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Cellucor C4 Sport Pre-Workout, front of package

Pre-workout · Formula check

Did Cellucor C4 Sport Pre-Workout change its formula?

THE SHORT ANSWER · CHANGED

Yes. Potassium went from 240 mg to 190 mg. Between labels seen Jun 4, 2025 and Oct 16, 2026, compared like for like.

Potassium

Jun 4, 2025240 mgOct 16, 2026190 mg

Dates are when each label was seen, not when the change was made, and older stock can stay on shelves. Source: Cellucor, cellucor.com, seen Oct 16, 2026.

Save Cellucor C4 Sport Pre-Workout to my LockerCompare your tub

By the FormulaSignal Record Figures observed through Published 3,185 dated product states since 2017 No paid placement

The labels, dated

One dated label on file. Each one has a source you can open.

A change counts only between labels of the same product, flavor, size and sales channel, both dated.

  1. Current labelSeen Aug 3, 2026 to Oct 16, 2026

    Watermelon panel, 15 dosed lines · Cellucor

    cellucor.com

What the confirmed change shows

Cellucor C4 Sport Watermelon label images observed on 2025-06-04 and 2026-10-16 declare 240 mg and 190 mg potassium per labeled serving. The labeled serving mass changes from 12.6 g to 12.2 g; both panels show 20 servings.

These observations bound a label change and do not establish manufacture, rollout, or transition dates or the contents of any customer container. Both pictured fronts say 246 g, while their panel serving masses times 20 servings equal 252 g and 244 g respectively; that inconsistency remains unresolved. The finding is limited to the potassium declarations per labeled serving and does not establish a net-weight change. It does not resolve the separate cross-flavor caffeine lead. No laboratory testing is claimed.

Tastes different?

Check your tub against this label. Line by line.

Turn your tub to the Supplement Facts panel. If an amount differs, you hold a different label from the one read here. If every line matches, the label does not explain the difference.

Declared lineCurrent label, Oct 16, 2026
Vitamin B6 (as Pyridoxal-5-Phosphate)3.4 mg
Folate (as 6S-5-Methyltetrahydrofolate calcium salt)100 mcg DFE
Vitamin B12 (as Methylcobalamin)6 mcg
Calcium25 mg
Phosphorus (as Dipotassium Phosphate)75 mg
Magnesium (as Magnesium Citrate)20 mg
Chloride (from Sea Salt)340 mg
Potassium (as Dipotassium Phosphate)190 mg
CarnoSyn® Beta-Alanine2 g
L-Arginine2 g
BetaPower® Betaine Anhydrous1.25 g
Creatine Nitrate (as NO3-T®)1 g
Taurine1 g
Caffeine Anhydrous200 mg
Toothed Clubmoss (Huperzia serrata) aerial parts extract (std. 1% Huperzine A)5 mg

Serving on the label: 12.2g (Approx. 1 level scoop) per serving. Read from Cellucor, Watermelon, dated Oct 16, 2026.

Signal Verified, here

What we checked. And the gaps, printed.

  • Label read twice66 of 66 fields agreed on the Watermelon panel from cellucor.com, dated Oct 16, 2026.
  • FlavorsRead: Icy Blue Razz, Blue Raspberry, Watermelon. 2 of 4 flavors on the store are not read yet.
  • Where it's soldBrand's own store only. Retail labels have not been compared.
  • Earlier labels1 dated label on file. The archive search is not complete, so an earlier label may exist.
  • MarketUS market only.
  • Kept currentRechecked within 180 days. If it is not re-verified by Apr 14, 2027, the status comes off.

Not checked yet

  • 2 of 4 flavors on the brand's store (2026-10-20) have no panel read yet.
  • Retail labels have not been compared with the brand's own store.
  • Earlier labels may exist that the Record has not recovered; a missing observation is not proof nothing changed.

Labels read from the brand's own store (DTC) channel only. Other channels may sell a different label. The panel is declared product-wide; flavor-specific panels read: Blue Raspberry, Icy Blue Razz, Watermelon. US market only.

Label read twice. Both readings agree. Not a laboratory test, safety certification, or endorsement of the product. How Signal Verified works

Method

How this page was made.

What FormulaSignal did

  • Read the label Cellucor published for Watermelon, dated Oct 16, 2026, twice and independently: 66 of 66 fields agreed.
  • Kept that label with the day each was seen and its source.
  • Counted a change only between two dated labels of the same flavor, size and sales channel: 1 confirmed change on file.
  • Printed every gap the Record knows about, above, instead of leaving it out.

What it did not do

  • No look inside your tub. A product record does not establish what a particular container holds, and label dates are not manufacture dates.
  • No taste test and no lab test. Every figure is what a label or a brand's own page declares, not what was measured in a tub.
  • No score and no winner. Differences are measured and shown; nothing is rated.
  • No payment and no preview. No brand paid to appear, and none saw this page before it was published.
  • No health advice. Whether an ingredient or an amount suits you is a question for a clinician.

Evidence

Sources you can open. Each one dated.

  1. Brand's own pageOct 16, 2026

    Later dated label

    Cellucor · cellucor.com

  2. Brand's page, archivedJun 4, 2025

    Earlier dated label

    Cellucor · web.archive.org

Questions

Cellucor C4 Sport Pre-Workout: formula questions

Did Cellucor C4 Sport Pre-Workout change its formula?

Yes. Potassium went from 240 mg to 190 mg. Between labels seen Jun 4, 2025 and Oct 16, 2026, compared like for like.

My Cellucor C4 Sport Pre-Workout tastes or feels different. Is it a new formula or a bad batch?

A label can answer half of that: whether the formula on the label changed. Compare the Supplement Facts panel on your tub with the label dated Oct 16, 2026 on this page (it declares Vitamin B6 (as Pyridoxal-5-Phosphate) 3.4 mg, Folate (as 6S-5-Methyltetrahydrofolate calcium salt) 100 mcg DFE and Vitamin B12 (as Methylcobalamin) 6 mcg per serving). If your amounts differ, you hold a different label from the one on file. If they match, the label does not explain the difference. FormulaSignal does not test what is inside a tub.

How do I know if I have the old or new Cellucor C4 Sport Pre-Workout?

Read the Supplement Facts panel. The label seen Jun 4, 2025 declares 240 mg potassium; the label seen Oct 16, 2026 declares 190 mg. The date on a tub is not a formula date, so go by the amounts printed.

What did FormulaSignal check, and what not yet?

Checked: the Watermelon label from Cellucor, dated Oct 16, 2026, read twice with 66 of 66 fields matching. Not yet: 2 of 4 flavors on the brand's store (2026-10-20) have no panel read yet; Retail labels have not been compared with the brand's own store; Earlier labels may exist that the Record has not recovered; a missing observation is not proof nothing changed.

Will I find out if Cellucor C4 Sport Pre-Workout changes its formula later?

Cellucor C4 Sport Pre-Workout is re-checked within 180 days, and it is on the monitoring schedule so the next label change is looked for. Save it to your Locker free to keep its dated label beside the one you take. A change counts only when two dated labels of the same flavor, size and sales channel differ.

Keep reading

Other Cellucor formula checks

Every formula check · How to tell if a formula changed · En español

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