool, dry place after opening.

Crescent H (Halal) GMP Quality Assured

Triangle K (Kosher)

Minerals Family owned since 1968.

Metadata

Product Details

UPC / SKU7 33739 01275 3
DSLD Entry Date2024-05-23
Product TypeOther Combinations
FormTablet or Pill
BrandNOW
DSLD ID313649
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
View all evidence for Vitamin C →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.