Pre Workout Stimulant Free

Name: Pre Workout Stimulant Free
Brand: NutraBio
Price: 49.99 USD
Availability: InStock

Photo and title link to Amazon · paid link, a search, not a verified listing · the rating is unaffected

Dose integrity 45% weight 8.32/10

Value 30% weight 1.22/10

Consensus 25% weight 9.60/10

Cost in category per dosed serving

$3.00 median

$1.00 Cheaper than 12% of 42 scored pre-workouts $3.58

Consensus source: 4.8/5 across 68 buyer reviews on the brand's storefront · source ↗ · captured 2026-10-18. Brand-site reviews skew positive; see how we rate.

6.51/ 10

Composite score Strong

Composite score · 100% of category weighting covered

Nutrition

30.2 g per serving · 20 servings per container
Nutrition (per serving)	Amount
Protein	not enough data
Calories	not enough data
Total Carbs	not enough data
Sugar	not enough data
Sugar Alcohols	not enough data
Fat	not enough data
Fiber	not enough data
Sodium	60 mg

Dose audit

Ingredient	Disclosed dose	Clinical threshold	Status	Source
L-Citrulline	10,000 mg	6,000 mg	MET	Bailey et al., J Appl Physiol 2015 — trial dosing 6 g/day
Betaine Anhydrous	4,100 mg	2,500 mg	MET	Cholewa et al., J Int Soc Sports Nutr 2013 — 2.5 g/day
Beta-Alanine	3,200 mg	4,000 mg	UNDER	Trexler et al., ISSN Position Stand 2015, J Int Soc Sports Nutr 2015;12:30 (PMID 26175657) — 4-6 g/day; the threshold uses the low end, 4 g
Taurine	2,000 mg	1,000 mg	MET	Balshaw et al., Amino Acids 2013;44:555-561 (PMID 22855206) — a single 1,000 mg dose in trained male middle-distance runners, randomised double-blind crossover; one of three healthy-adult trials at 1 g in the Waldron et al. Sports Med 2018 meta-analysis (doses 1-6 g)
L-Tyrosine	1,500 mg	2,000 mg	UNDER	Colzato et al., Front Behav Neurosci 2013;7:200 (PMID 24379768) — a single 2.0 g oral dose in healthy adults
Alpha-GPC	300 mg	250 mg	MET	Marcus et al., J Int Soc Sports Nutr 2017;14:39 (PMID 29042830) — 250 mg and 500 mg daily in 48 healthy college-aged men; the threshold uses the lower dose
Choline Bitartrate	550 mg	2,000 mg	UNDER	Naber, Hommel & Colzato, Sci Rep 2015;5:13188 — trial dosing 2 g

Coverage: 10 of 16 dosed ingredients on this label matched the clinical reference.