Transparent Labs Bulk Black Pre Workout Paid link · rating unaffected 8.7/ 10 on 75% of the weighting · 2 of 3 components Find on Amazon

Home / Pre-Workout / Bulk Black Pre Workout

Label data verified Transparent Labs · #4 of 51 in Pre-Workout

Bulk Black Pre Workout

Name: Bulk Black Pre Workout
Brand: Transparent Labs
Price: 54.99 USD

Title links to Amazon · paid link, a search, not a verified listing · the rating is unaffected

Dose integrity 45% weight 10.00/10

Value 30% weight 6.74/10

Consensus 25% weight

not enough dataomitted — reweighted across the remaining components

Cost in category per dosed serving

$1.83 median

$0.884 Cheaper than 67% of the other 43 scored pre-workouts $5.96

Consensus was omitted — not enough data. Remaining components reweighted.

8.70/ 10

Composite score Exceptional

Composite score · 75% of category weighting covered

Nutrition

20.6 g per serving · 30 servings per container
Nutrition (per serving)	Amount
Protein	not enough data
Calories	5
Total Carbs	1 g
Sugar	not enough data
Sugar Alcohols	not enough data
Fat	not enough data
Fiber	not enough data
Sodium	180 mg

Dose audit

Disclosed dose against reference dose · 7 ingredients audited
Ingredient	Disclosed dose	Reference dose	Status	Source
Citrulline Malate 2:1	8,000 mg	8,000 mg trial dose	MET	Pérez-Guisado & Jakeman, J Strength Cond Res 2010;24:1215-1222 (PMID 20386132) — a single 8 g dose of citrulline malate in 41 men
Beta-Alanine	4,000 mg	4,000 mg position-stand range	MET	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
Betaine Anhydrous	2,500 mg	2,500 mg trial dose	MET	Cholewa et al., J Int Soc Sports Nutr 2013;10:39 (PMID 23967897) — 2.5 g/day for 6 weeks in strength-trained men
L-Tyrosine	2,000 mg	2,000 mg trial dose	MET	Colzato et al., Front Behav Neurosci 2013;7:200 (PMID 24379768) — a single 2.0 g oral dose in 22 healthy young adults
Caffeine	325 mg	200 mg position-stand range	MET	Guest et al., ISSN Position Stand 2021, J Int Soc Sports Nutr 2021;18:1 (PMID 33388079) — 3-6 mg/kg; the threshold is derived from the low end, 3 mg/kg, for a 67 kg adult: 3 x 67 = 201 mg, rounded to 200 mg
Alpha-GPC	300 mg	250 mg trial dose	MET	Marcus et al., J Int Soc Sports Nutr 2017;14:39 (PMID 29042830) — 250 mg and 500 mg daily for 7 days in 48 healthy college-aged men; the threshold uses the lower dose
L-Theanine	200 mg	100 mg trial dose	MET	Owen et al., Nutr Neurosci 2008;11:193-198 (PMID 18681988) — 100 mg L-theanine together with 50 mg caffeine, against 50 mg caffeine alone and placebo, in 27 healthy volunteers

Recognised by the dose reference but not scored: Sodium (replacement need is individual); Potassium (replacement need is individual); Huperzine A (the published dose comes from studies in people with a diagnosed condition, so it is not a threshold for anyone else).

Coverage: 10 of 16 dosed actives on this label matched the dose reference (blend headers, sub-totals, footnote rows and weighed excipients are not counted).

Full label as transcribed

16 ingredient rows, in the order the label prints them
Ingredient, as recorded	Per serving
Vitamin B6 (as Pyridoxal-5-Phosphate)	5 mg
Vitamin B12 (as Methylcobalamin)	0.1 mg
Zinc (as Zinc Citrate)	10 mg
Sodium (as Himalayan Rock Salt)	180 mg
Potassium (as Potassium Citrate)	130 mg
Citrulline Malate 2:1	8,000 mg
Beta Alanine	4,000 mg
Betaine Anhydrous (BetaPure®)	2,500 mg
L-Tyrosine	2,000 mg
Purcaf® Organic Caffeine (from Coffee bean) (Coffea arabica) (seed)	325 mg
AlphaSize® Alpha GPC 50%	300 mg
L-Theanine	200 mg
Senactiv® Tienchi Ginseng (Panax notoginseng) (Root) Extract & Chestnut Rose (Rosa roxburghii) (Fruit) Extract	50 mg
Bioperine® (Black Pepper Extract) (Piper nigrum) (fruit)	5 mg
Boron (from Boron Citrate)	3 mg
Huperzine A (Huperzia serrata) (leaf)	0.2 mg

Two independent readers transcribed this label and agreed on every amount shown (verified 2026-10-22). Panel source ↗ (opens in a new tab)