The short answer
Yes. Creatine and pre-workout do two different jobs, and they work well side by side. Take 3 to 5 g of creatine every day to keep your muscle stores topped up [1], and use a pre-workout on training days for energy and focus. Keep your total caffeine under 400 mg a day from all sources, with no more than 200 mg in one serve. [2]
New to one or both? Our Supplement Finder will point you to a good starting point.
In this article
Maybe you've got creatine and pre-workout in the cupboard and heard caffeine "cancels out" creatine. Or you're just starting and wonder if you need both. No silly questions. This guide is for first-timers and for anyone who already trains.
We'll cover what each one does, what the caffeine and creatine research actually shows, and a simple routine that works.
Two supplements, two different jobs
| Creatine | Pre-workout | |
|---|---|---|
| What it does | Tops up the creatine stored in your muscles | Supports energy, focus and performance in the session ahead |
| How it works | Builds up over days and weeks | Works within about an hour |
| When you take it | Every day, training or not | Before training, on training days |
| Typical amount | 3 to 5 g a day | Depends on the formula and its caffeine |
| What the research supports | Strength, power and lean muscle gains alongside training [1] | Caffeine supports endurance, strength, sprinting and focus [3] |
Creatine is a long game. Supplementing raises your muscle creatine by about 20 to 40%, which supports more work across hard sets and sprints, and over time more strength and muscle. [1]
Pre-workout is for today. Most are built around caffeine, which consistently supports exercise performance at 3 to 6 mg per kg of body weight, taken about 60 minutes before training. [3] Pre-workouts containing caffeine have been shown to support both short, intense efforts and longer endurance work. [3] Stimulant-free pre-workouts skip the caffeine and focus on blood flow and pump instead.
They cover different ground. Go deeper in our creatine guide and our guide to choosing a pre-workout.
Does caffeine cancel out creatine?
Not in the way the myth suggests. The research is mixed, and the detail matters. Here's what the studies actually found.
Where the worry comes from
A 1996 study gave 9 men a very high creatine dose (0.5 g per kg a day, about 35 g for a 70 kg person) for 6 days, either on its own or with 5 mg per kg of caffeine every day. Creatine alone supported 10 to 23% more muscle force during repeated hard contractions. With daily caffeine added, that extra force didn't show up, even though muscle phosphocreatine rose by a similar 4 to 6% in both groups. [4]
That small study is where the "caffeine cancels creatine" idea started.
What the reviews show since
Two systematic reviews, each pulling together ten studies, plus two individual trials give a clearer picture: timing is what matters. Caffeine before training, once creatine stores are full, works well; daily caffeine during a loading week adds little. [5] [6] [7] [8]
Timing is what matters
When caffeine and creatine work together
3 of 5 studies
Caffeine about an hour before exercise, after creatine stores are full
Extra benefit on top of creatine in 3 of 5 studies [5]. Creatine loading doesn't seem to interfere with what caffeine does on the day [6].
After 6 days of loading
5 mg per kg caffeine an hour before a hard treadmill run: time to exhaustion 222 seconds vs about 200 seconds, and the effort felt easier early in the run [7].
After 5 days of loading
6 mg per kg caffeine: higher sprint power on a bike than creatine alone in the early sprints [8].
1 of 5 studies
Daily caffeine during the 5 to 6 days of loading
Extra benefit in only 1 of 5 studies [5]. Researchers suggest it could interfere with creatine's effect [6].
Why they might clash
No one has shown that caffeine stops creatine getting into your muscles. Researchers think any clash is more likely from caffeine and creatine affecting how quickly muscles relax between contractions in opposite directions, or from stomach upset when both are taken in large amounts together. [9] In one study of 54 men loading with 20 g of creatine a day, four people taking about 300 mg of caffeine a day alongside it reported mild stomach discomfort. No one did in the other groups. [10]
Taken together over weeks
Pre-workouts containing both have also been studied over weeks. Men who took a pre-workout containing caffeine and creatine every day for 28 days improved their leg press strength, with no adverse changes in kidney or liver blood markers, heart rate or blood pressure. [11]
What this means for you
Use both, and keep it simple:
- Take a steady 3 to 5 g of creatine a day, rather than a high-dose loading week alongside lots of caffeine.
- Use caffeine where it shines: before your session, on training days.
- If you do load, go easy on caffeine that week. See creatine loading vs daily dose.
How to take them together
A simple daily routine
Take creatine every day to keep your stores topped up, and save the pre-workout for training days. You don't need a caffeinated pre-workout on a rest day just to get your creatine in. [1] Two serves of pre-workout means two serves of caffeine and everything else in the formula, so never double it to reach a creatine target.
Creatine every day
Pre-workout on training days only
Training day
Rest day
- Mixing tip: same shaker is fine; taking creatine at a different time makes it easier to keep track of both [12].
- If your pre-workout contains creatine: count it towards your 3 to 5 g and top up with plain creatine.
- Late caffeine: in a 2025 trial, 400 mg caffeine within 12 hours of bedtime delayed sleep, and 4 hours before bed it lowered how well people felt they slept by about a third; 100 mg 4 hours before bed had no measurable effect [13].
How much caffeine is too much?
Add up everything: pre-workout, coffee, energy drinks, cola, tea and any other supplements. Food Standards Australia New Zealand guidance for adults is: [2]
| Who | Maximum caffeine |
|---|---|
| Adults | 400 mg a day from all sources, and no more than 200 mg in a single serve |
| Pregnant or breastfeeding | 200 mg a day from all sources |
| Under 18 | 3 mg per kg in a single serve (120 mg for a 40 kg teen) |
These are ceilings, not targets. Researchers suggest as little as 2 mg per kg may be enough to support performance. [3] Concentrated caffeine powders are banned from retail sale in NZ and Australia because a single teaspoon can hold as much caffeine as 25 to 50 cups of coffee. [2] Avoid them altogether. Our guide to caffeine in pre-workout goes deeper.
Training in the evening?
Late caffeine can cost you sleep (see the routine timeline above), so if you train late, a stimulant-free pre-workout is the easy fix. [13] The sleep guide explains why sleep matters for your results, and our stimulant vs stimulant-free guide compares your options.
Who it suits
First-timers
Start with creatine, then add a pre-workout. One new product at a time tells you what suits you.
People training regularly
Creatine every day and a pre-workout on training days is a well-supported combination for strength and power training.
Evening trainers and caffeine-sensitive people
Creatine plus a stimulant-free pre-workout gives you the pump and focus without the caffeine.
Plant-based eaters
About half your daily creatine normally comes from food, mainly meat and fish, so a supplement is a practical way to top up. [1]
Check first
Caffeinated pre-workouts aren't suitable for anyone under 18, pregnant or breastfeeding, or sensitive to caffeine. Talk to your GP or pharmacist before combining them if you take medication or have a heart, blood pressure or kidney condition. If you compete in tested sport, run every product through your organisation's supplement process. For chest pain, a racing heart that won't settle, trouble breathing or collapse, call 111.
Our picks
For creatine every day: Inception Labs Creatine Monohydrate. Made with Creapure®, a German-made creatine monohydrate, micronised for smooth mixing, HPLC verified for purity and banned substance tested. One 6 g scoop gives you 5 g of creatine. No stimulants, so it supports strength, power and training capacity on training days and rest days alike, in Pineapple, Lemon Lime and Mango.
For energy and focus on training days: Inception Labs Valor Pre-Workout. A high-performance pre-workout with caffeine anhydrous, beta-alanine, L-tyrosine, Alpha GPC and S7®. It supports energy, mental focus, endurance and muscle pump. It contains no creatine, so pair it with your daily creatine scoop. Each 11 g serve has 350 mg of caffeine, 3,200 mg of beta-alanine and 200 mg of bitter orange, so start with half a serve (175 mg of caffeine) and count it in your daily total.
For stimulant-free sessions: Inception Labs Aether Stim Free / Pump. A stimulant-free pump formula with 8,000 mg of L-citrulline malate per 13 g serve, plus Nitrosigine®, betaine and taurine. It supports nitric oxide production, blood flow, endurance and focus. Being stimulant-free, it suits evening sessions, and it can be stacked with Valor to further support nitric oxide production and pump. Both are available together as the Valor and Aether bundle.
For creatine every day
Inception Labs Creatine Monohydrate 500g
- Rating
- 4.8
- Per serve
- $0.84
For energy and focus on training days
Inception Labs Valor Pre-Workout
- Rating
- 4.8
- Per serve
- $4.50
For stimulant-free sessions
Inception Labs Aether Stim-Free Pump Formula
- Rating
- 4.8
- Per serve
- $3.00
Pineapple, Lemon Lime and Mango flavours are available across all three, so you can match them up.
Want a plan built around you?
Inception Nutrition builds your supplements, nutrition and lifestyle into one plan around your goals, your routine and the foods you like, with weekly check-ins wherever you are in NZ. Not sure where to start? Take their free metabolic audit. Not sure which product suits you? Try our Supplement Finder or email us at info@supplementsolutions.co.nz. No question is too basic.
References
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Sources shown: the research is linked in the references. Product details and doses come from the brand. Product suggestions show what’s available now. Last updated 22 October 2026.
This guide is general information, not a diagnosis or medical advice. Take products as directed, and check with a qualified health professional first if you're pregnant, breastfeeding, taking medication or managing a health condition.
