🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 33% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

Have a supplement label? Find it here.

Upload a photo of any supplement label to search our database of 92,312 products.

Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Capsule(s) Serving Size
30 Servings
Botanical Product Type
33% Evidence Coverage

Supplement Facts — Evidence Check

30 mg (188% DV)
✅ 2.1× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 30mg UL 35mg
Proprietary Herbal Blend
1.24 Gram(s)
DL-Phenylalanine
0.03 Gram(s)

Other Ingredients

Vegetarian Capsule organic Brown Rice

Label Claims — Verification

All Other
Structure/Function
All Other (97% of products) Structure/Function (86% of products) Nutrient (36% of products)

Target Groups

Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested Use Take 2 capsules, twice daily, for 1-2 months. Then 2 capsules daily, as needed for maintenance.

⚠️ Warnings & Precautions

CA Residents: Warning: Cancer and reproductive harm www.P65Warnings.CA.GOV Warning: Do not use if tamper proof seal is damaged or missing. US FDA advises that a potential risk of rare, but severe, liver injury may be associated with kava-containing dietary supplements.

Products containing Kava Kava Root are not recommended for use by persons under the age of 18.

If pregnant, nursing or taking a prescription drug, consult a health care professional prior to use.

Do not exceed recommended dose. Excessive use may impair ability to drive or operate heavy equipment. Not recommended for use with alcoholic beverages.

Keep out of reach of children.

For additional warning information, please visit product page on our website.

May contain: Tree nuts (ginkgo)

🧪 Formulation Notes

Curbs the edge

16 whole herbs

Non-GMO product

Vegetarian friendly

3rd party tested

Promotes calm Supports nervous system health

Skullcap & valerian

Additional Information

Crystal Star ESTD 1978

U.S. F.D.A. REG. FACILITY

Product Details

UPC / SKU 7 47889 04330 7
DSLD Entry Date 2021-02-25
Product Type Botanical
Form Capsule
Brand Crystal Star
DSLD ID 243900
Data Updated 2026-04-11

Research Evidence

241 Research Sources
55 Avg Quality Score
113 Meta Analysis
75 Systematic Review
32 Rct
11 Clinical Trial
3 Other
3 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Openfda Safety
A Niacin for primary and secondary prevention of cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017
A Use of high potency statins and rates of admission for acute kidney injury: multicenter, retrospective observational analysis of administrative databases
Meta Analysis BMJ (Clinical research ed.) 2013
A Effect on cardiovascular risk of high density lipoprotein targeted drug treatments niacin, fibrates, and CETP inhibitors: meta-analysis of randomised controlled trials including 117,411 patients
Meta Analysis BMJ (Clinical research ed.) 2014
A A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Meta Analysis Nature medicine 2024
A Meta-analysis and imputation refines the association of 15q25 with smoking quantity
Meta Analysis Nature genetics 2010
A Genome-wide meta-analyses identify multiple loci associated with smoking behavior
Meta Analysis Nature genetics 2010
A Antidepressants for smoking cessation
Meta Analysis The Cochrane database of systematic reviews 2014
A Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne
Meta Analysis The Cochrane database of systematic reviews 2020
B Assessment of the Role of Niacin in Managing Cardiovascular Disease Outcomes: A Systematic Review and Meta-analysis
Meta Analysis JAMA network open 2019
B Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis
Meta Analysis JAMA 2016
View all evidence for Niacin →

Compare Similar Products

View all Niacin products →