Creatine HCl
Research reviewed: Up until 03/2026
Creatine HCl (Creatine Hydrochloride) is a dietary supplement with 5 published peer-reviewed studies involving 1,450 participants, researched for Strength & Performance.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Strength & Performance
StrongResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Strength & Performance
To compare muscular strength and endurance effects of creatine HCl vs monohydrate.
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To compare muscular strength and endurance effects of creatine HCl vs monohydrate.
Dose
Creatine HCl 1.5g vs creatine monohydrate 5g daily
Participants
20 resistance-trained men
Duration
4 weeks
Results
Both creatine forms produced comparable improvements in strength and power. Creatine HCl showed similar efficacy to monohydrate at one-third the dose with less GI discomfort.
How They Measured It
1RM bench press, leg press, push-ups, pull-ups, body composition
To compare solubility and absorption of creatine HCl versus monohydrate.
Study Type
Crossover pharmacokinetic study
Purpose
To compare solubility and absorption of creatine HCl versus monohydrate.
Dose
Creatine HCl 1.5g vs monohydrate 5g
Participants
12 healthy males
Duration
7 days
Results
Creatine HCl showed approximately 70% greater absorption efficiency at equivalent doses. Superior solubility (approximately 38x more soluble than monohydrate) confirmed.
How They Measured It
Serum creatine levels, urinary creatine excretion, absorption rate
To assess creatine HCl supplementation effects on sprint performance and VO2max.
Study Type
Randomised, double-blind trial
Purpose
To assess creatine HCl supplementation effects on sprint performance and VO2max.
Dose
Creatine HCl 3g daily
Participants
18 collegiate athletes
Duration
6 weeks
Results
Significant improvement in 400m sprint performance and VO2max. Body composition improved with increased lean mass and reduced fat mass.
How They Measured It
400m sprint time, VO2max, anaerobic threshold, body composition
To assess gastrointestinal tolerance of creatine HCl vs monohydrate.
Study Type
Randomised, double-blind trial - GI tolerance
Purpose
To assess gastrointestinal tolerance of creatine HCl vs monohydrate.
Dose
Creatine HCl 1.5g vs monohydrate 5g
Participants
24 healthy adults
Duration
4 weeks
Results
Creatine HCl significantly reduced GI discomfort, bloating, and cramping scores vs equivalent creatine monohydrate supplementation. Superior GI tolerance confirmed.
How They Measured It
GI symptom questionnaire: bloating, cramping, nausea scores
To compare efficacy of different creatine forms on exercise performance.
Study Type
Meta-analysis
Purpose
To compare efficacy of different creatine forms on exercise performance.
Dose
Various creatine forms at standard doses
Participants
Multiple RCTs combined (250+ total participants)
Duration
N/A
Results
All creatine forms demonstrated statistically significant performance improvements. Monohydrate has strongest evidence base; HCl shows comparable effect sizes at lower doses.
How They Measured It
Effect size analysis of strength, power, and body composition across multiple creatine forms
Frequently Asked Questions
Common questions about Creatine HCl research
There are currently 28 peer-reviewed studies on Creatine HCl (Creatine Hydrochloride), involving 1,450 total participants. Research covers Muscle strength, Exercise performance, Muscle recovery and 1 more areas. The overall evidence strength is rated as Very Strong.
The evidence is currently rated as "Very Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (5 human studies), and reported outcomes.
Creatine HCl has been researched for: Muscle strength, Exercise performance, Muscle recovery, Body composition. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 5 out of 28 studies are human trials. Human trials carry more weight in our evidence scoring system.
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