Flat Tummy Pre-Workout, Watermelon, 8.36 oz (237 g) supplement bottle
Flat Tummy

Pre-Workout, Watermelon, 8.36 oz (237 g)

What We Researched
11 active ingredients analyzed · 7 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
75
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Iodine (as Potassium Iodide) 75 mcg 50%
Magnesium (as Magnesium Malate, Magnesium Citrate, Magnesium Glycinate) 20 mg 5%
Chloride (as Potassium Chloride, Sodium Chloride) 380 mg 16%
Sodium (as Sodium Chloride, Himalayan Pink Salt, Sodium Citrate) 115 mg 5%
Potassium (as Potassium Chloride) 230 mg 5%
Creatine Monohydrate 3 g **
Beta-Alanine 1.6 g **
L-Citrulline Malate 250 mg **
Caffeine Anhydrous 150 mg **
L-Tyrosine 100 mg **
Bioavailability Excellent

Absorption Rating

  • Iodine (as Potassium Iodide) Good
  • Magnesium (as Magnesium Malate, Magnesium Citrate, Magnesium Glycinate) Good
  • Chloride (as Potassium Chloride, Sodium Chloride) Good
  • Sodium (as Sodium Chloride, Himalayan Pink Salt, Sodium Citrate) Fair
  • Potassium (as Potassium Chloride) Good
  • Creatine Monohydrate Good
  • Beta-Alanine Good
  • L-Citrulline Malate Good
  • Caffeine Anhydrous Good
  • L-Tyrosine Good
Other Ingredients Very Good

Fillers & Additives

  • Natural and Artificial Flavors
  • Malic Acid
  • Citric Acid
  • Sucralose
  • Silicon Dioxide
  • FD&C Red #40 Medium
  • Acesulfame Potassium
Efficacy Poor

Dosage Analysis

  • Iodine (as Potassium Iodide) 75 mcg Under-dosed
  • Magnesium (as Magnesium Malate, Magnesium Citrate, Magnesium Glycinate) 20 mg Under-dosed
  • Chloride (as Potassium Chloride, Sodium Chloride) 380 mg Under-dosed
  • Sodium (as Sodium Chloride, Himalayan Pink Salt, Sodium Citrate) 115 mg Under-dosed
  • Potassium (as Potassium Chloride) 230 mg Under-dosed
  • Creatine Monohydrate 3 g Effective
  • Beta-Alanine 1.6 g Under-dosed
  • L-Citrulline Malate 250 mg Under-dosed
  • Caffeine Anhydrous 150 mg Effective
  • L-Tyrosine 100 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Total Carbohydrate <1 g 0%†
Iodine (as Potassium Iodide) 75 mcg 50%
Magnesium (as Magnesium Malate, Magnesium Citrate, Magnesium Glycinate) 20 mg 5%
Chloride (as Potassium Chloride, Sodium Chloride) 380 mg 16%
Sodium (as Sodium Chloride, Himalayan Pink Salt, Sodium Citrate) 115 mg 5%
Potassium (as Potassium Chloride) 230 mg 5%
Creatine Monohydrate 3 g **
Beta-Alanine 1.6 g **
L-Citrulline Malate 250 mg **
Caffeine Anhydrous 150 mg **
L-Tyrosine 100 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Natural and Artificial Flavors Generally_safe

It is used to improve the taste of the product.

Malic Acid Safe

Adds tartness and enhances fruit flavors in gummies and chewables.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

FD&C Red #40 Caution

It is used to improve the appearance of the supplement.

Acesulfame Potassium Generally_safe

It is used to provide sweetness without adding calories.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 Mar 12 $25.00
iHerb

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

Brand Trust Report
Flat Tummy

Founded 2013 · Westbrook, Maine, USA · 9 products · flattummyco.com/

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

2 incidents
Lawsuit False advertising of FocusFactor supplements.2023Source
Prop 65 Lead, Cadmium2019-05-28Source
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Frequently Asked Questions
Is Flat Tummy Pre-Workout, Watermelon a good supplement?

Flat Tummy Pre-Workout, Watermelon, 8.36 oz (237 g) received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 11 active ingredients with 30 servings per container. Of the 7 inactive ingredients, 3 are rated safe and 1 are flagged for review.

What are the ingredients in Flat Tummy Pre-Workout, Watermelon?

Flat Tummy Pre-Workout, Watermelon contains 11 active ingredients: Total Carbohydrate (<1 g), Iodine (as Potassium Iodide) (75 mcg), Magnesium (as Magnesium Malate, Magnesium Citrate, Magnesium Glycinate) (20 mg), Chloride (as Potassium Chloride, Sodium Chloride) (380 mg), Sodium (as Sodium Chloride, Himalayan Pink Salt, Sodium Citrate) (115 mg), Potassium (as Potassium Chloride) (230 mg), and 5 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Flat Tummy Pre-Workout, Watermelon safe to take?

Flat Tummy Pre-Workout, Watermelon, 8.36 oz (237 g) has been analyzed for ingredient safety across all its components. Of 7 inactive ingredients, 3 are rated safe. 1 ingredient is flagged for review: FD&C Red #40. '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.

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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.