Does it matter what you mix creatine powder with?

For most people, it makes no meaningful difference. Water works fine. So does juice, milk or a carbohydrate drink — with one partial exception worth knowing about. The liquid you choose does not change the 3g daily intake, and it does not change the basic mechanism. But a few details are worth getting right.

Does creatine dissolve properly in any liquid?

Creatine monohydrate dissolves slowly in cold water and better in warm. Micronised creatine — ground to a finer particle size — disperses more readily and leaves less grit in the glass. If you find undissolved powder sitting at the bottom, that is a particle-size problem, not a liquid problem. Switching from water to juice does not fix it; using warm liquid or stirring longer does. Our guide on mixing creatine without grit covers this in more detail.

Does orange juice degrade creatine to creatinine?

This one comes up a lot, and the concern is not baseless. Creatine does convert to creatinine — a waste product your body excretes — in acidic conditions. The question is how fast.

The conversion rate in an acidic drink depends on pH, temperature and time. At a pH around 3.5 (roughly that of orange juice) and room temperature, the degradation is measurable but slow. Available evidence suggests that creatine mixed in an acidic drink and consumed within a few minutes shows negligible creatinine formation. Left to sit for several hours, the conversion becomes more meaningful.

The practical rule: mix it and drink it. If you mix creatine with orange juice and take it straight away, you are not losing a significant amount of active creatine. If you pre-mix a bottle and leave it in your bag all day, you are. This applies to any acidic carrier, not just OJ.

Does taking creatine with carbohydrates improve uptake?

There is a plausible mechanism here. Insulin promotes creatine uptake into muscle cells, and carbohydrates raise insulin. Some research from the late 1990s and early 2000s — particularly Green AL et al. (Am J Physiol, 1996;271(5 Pt 1):E821-6) and related work — found that combining creatine with around 90g of simple carbohydrate significantly increased muscle creatine retention compared with creatine alone.

However, the effect size matters and the evidence is mixed. The doses of carbohydrate used in those studies were large. Later work found that a combination of carbohydrate and protein produced a similar insulin response with less sugar. More recent research suggests that for people who are already training and eating adequate carbohydrate, the additional uptake effect is modest at best. The honest position: if you take creatine with a meal or a carbohydrate-containing drink, you may get a marginal benefit; if you take it with plain water, you are not missing much that matters.

Claiming that timing creatine around carbohydrates substantially changes outcomes for most people goes beyond what the evidence supports. Whether to take it with food at all is a separate question — one covered in depth in the piece on taking creatine with food or on an empty stomach.

What about milk?

Milk is close to neutral in pH and contains both protein and carbohydrate. It will not degrade creatine. The protein and lactose together produce an insulin response, so by the logic above, it may be marginally better than plain water. It is also a practical choice if you are already making a protein shake. There is no evidence it is worse than water, and no strong evidence it is meaningfully better.

If you are lactose intolerant, the answer is obvious: skip the milk.

The honest reason any liquid works

Our Creatine Monohydrate Micronised Powder is a single ingredient with no additives, fillers or flavourings. That means nothing in the powder interacts badly with a given liquid. No sweeteners that might react, no flavour compounds that clash. The flexibility to mix with whatever you have to hand is a direct consequence of keeping the formula clean. If you prefer tablets rather than measuring powder, our Creatine Monohydrate 1000mg Tablets remove the mixing question entirely.

What to actually do

• Mix creatine with whatever liquid you enjoy drinking — water, juice, milk or a shake.
• If you use an acidic drink, consume it immediately rather than pre-mixing and leaving it to stand.
• Taking it alongside a meal or a carbohydrate-containing drink may offer a marginal uptake benefit, but is not essential.
• Warm water dissolves creatine faster than cold; if grit is an issue, that is the first thing to try.

The authorised claim stands regardless of what you mix it with: creatine increases physical performance in successive bursts of short-term, high-intensity exercise. The beneficial effect is obtained with a daily intake of 3g of creatine. Consistency of intake matters far more than the glass you stir it into. For questions about whether to take it every day, see the page on creatine on rest days.