What is Transparent Labs BULK BLACK?
BULK BLACK is Transparent Labs’ high-stimulant pre-workout. It has a defined formula and its own manufacturer listing. The verified Peach Mango label contains no creatine, and its five calories per serving do not make it a mass-gainer shake. The word “bulk” should not be used to invent either of those product identities.
This is an assessment of published labels and source documents. It does not claim hands-on flavor testing, measured strength gains or a personally observed energy response.
The Peach Mango label, serving by serving
The manufacturer’s Peach Mango facts graphic gives one 20.8 g scoop and 30 servings. Selected declared ingredients are:
- Citrulline malate 2:1: 8,000 mg
- Beta-alanine: 4,000 mg
- Betaine anhydrous, as BetaPure: 2,500 mg
- L-tyrosine: 2,000 mg
- PurCaf organic caffeine from coffee bean: 325 mg
- AlphaSize alpha-GPC 50%: 300 mg
- L-theanine: 200 mg
- Senactiv botanical extract combination: 50 mg
- BioPerine black pepper extract: 5 mg
- Boron: 3 mg
- Huperzine A: 200 micrograms
The panel also lists vitamin B6, vitamin B12, zinc, sodium and potassium. Its other-ingredients section names stevia-derived sweeteners and beta-carotene coloring. Check the label for your chosen flavor rather than assuming every flavor has identical ancillary ingredients.
Two distinctions matter when comparing doses: 8 g citrulline malate is not 8 g pure L-citrulline, and the 300 mg AlphaSize entry is explicitly a 50% ingredient preparation. It should not be described as 300 mg pure alpha-GPC. The stated huperzine A amount is in micrograms, not milligrams.
Is the caffeine amount 325 mg or 350 mg?
The inspected Peach Mango panel lists 325 mg. However, the product page’s FAQ says 350 mg from organic caffeine and Infinergy di-caffeine malate. Its ingredient overview also mentions Infinergy, while the inspected Peach Mango facts panel does not list that ingredient.
This discrepancy should remain visible. The label supports a 325 mg claim for this specific published version; it does not prove that all historical versions, flavors or seller stock match it. Check the exact tub and ask Transparent Labs to resolve a mismatch before relying on either website number.
What the ingredients can and cannot establish
NIH’s review of exercise supplements describes beta-alanine studies involving repeated intake over weeks, with mixed performance findings. A tingling sensation after a dose is not evidence of muscle gain or a successful workout. Ingredient research also does not establish that this finished product delivers every benefit claimed in its marketing.
The absence of creatine matters if that is what you are shopping for. BULK BLACK does not replace a creatine supplement. Increasing the number of scoops would increase stimulant exposure without adding creatine, so that is not a sensible way to fill the gap.
How to assess whether it fits your routine
- Count total caffeine. Include coffee, energy drinks and other supplements. The FDA notes wide differences in sensitivity and says naturally sourced caffeine does not have a different safety profile simply because of its origin.
- Read the physical directions. The manufacturer limits BULK BLACK to one serving per day. Do not combine label directions from different formulas or exceed a serving to chase a stronger effect.
- Check the evidence behind testing claims. The product page links laboratory reports. A published ingredient report identifies Black Cherry and a particular lot, rather than the Peach Mango tub pictured here. Flavor, lot, date and tested analytes all matter; a report is not a guarantee of workout results.
- Compare alternatives on the same basis. Use total caffeine, ingredient form, declared amount and cost per labeled serving. A competitor’s branding or an affiliate offer does not demonstrate a better formula.
BULK BLACK is best understood as a caffeine-containing pre-workout whose exact label deserves attention. If you are caffeine-sensitive, take medicines or have a relevant medical condition, discuss the complete ingredient list with a clinician before use.
Product pages and existing offers
These are affiliate links; we may earn a commission from qualifying purchases. Check current labels and checkout terms. Discounts, including any 20% offer or code SHAWTAYYYY7, are subject to eligibility and are not guaranteed.
The larger sample-kit campaign is distinct from older three-sample or five-sample advertisements. Confirm current contents, shipping, customer eligibility and optional add-ons on its landing page.
Sources and review notes
Reviewed October 12, 2026. Transparent Labs BULK BLACK official product page. Transparent Labs Peach Mango facts and other ingredients. Transparent Labs Peach Mango standalone Supplement Facts. NIH ODS: exercise-supplement evidence. FDA: caffeine sources and sensitivity. BULK BLACK Black Cherry lot 25102803 ingredient report, January 29 2026. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
