C4 Ultimate Shred is a named Cellucor product with multiple formula generations. It should not be reconstructed from a general description of thermogenic pre-workouts or from C4 Ultimate’s label. The current manufacturer image identifies fifth-generation Pink Lemonade packaging with 20 servings and a 406 g net weight.
What the current manufacturer page says
The current US listing advertises 300 mg caffeine alongside TeaCrine and Dynamine. It also identifies these ingredients or ingredient combinations:
- VELOX L-arginine and L-citrulline
- CarnoSyn beta-alanine and BetaPower
- PeptiPump bioactive peptides
- Tyrosine and huperzine A
- Cayenne extract, CaloriBurn grains of paradise, MitoBurn and Oligonol
That list establishes the page’s named components. It does not supply their complete amounts, extract standardizations or the current flavor-specific Supplement Facts panel. TeaCrine and Dynamine are separate ingredients; their names do not mean that 300 mg caffeine is the weight of the entire stimulant combination.
What is still missing
A complete current panel, full other-ingredient list and allergen declaration were not verified from the accessible listing. The front tub’s 406 g and 20 servings identify packaging, but dividing those numbers is not a substitute for a confirmed scoop instruction. Ask for the exact flavor’s complete label before relying on serving weight, individual ingredient quantities or allergy suitability.
The missing information also limits comparisons. It is not possible to establish equal ingredient doses, a lower overall stimulant exposure, or a comparable botanical preparation simply because another product uses some of the same trademarks. A marketing category such as “thermogenic” does not provide the missing composition data.
Historical descriptions are different evidence
Cellucor’s July 2019 caffeine guide describes Ultimate Shred using Capsimax, Oligonol, DygloFit and BioPerine. Its 300 mg caffeine statement does not make that historical ingredient description a current label. In particular, the old branded extracts should not be inserted into today’s formula merely to fill gaps.
Fat-loss language and safety
Cellucor markets the product for fat-burning support. That positioning is not evidence that a user will lose a particular amount of fat. NIH’s weight-loss supplement review explains the limited evidence for many marketed products and the importance of discussing them with a healthcare professional. Ingredient-level research cannot by itself validate this exact finished formula.
The current manufacturer warning excludes pregnancy and nursing, prohibits use with nitrates for chest pain or PDE-5 inhibitors, and advises against combining it with other caffeine or stimulants. It also calls for professional review with medications or medical conditions. Nothing in this overview establishes a safe stacking plan or permission to increase a serving. The next useful step is a consistent, complete, version-matched label.
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 13, 2026. Cellucor current US C4 Ultimate Shred listing. Cellucor caffeine guide; historical 2019 formula. NIH consumer weight-loss supplement fact sheet. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
