StressMaster

product on market Capsule Advanced Nutrition by Zahler 🟢 Safety: 98/100
Brand: Advanced Nutrition by Zahler
🟢 98/100

This product looks safe

  • Folate: 1.33333mg is 1.3× the Tolerable Upper Intake Level (1.0mg)
  • 44% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Folate: 1.33333mg is 1.3× the Tolerable Upper Intake Level (1.0mg)

Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
44% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A
1500 mcg (167% DV)
Vitamin C
750 mcg (833% DV)
134 mg (893% DV)
📊 8.9× RDA — above typical dose (UL: 1000 mg) 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 134mg UL 1000mg
1333.33 mcg (333% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.3× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 1.33333mg UL 1.0mg
450 mg
📊 Market median: 300.0mg (214 products) 📚 23 studies (Tier A: 0, B: 6)
This product: 450mg
400 mg
📊 Market median: 300.0mg (122 products) 📚 22 studies (Tier A: 0, B: 7)
This product: 400mg
Eleuthero root powder
300 mg
Gamma Amino Butyric Acid
250 mg
200 mg
📊 Market median: 250.0mg (60 products) 📚 7 studies (Tier A: 0, B: 1)
This product: 200mg
Chinese Skullcap, Powder
200 mg
Hops flower powder
150 mg
Sarsaparilla root powder
100 mg
100 mg
📊 Market median: 420.0mg (127 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 100mg
100 mg
📊 Market median: 300.0mg (159 products)
Median 300.0mg This product: 100mg
Wood Betony, Powder
100 mg
100 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 100mg

Other Ingredients

Hypromellose Magnesium Stearate

Label Claims — Verification

❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Kosher Dairy Free

Product Information

📋 Directions for Use

Directions: Take 4 capsules daily, preferably 2 capsules twice a day with food, or as directed by a healthcare practitioner.

⚠️ Warnings & Precautions

Keep out of reach of children.

Do not use if safety seal is damaged or missing.

If pregnant, nursing or on medication, consult with your healthcare practitioner.

🧪 Formulation Notes

Relaxation suport formula

Zahler StressMaster is a comprehensive formula including Valerian root, Rhodiola root, Passionflower and more. This formula is designed to support calmness and promote relaxation.

Kosher Pareve Under the strict supervision of Rabbi SH. Stern & the orthodox union

Non-GMO Dairy free Soy free

Vegetarian

Promotes relaxation and calm support Mind & spirit

Additional Information

You may need additional supplements to support a healthy diet; consult your nutritionist for a formula that is right for you or contact us at 877-ASK-ZAHLER (877-275-9245) or ask@zahlers.com.

D (Dairy Kosher) OU (Kosher) This product was manufactured in a GMP certified Facility

Store tightly closed in a cool, dry place.

Made in the USA

Product Details

UPC / SKU 8 48998 08079 2
DSLD Entry Date 2022-02-23
Product Type Other Combinations
Form Capsule
Brand Advanced Nutrition by Zahler
DSLD ID 260326
Data Updated 2026-04-11

Research Evidence

337 Research Sources
54 Avg Quality Score
161 Meta Analysis
68 Systematic Review
51 Rct
48 Clinical Trial
2 Other
2 Regulatory Source
1 Narrative Review
1 Cochrane Review
1 Guideline
1 Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011
PubMed DOI Cochrane
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011
PubMed DOI Cochrane
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011
PubMed DOI
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019
PubMed DOI Cochrane
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016
PubMed DOI Cochrane
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023
PubMed DOI
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019
PubMed DOI
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
View all evidence for Vitamin A →

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