Natural Stacks Brain Food™, 4 Bottles, 15 Vegetarian Capsules Per Bottle supplement bottle
Natural Stacks

Brain Food™, 4 Bottles, 15 Vegetarian Capsules Per Bottle

What We Researched
7 active ingredients analyzed · 12 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
93
Product Score Excellent
80
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (Ascorbic Acid) 500 mg 556%
Vitamin B6 (as Pyridoxal-5-Phosphate) 5 mg 294%
Folate (as Quatrefolic® L-Methylfolate Glucosamine)¹ 1,000 mcg DFE 250%
Vitamin B12 (as Methylcobalamin) 4,000 mcg 166,667%
L-Tyrosine 650 mg **
Trimethylglycine (TMG) 600 mg **
L-Phenylalanine 500 mg **
Bioavailability Excellent

Absorption Rating

  • Vitamin C (Ascorbic Acid) Fair
  • Vitamin B6 (as Pyridoxal-5-Phosphate) Good
  • Folate (as Quatrefolic® L-Methylfolate Glucosamine)¹ Good
  • Vitamin B12 (as Methylcobalamin) Good
  • L-Tyrosine Good
  • Trimethylglycine (TMG) Good
  • L-Phenylalanine Good
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Capsule)
  • Ascorbyl Palmitate
  • Silica
  • Hypromellose (Capsule)
  • Ascorbyl Palmitate
  • Silica
  • Hypromellose (Capsule)
  • Ascorbyl Palmitate
  • Silica
  • Hypromellose (Capsule)
  • Ascorbyl Palmitate
  • Silica
Efficacy Very Good

Dosage Analysis

  • Vitamin C (Ascorbic Acid) 500 mg Effective
  • Vitamin B6 (as Pyridoxal-5-Phosphate) 5 mg Effective
  • Folate (as Quatrefolic® L-Methylfolate Glucosamine)¹ 1,000 mcg DFE Effective
  • Vitamin B12 (as Methylcobalamin) 4,000 mcg High
  • L-Tyrosine 650 mg Effective
  • Trimethylglycine (TMG) 600 mg Under-dosed
  • L-Phenylalanine 500 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (Ascorbic Acid) 500 mg 556%
Vitamin B6 (as Pyridoxal-5-Phosphate) 5 mg 294%
Folate (as Quatrefolic® L-Methylfolate Glucosamine)¹ 1,000 mcg DFE 250%
Vitamin B12 (as Methylcobalamin) 4,000 mcg 166,667%
L-Tyrosine 650 mg **
Trimethylglycine (TMG) 600 mg **
L-Phenylalanine 500 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$48$46$45$43$42 Mar 12 $46.00$43.99
iHerb
Vitacost

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

Brand Trust Report
Natural Stacks

Founded 2013 · Seattle, WA, United States · 29 products · naturalstacks.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Verified Source

Violation History

1 incident
Prop 65 Benzene2021-08-31Source
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Frequently Asked Questions
Is Natural Stacks Brain Food™, 4 Bottles a good supplement?

Natural Stacks Brain Food™, 4 Bottles, 15 Vegetarian Capsules Per Bottle received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 7 active ingredients with 5 servings per container. All 12 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Natural Stacks, holds a brand trust score of 80/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Natural Stacks Brain Food™, 4 Bottles?

Natural Stacks Brain Food™, 4 Bottles contains 7 active ingredients: Vitamin C (Ascorbic Acid) (500 mg), Vitamin B6 (as Pyridoxal-5-Phosphate) (5 mg), Folate (as Quatrefolic® L-Methylfolate Glucosamine)¹ (1,000 mcg DFE), Vitamin B12 (as Methylcobalamin) (4,000 mcg), L-Tyrosine (650 mg), Trimethylglycine (TMG) (600 mg), and 1 more. Notable high-dose ingredients include Vitamin C at 556% DV, Vitamin B6 at 294% DV, Folate at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Stacks Brain Food™, 4 Bottles safe to take?

Natural Stacks Brain Food™, 4 Bottles, 15 Vegetarian Capsules Per Bottle has been analyzed for ingredient safety across all its components. All 12 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Natural Stacks a trustworthy supplement brand?

Natural Stacks receives a brand trust score of 80/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2013 and headquartered in Seattle, WA, United States, the company offers 29 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Stacks has 1 historical regulatory incident on record, which are factored into the trust score.

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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.