Pre-Workout · computed from the label

C4 Ultimate

by Cellucor · $45.00 / 20 servings ($2.25/serving)
B
Formula
Mostly dosed
A
Deal
Worth the premium
✓ Worth it — a fair deal on a real formula

"Our most extreme, fully loaded C4." The disclosed, upgraded C4.

2 of 3 recognized ingredients hit their clinically studied dose.

Ingredients vs the studied dose

IngredientLabel doseStatus
L-Citrulline
6g citrulline malate — ~3.9g actual citrulline, under 6g
6g (malate)⚠ LOW
Beta-Alanine
3.2g beta-alanine — the studied dose
3.2g✓ OK
Caffeine Anhydrous
300mg caffeine — strong
300mg✓ OK

Make it yourself — per serving

Ingredient (bulk)Cost/serving
L-Citrulline$0.32
Beta-Alanine$0.15
Caffeine Anhydrous$0.08
Flavor + sweetener$0.20
Your DIY cost$0.75
Cellucor charges ($45.00 / 20 servings)$2.25

That's a 3.0× markup over building the same actives from bulk powders.

The verdict

A big step up from C4 Original — this one actually discloses its doses and gets beta-alanine and caffeine right. The citrulline is malate, so it's a bit light, which caps the grade at B. Still, night and day vs the proprietary-blend original.
Open the interactive card → Decode your own supplement

Head-to-head

C4 Ultimate vs Wrecked

More Pre-Workout grades

Pre-Kaged — BGorilla Mode — A+Total War — BBULK Pre-Workout — APulse — ABucked Up — C

Educational only — not medical advice. Grades and clinical doses are computed from public labels against sourced research (citations on the main site); prices last verified 2026-07-21. Expensive Powder has no sponsors; bulk links may earn an affiliate commission, which never affects a grade. Talk to a clinician before starting any supplement.