Leg Day
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Calcium702 systematic reviews · 3290 randomised trials | 120 mg |
| Phosphorus37 systematic reviews · 331 randomised trials | 95 mg |
| Magnesium250 systematic reviews · 790 randomised trials | 50 mg |
| Potassium87 systematic reviews · 1010 randomised trials | 100 mg |
| Dual Carbohydrate Energy Blend | 30 g |
| Leg Day Performance Matrix | 450 mg |
| Intra Blast Aminos | 8.6 g |
| Electrolyte & Hydration Optimizer | 3.97 g |
Certifications & Testing
Other Ingredients
Citric Acid, Natural & Artificial Flavors, Malic Acid, Sucralose, Acesulfame Potassium, Beet, Powder, Beta-Carotene
Recommended Use
Suggested use: For intra-workout, mix 1-2 scoops (1-2 servings) with 32-64 ounces of cold water. Drink approximately 1/3 of mix 20 minutes prior to intense training, then sip the remainder throughout your training session. As a peri-workout, use pre, intra or post training to enhance endurance and recovery.
Warnings
Warning: Keep out of reach of children. This product is only intended to be consumed by healthy adults 18 years of age or older. Do not use if you are pregnant, breast feeding, have known medical conditions or are taking prescription or OTC medication. Consult with your health care practitioner before using this product. Discontinue use two weeks prior to surgery. This product is intended as a die
Frequently Asked Questions
What is NutraBio Leg Day's Formulate score?
NutraBio Leg Day scores 74 out of 100 (grade B+) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NutraBio Leg Day worth it?
NutraBio Leg Day scores 74/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in NutraBio Leg Day?
Each serving contains Calcium (120 mg), Phosphorus (95 mg), Magnesium (50 mg), Potassium (100 mg), and more. Serving size: 47.66 Gram(s). 20 servings per container.
How do I take leg day?
Suggested use: For intra-workout, mix 1-2 scoops (1-2 servings) with 32-64 ounces of cold water. Drink approximately 1/3 of mix 20 minutes prior to intense training, then sip the remainder throughout your training session. As a peri-workout, use pre, intra or post training to enhance endurance and recovery.
Who makes Leg Day?
Leg Day is made by NutraBio. See Formulate's full grade and product lineup for NutraBio on its brand page.
Is NutraBio Leg Day third-party tested?
NutraBio lists the following certifications and testing for this product: Vegetarian, Gluten-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.