GNC Preventive Nutrition Tri-Sleep supplement bottle
What We Researched
6 active ingredients analyzed · 16 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
59
Product Score Poor
59
Brand Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g 1%
Calcium (as Dicalcium Phosphate) 70 mg 5%
Phosphorus (as Dicalcium Phosphate) 50 mg 4%
Light Green Layer: Relaxation 228 mg
Dark Green Layer: Going To Sleep 403 mg
Yellow Layer: Calm Sleep 102 mg
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Calcium (as Dicalcium Phosphate) Fair
  • Phosphorus (as Dicalcium Phosphate) Good
Other Ingredients Good

Fillers & Additives

  • Microcrystalline Cellulose
  • Dicalcium Phosphate
  • Hydroxypropyl Methylcellulose
  • Hydroxypropyl Cellulose
  • Stearic Acid
  • Croscarmellose Sodium
  • Magnesium Stearate
  • Silicon Dioxide
  • Crospovidone
  • Ethyl Vanillin
  • FD&C Yellow #5 Medium
  • FD&C Blue #1 Medium
  • Triacetin
  • Dextrin
  • artificial Vanilla flavor
  • Natural Mixed Berry Flavor
Efficacy Very Poor

Dosage Analysis

  • Calcium (as Dicalcium Phosphate) 70 mg Under-dosed
  • Phosphorus (as Dicalcium Phosphate) 50 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Total Carbohydrates 1 g 1%
Calcium (as Dicalcium Phosphate) 70 mg 5%
Phosphorus (as Dicalcium Phosphate) 50 mg 4%
Light Green Layer: Relaxation 228 mg
Dark Green Layer: Going To Sleep 403 mg
Yellow Layer: Calm Sleep 102 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Crospovidone Generally_safe

It is used as a binder to help tablets or capsules disintegrate.

Ethyl Vanillin Generally_safe

It is used to add vanilla flavor to the supplement.

FD&C Yellow #5 Caution

It is added to supplements to provide color.

FD&C Blue #1 Caution

It is used to improve the appearance of the supplement.

Triacetin Generally_safe

It is used as a solvent or humectant.

Dextrin Generally_safe

It is used as a filler, binder, or coating agent.

artificial Vanilla flavor Unknown
Natural Mixed Berry Flavor Safe

It is used to add a mixed berry flavor.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$39$38$37$36$35 Mar 12 $36.99
GNC

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
GNC Preventive Nutrition

Founded 1935 · Pittsburgh, Pennsylvania, USA · 53 products · gnc.com

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Claimed
Related Supplements
Frequently Asked Questions
Is GNC Preventive Nutrition Tri-Sleep a good supplement?

GNC Preventive Nutrition Tri-Sleep received a product quality score of 59/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 6 active ingredients with 30 servings per container. Of the 16 inactive ingredients, 9 are rated safe and 2 are flagged for review. The manufacturer, GNC Preventive Nutrition, holds a brand trust score of 59/100.

What are the ingredients in GNC Preventive Nutrition Tri-Sleep?

GNC Preventive Nutrition Tri-Sleep contains 6 active ingredients: Total Carbohydrates (1 g), Calcium (as Dicalcium Phosphate) (70 mg), Phosphorus (as Dicalcium Phosphate) (50 mg), Light Green Layer: Relaxation (228 mg), Dark Green Layer: Going To Sleep (403 mg), Yellow Layer: Calm Sleep (102 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Preventive Nutrition Tri-Sleep safe to take?

GNC Preventive Nutrition Tri-Sleep has been analyzed for ingredient safety across all its components. Of 16 inactive ingredients, 9 are rated safe. 2 ingredients are flagged for review: FD&C Yellow #5, FD&C Blue #1. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is GNC Preventive Nutrition a trustworthy supplement brand?

GNC Preventive Nutrition receives a brand trust score of 59/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 53 products in their lineup.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.