Creatine Timing Isn’t the Problem — Your Daily Dose Might Be

Creatine Timing Isn’t the Problem — Your Daily Dose Might Be Key Points

 Key Takeaways

• No significant differences were found between taking creatine before training, after training, or taking a placebo for body composition, muscle thickness, or performance over 16 weeks (Mills et al. 2026). This study looked specifically at creatine timing in relation to training sessions.
• Moreover, participants only took creatine on training days — averaging roughly 2.5 g/day instead of the standard 5 g/day protocol — meaning muscle creatine stores may never have reached saturation.
• Practical bottom line: this study does not change the existing recommendation. Therefore, take 3–5 g of creatine monohydrate daily — every day, not just training days — and don’t stress about the clock

Introduction: Creatine Timing Is a Secondary Question

Creatine monohydrate is one of the most studied and consistently supported supplements in sports nutrition. Its benefits for strength, lean mass, and high-intensity performance are well established across hundreds of trials. What remains less clear, however, is whether creatine timing — specifically, taking it immediately before versus immediately after resistance training — makes a meaningful difference.

To address this gap, Mills et al. (2026) published a 16-week randomized, double-blind, placebo-controlled trial in Nutraceuticals. The study aimed to determine whether creatine before or after a workout produced superior results in trained lifters. It is a question worth asking. The execution, though, introduced problems that make the answer difficult to trust.

What We Already Know About Creatine Dosing and Creatine Timing

The foundational research on creatine monohydrate is unambiguous on dosing. Harris et al. (1992) showed that creatine supplementation significantly elevates intramuscular creatine and phosphocreatine in resting and exercised muscle. Furthermore, Hultman et al. (1996) established that either a loading phase (20 g/day for 5–7 days) or sustained daily intake of 3–5 g is required to maximize muscle creatine stores. Once stores are elevated, Greenhaff et al. (1994) demonstrated that phosphocreatine resynthesis during recovery is substantially enhanced — which is the mechanism underlying creatine’s ergogenic effects.

The key word is daily. Without consistent daily dosing reaching and maintaining saturation, those mechanisms don’t activate. That context is essential for understanding why the Mills et al. (2026) results look the way they do.

On creatine timing specifically, the prior evidence is thin. Antonio and Ciccone (2013) found a possible post-workout advantage in 19 participants. A 2022 narrative review by Candow et al. found the literature too inconsistent to support firm timing recommendations. The consensus: total daily creatine intake consistently matters more than the ingestion window.

Study Design

Mills et al. (2026) recruited trained young adults aged 18–39 who had been resistance training at least two days per week for a minimum of four weeks. In total, thirty-seven participants were randomized into three groups; however, only 27 completed the full 16-week protocol:

• Creatine Before (n = 10; 5 male, 5 female): 5 g creatine monohydrate immediately before training, placebo after.
• Creatine After (n = 9; 4 male, 5 female): placebo before training, 5 g creatine monohydrate immediately after.
• Placebo (n = 8; 3 male, 5 female): placebo before and after training.

All groups, furthermore, followed the same supervised resistance training program — 8 exercises per session, 3 sets of 6, 8, or 10 reps to volitional fatigue — alternating training days for 16 weeks.

Outcomes included body composition via bioelectrical impedance analysis (BIA), muscle thickness via ultrasound at five sites (biceps, triceps, quadriceps, hamstrings, calf), and performance measures: leg press and chest press 1-RM, muscular endurance (reps), vertical jump power, and medicine ball throw distance.

Results: No Creatine Timing Differences — And No Creatine Advantage

No between-group differences emerged for any outcome (all p > 0.05). Creatine timing produced no detectable effect. Neither creatine group outperformed placebo.

All three groups improved over time via training:

One near-miss: the Creatine After group improved chest press 1-RM by ~19% versus ~6% for both other groups (p = 0.054) — a trend that didn’t reach significance, and which the authors partly attribute to higher training compliance in that group (88% vs. 63% for Creatine Before).

No significant effects emerged for vertical jump, body composition, or muscle thickness at any site — meaning the training program itself didn’t produce measurable hypertrophy on BIA or ultrasound. That alone should give you pause.

The Real Problem: 2.5 g/Day of Creatine May Not Be Enough

Here’s the finding that matters most. Participants took creatine monohydrate only on training days — no rest-day supplementation, no loading phase. Over 16 weeks, this totaled roughly 280 g of creatine, about half what a standard 5 g daily protocol delivers. Averaged across seven days per week, that equals approximately 2.5 g/day.

Hultman et al. (1996) established that 3–5 g of creatine per day is the minimum required for gradual intramuscular saturation. Harris et al. (1992) showed that without reaching sufficient intramuscular creatine levels, the ergogenic effects simply don’t materialize. This study never measured intramuscular creatine directly — via muscle biopsy or spectroscopy — so we have no way of confirming whether participants’ muscles were actually running on elevated creatine stores at any point.

This is not a minor methodological footnote. It means this trial may have tested the effects of inadequate creatine supplementation rather than creatine timing per se. The null result against placebo is almost certainly a dosing failure, not evidence that creatine doesn’t work.

The broader meta-analytic literature makes this clear: Burke et al. (2023) found meaningful muscle hypertrophy from properly dosed creatine supplementation combined with resistance training across a large body of evidence. Chilibeck et al. (2017) showed similar benefits in older adults. That evidence base doesn’t disappear because one underdosed trial produced a null result.

Key Limitations

• Severely underpowered. The authors’ own power analysis required 51 participants. Only 27 completed the trial. Groups of 8–10 cannot detect anything short of a massive effect.
• Uneven compliance. The Creatine Before group reported 61% supplementation adherence versus 85–88% in the Creatine After group. Any creatine timing comparison between groups with this level of behavioral disparity is difficult to interpret.
• BIA measurement. Bioelectrical impedance is less precise than DXA or MRI for lean mass changes in trained populations. Marra et al. (2019) note that BIA fluctuates substantially with hydration — which creatine monohydrate itself influences — potentially masking real changes in either direction.

Practical Applications: Creatine Timing and Daily Dosing

The creatine timing debate remains open. But before worrying about the clock, make sure the basics are covered:

• Take 3–5 g of creatine monohydrate every day, including rest days. This is how you reach and maintain intramuscular saturation (Hultman et al., 1996). Skipping rest days — as this study’s protocol did — undermines the entire supplementation strategy and may explain why results matched placebo.
• If you are currently under-dosing creatine, you may not be experiencing its full benefits. The Mills et al. (2026) data provide a clear illustration: ~2.5 g/day on training days produced nothing beyond what training alone achieved.
• Don’t overthink creatine timing. Post-workout creatine may have a marginal theoretical advantage via enhanced muscle uptake during recovery (Robinson et al., 1999), but the practical difference is almost certainly small. Consistency beats clock-watching.
• Consider a loading phase (20 g/day for 5–7 days) to accelerate saturation if you want faster results. Daily dosing at 3–5 g will get you there within 3–4 weeks without loading (Hultman et al., 1996).

Conclusion: Creatine Timing Matters Less Than Getting Your Daily Dose Right

The Mills et al. (2026) trial found no creatine timing advantage — before or after training made no difference. But the deeper lesson is about dosing: at ~2.5 g/day on training days only, creatine performed no better than placebo. That is not evidence against creatine monohydrate.

Decades of research using properly dosed daily supplementation — 3–5 g of creatine monohydrate, consistently — produce reliable improvements in strength and lean mass (Burke et al., 2023; Chilibeck et al., 2017; Kreider et al., 2017). Don’t let one underdosed trial talk you out of one of the most well-supported supplements in the literature.

FAQ

Does creatine timing affect muscle growth?

A: Creatine timing does not appear to have a large effect on muscle growth. Mills et al. (2026) found no difference between pre- and post-workout dosing, consistent with Candow et al. (2022). Daily dosing consistency and total intake matter far more than the specific hour you take it.

How much creatine should I take per day?

A: The evidence-based recommendation is 3–5 g of creatine monohydrate every day, including rest days (Kreider et al., 2017). The Mills et al. (2026) study averaged ~2.5 g/day by skipping rest days — a dose that likely never saturated muscle stores and produced no benefit over placebo.

A: What happens if I only take creatine on training days?

Taking creatine monohydrate only on training days means intramuscular stores likely never fully saturate. Harris et al. (1992) and Hultman et al. (1996) established that consistent daily dosing is required to elevate muscle creatine to effective levels. Mills et al. (2026) illustrates this directly.

Should I take creatine before or after my workout?

A: Either works. Creatine timing relative to your workout is unlikely to make a meaningful difference. Pick whichever timing improves consistency — that’s the variable that actually drives results.

Is creatine effective for trained lifters?

A: Yes. Creatine monohydrate is well supported by meta-analyses for trained lifters (Burke et al., 2023; Chilibeck et al., 2017). The null result in Mills et al. (2026) reflects an underdosed protocol, not an absence of creatine efficacy.

References

Antonio, J.; Ciccone, V. The effects of pre versus post workout supplementation of creatine monohydrate on body composition and strength. J. Int. Soc. Sports Nutr. 2013, 10, 36. PubMed

Burke, R. et al. The effects of creatine supplementation combined with resistance training on regional measures of muscle hypertrophy: a systematic review with meta-analysis. Nutrients 2023, 15, 2116. PubMed

Candow, D. et al. Creatine O’Clock: Does timing of ingestion really influence muscle mass and performance? Front. Sports Act. Living 2022, 4, 893714. DOI

Chilibeck, P. et al. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis. Open Access J. Sports Med. 2017, 8, 213–226. DOI

Greenhaff, P. et al. Influence of oral creatine supplementation of muscle torque during repeated bouts of maximal voluntary exercise in man. Clin. Sci. 1994, 84, 565–571. PubMed

Harris, R.C.; Söderlund, K.; Hultman, E. Elevation of creatine in resting and exercised muscle of normal subjects by creatine supplementation. Clin. Sci. 1992, 83, 367–374. PubMed

References

Hultman, E. et al. Muscle creatine loading in men. J. Appl. Physiol. 1996, 81, 232–237. PubMed

Kreider, R.B. et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. J. Int. Soc. Sports Nutr. 2017, 14, 18. Full text

Marra, M. et al. What is the accuracy of impedance measurements for the assessment of the body composition? Contrast Media Mol. Imaging 2019, 2019, 3548284. DOI

Mills, S. et al. Effect of pre- versus post-workout creatine monohydrate supplementation on body composition and strength. Nutraceuticals 2026, 6, 42. Full text

Robinson, T.M. et al. Role of submaximal exercise in promoting creatine and glycogen accumulation in human skeletal muscle. J. Appl. Physiol. 1999, 87, 598–604. DOI

About the Author

Robbie Durand

Robbie Durand is an exercise physiologist and science writer specializing in evidence-based fitness and nutrition research. With over 15 years of experience translating peer-reviewed studies into actionable advice, Robbie helps readers make informed decisions about training, supplementation, and body composition.