Home / Field guides / Creatine Monohydrate vs Creatine HCl: What the Labels State
Field guide
Creatine Monohydrate vs Creatine HCl: What the Labels State
Creatine comes to the shelf in two common forms, and the labels of the two read very differently: the serving sizes differ by several times, and so does the price of a gram. This guide says what each form is on a label, how this site audits both, and what the creatine labels published here state for amount per serving and cost per gram. Every figure is computed from the site's label data each time the site is built, and each count names what it is out of. Nothing here says what either form does; that is a question for the research the reference amounts cite, not for a label.
What each form is on a label
Both are creatine bound to something else. Creatine monohydrate is creatine with one molecule of water attached; creatine hydrochloride (HCl) is creatine with hydrochloric acid attached. The milligrams a panel prints are the weight of the whole compound, not of the creatine inside it: by molecular weight, creatine makes up about 88% of creatine monohydrate and about 78% of creatine HCl. A panel does not print that share, and neither does this site; the figures below are the compound as the label states it.
The label row usually names the form plainly: "Creatine Monohydrate 5 g" or "Creatine Hydrochloride 750 mg". Some rows carry a brand name for the form, or a word like "micronized" or "buffered", which describes the powder's processing and does not change the compound.
How this site audits both forms
The dose audit compares the amount a label states with a reference amount drawn from published research, and it uses the same reference amount for both forms.
| Ingredient | Reference dose | Source |
|---|---|---|
| Creatine Monohydrate | 5 g position-stand range | Kreider et al., ISSN Position Stand 2017, J Int Soc Sports Nutr 2017;14:18 (PMID 28615996) — 3-5 g/day to maintain muscle creatine stores; the threshold uses the high end, 5 g (position stand) |
| Creatine HCl | 5 g trial dose | Londoño-Velásquez et al., J Int Soc Sports Nutr 2025;22(Suppl 1):2533658 (doi 10.1080/15502783.2025.2533658; ISSN Conference abstract, not yet full peer review) — 5 g/day for 8 weeks, matched head-to-head against creatine monohydrate at the same dose, with a placebo arm, in elite team-sport athletes (conference abstract, not yet peer reviewed) |
Where its source states a range, the threshold uses one end of it: Creatine Monohydrate, 5 g: the high end of 3-5 g/day (Kreider et al., ISSN Position Stand 2017).
The HCl entry rests on a 2025 conference abstract that compared the two forms at the same amount, and the how we rate page says so. Brands often print a much smaller serving for HCl. Whether a smaller amount does the same work is a question the research will settle; a label cannot, and this site audits what the label states against the amount the cited research used. Dose integrity is 20% of the creatine score; value, cost per gram of labelled creatine, is 45%.
What the labels state
Of the 63 creatine products published here, 63 of 63 have a label two independent readings agreed on with an ingredient list, and those are the labels counted below. A label that lists both forms is counted under each.
- Creatine monohydrate: listed on 59 of 63 labels. 59 of 59 state an amount, and 50 of 59 state at least the reference amount. Across the 59 that state one, the median is 5,000 mg per serving, from 500 mg to 5,000 mg.
- Creatine HCl: listed on 5 of 63 labels. 5 of 5 state an amount, and 0 of 5 state at least the reference amount. Across the 5 that state one, the median is 750 mg per serving, from 750 mg to 2,500 mg.
The creatine monohydrate and creatine HCl ingredient pages list every product behind these counts by name, with its amount and whether it reaches the reference.
What a gram costs
The creatine ranking prices a gram of the creatine the label states, whichever form, from the brand's own store price: the figure the creatine ranking and the budget creatine slice are ordered on.
- Creatine monohydrate: median $0.093 per gram across the 55 of 59 with a brand-store price.
- Creatine HCl: median $0.281 per gram across the 5 of 5 with one.
Per gram of labelled creatine, the HCl median costs 201% more. A smaller serving means more servings in a container, so a cheaper container does not mean a cheaper gram. A product with no cost figure has no current brand-store price on record, or a package the price cannot be matched to, and is left out rather than estimated.
Reading a creatine label
- Find the form and the amount on the panel, not on the front. "5 g" on the lid can be a serving of the whole powder; the panel row says how much of it is creatine.
- Compare the amount with the reference the research used, which the reference doses guide explains, rather than with the serving size the brand chose.
- Price the gram, not the tub. A smaller serving means more servings per container, so the container price alone says nothing. The cost per gram tool does the division for any price and label.
Data study: What 63 creatine labels say and what a gram of creatine costs: the same shelf in aggregate, with a CSV. All data studies.