An evidence-based briefing

Backed by ISSN position stands · sources cited

A floor, not a ceiling.

Is 5g of creatine
actually enough?

Almost every label says 3–5 grams a day. The published research says that’s a floor, not a ceiling — and for a lot of people, it’s not enough.

Your starting point

What the research suggests, by profile

A starting point for judgement, not a substitute for it

Profile / weight Grams Why

Under 65kg, light–moderate training 3–5g Meets the ~0.03g/kg/day maintenance threshold

65–90kg, regular resistance training 5g Standard maintenance dose across most RCTs

90kg+ or high training volume 8–10g Larger creatine pool, faster daily turnover

Plant-based diet 5g (upper end) No dietary creatine baseline to build on

Cognitive / brain-health goal 5–10g Brain uptake is slower than muscle uptake

Women, any training phase 3–5g, every day No evidence supports cycle-timed dosing

Older adults (with resistance training) 3–5g Supports lean mass and functional strength

The master rule

One simple rule.
Every format.

Every format

Same rule across the range

The evidence

Consistency beats the gram count.

Body size sets the number

Turnover scales with your creatine pool — research converges on 8–10g/day for larger, heavily muscled athletes.
Your brain needs more

A 2024 meta-analysis of 16 RCTs found cognitive benefits strongest at 5–10g/day — above muscle-only maintenance.
Plant-based starts at zero

Omnivores get ~1g/day from food; vegans essentially none — the group most likely to under-dose.
Hard training burns it faster

Higher volume means faster phosphocreatine depletion — a stronger case for the upper range.
Life stage changes it

No evidence for cycle-timed dosing; in older adults creatine + resistance training reliably improves lean mass.
Loading is optional

Hultman 1996: 20g × 6 days and 3g × 28 days reach the same saturation. Loading is a head start, not a higher ceiling.