🟢 92/100

This product looks safe

  • Vitamin B3: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
  • 20% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Vitamin B3: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)

Label Data

13.7 Gram(s) Serving Size
29 Servings
Other Combinations Product Type
20% Evidence Coverage

Supplement Facts — Evidence Check

2500 mg
📊 Market median: 496.0mg (192 products) 📚 20 studies — no high-quality reviews
This product: 2500mg
📊 Market median: 500.0mg (143 products)
This product: 5500mg
AgmaPure
1000 mg
L-Alanine
2000 mg
40 mg (200% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.1× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 40mg UL 35mg

Other Ingredients

Malic Acid Citric Acid Cyclic Dextrin natural Green Apple flavor Acesulfame Potassium Sucralose Blue Spirulina Turmeric

Label Claims — Verification

All Other
Structure/Function
All Other (100% of products) Structure/Function (82% of products) Nutrient (8% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Women (not pregnant or lactating) No Allergies Gluten Free

Product Information

📋 Directions for Use

Suggested Use: Mix two-scoops with 12-16 oz. of cold water and drink 20-30 minutes before training. Mix 2 level scoops with 12-16 oz. of cold water.

⚠️ Warnings & Precautions

Keep out of reach of children.

Do not exceed the recommended dose. Consult your physician before using this product.

Do not use this product if you are pregnant or nursing. Do not use this product if you are taking any prescription medication.

Do not use this product if you are under the age of 18.

Warning: Do not use if you are currently taking nitrates for chest pain or if you are taking medications to treat erectile dysfunction such as PDE-5 inhibitors.

Warning: This product is manufactured in a GMP compliant plant that processes milk.

🧪 Formulation Notes

MFX N.O, is a stimulant-free per-workout that increases the body's nitric oxide production for a workout, unlike any other. Increasing N.O can boost blood flow, transporting oxygen to the muscle for improved athletic performance and insane muscle pumps.

Gluten free Soy free Non-GMO

Certified Vegan AVA American Vegetarian Association

Advanced pre workout Enhance N.O production

Agmarpure Natural Agmatine sulfate

Allergies: None

Additional Information

Keep tightly closed in a cool, dry place away from sunlight.

Made in our GMP compliant facility Made in an FDA Registered Facility Certified Vegan AVA American Vegetarian Association

SDVOSB Service Disabled Veteran Owned Small Business CVE

Ohio family owned business

Product Details

DSLD Entry Date 2022-05-19
Product Type Other Combinations
Form Powder
Brand Muscle Feast
DSLD ID 262940
Data Updated 2026-04-11

Research Evidence

23 Research Sources
47 Avg Quality Score
18 Rct
3 Systematic Review
1 Meta Analysis
1 Clinical Trial
B Effect of Folic Acid, Betaine, Vitamin B₆, and Vitamin B12 on Homocysteine and Dimethylglycine Levels in Middle-Aged Men Drinking White Wine
Rct Nutrients 2016
C Betaine for nonalcoholic fatty liver disease: results of a randomized placebo-controlled trial
Rct Hepatology (Baltimore, Md.) 2009
C Guidelines for the diagnosis and management of cystathionine beta-synthase deficiency
Systematic Review Journal of inherited metabolic disease 2017
C Newborn screening for homocystinurias and methylation disorders: systematic review and proposed guidelines
Systematic Review Journal of inherited metabolic disease 2015
C Effects of low-dose B vitamins plus betaine supplementation on lowering homocysteine concentrations among Chinese adults with hyperhomocysteinemia: a randomized, double-blind, controlled preliminary clinical trial
Rct European journal of nutrition 2023
C Association of Betaine-Homocysteine S-Methyl Transferase (rs3797546 and rs3733890) polymorphisms with non-syndromic cleft lip/palate: A meta-analysis
Meta Analysis International orthodontics 2019
C Two methods for assessment of choline status in a randomized crossover study with varying dietary choline intake in people: isotope dilution MS of plasma and in vivo single-voxel magnetic resonance spectroscopy of liver.
Rct The American journal of clinical nutrition
C Effect of inulin supplementation on fecal and blood metabolome in alcohol use disorder patients: A randomised, controlled dietary intervention.
Rct Clinical nutrition ESPEN
C Choline and betaine concentrations in plasma discriminate levels of dietary choline intake in healthy adults: analysis of a double-blind randomized crossover controlled feeding study.
Rct The American journal of clinical nutrition
C Fibrates may cause an abnormal urinary betaine loss which is associated with elevations in plasma homocysteine
Rct Cardiovascular drugs and therapy 2009
View all evidence for Betaine →

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