Prolific

Name: Prolific
Brand: PEScience
Price: 39.99 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 6.33/10

Value 30% weight 8.29/10

Consensus 25% weight 9.81/10

Cost in category per dosed serving

$1.58 median

$1.00 Cheaper than 80% of 42 scored pre-workouts $3.58

Consensus source: 4.90363012888731/5 across 8,457 buyer reviews on the brand's storefront · source ↗ · captured 2026-10-18. Brand-site reviews skew positive; see how we rate.

7.79/ 10

Composite score Strong

Composite score · 100% of category weighting covered

Nutrition

7 g per serving · 40 servings per container
Nutrition (per serving)	Amount
Protein	not enough data
Calories	10
Total Carbs	not enough data
Sugar	not enough data
Sugar Alcohols	not enough data
Fat	not enough data
Fiber	not enough data
Sodium	not enough data

Dose audit

Ingredient	Disclosed dose	Clinical threshold	Status	Source
L-Citrulline	3,000 mg	6,000 mg	UNDER	Bailey et al., J Appl Physiol 2015 — trial dosing 6 g/day
Betaine Anhydrous	1,250 mg	2,500 mg	UNDER	Cholewa et al., J Int Soc Sports Nutr 2013 — 2.5 g/day
Taurine	750 mg	1,000 mg	UNDER	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)
Caffeine	160 mg	200 mg	UNDER	Guest et al., ISSN Position Stand 2021, J Int Soc Sports Nutr 2021;18:1 (PMID 33388079) — 3-6 mg/kg; the threshold is the low end, 3 mg/kg, for a 67 kg adult: 200 mg
L-Theanine	100 mg	100 mg	MET	Giesbrecht et al., Nutr Neurosci 2010 — 97 mg paired with caffeine
Rhodiola Rosea	50 mg	200 mg	UNDER	Koozehchian et al., Nutrients 2025;17(23):3736 — 200 mg/day, low end of the two doses tested (200 vs 1,500 mg) in resistance-trained adults

Coverage: 6 of 7 dosed ingredients on this label matched the clinical reference.