Creatine vs protein powder: what is the difference?
Creatine and protein powder are not the same thing, and one does not replace the other. Protein powder is food that supplies the amino acids your muscles are built from. Creatine is a small compound stored in muscle that helps you produce energy for short, hard efforts, so you can do slightly more work in training.
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Key takeaways
- Creatine is not a protein; it is a compound the body makes from three amino acids and stores mostly in skeletal muscle.
- Protein powder is a convenient food that helps you reach a daily protein target, while creatine raises muscle creatine stores at a dose of 3–5 g a day.
- Both have good evidence for adding to muscle and strength gains when they are combined with resistance training.
- You can take creatine and protein powder together, for example mixed in the same shake.
- If your daily protein intake from food is already adequate, protein powder adds little, while creatine works on a different system.
Is creatine a protein?
No. Creatine is made in the liver and kidneys from the amino acids arginine, glycine, and methionine, and the ISSN position stand describes it as a naturally occurring non-protein compound. About 95% of the creatine in your body is stored in skeletal muscle, where it helps recycle ATP, the energy molecule muscles use for short bursts of effort.
Protein is a macronutrient. It provides calories and the full set of amino acids your body uses to build and repair tissue, including muscle. A scoop of protein powder often provides around 20–30 g of protein, depending on the product. A typical creatine serving is 3–5 g of creatine and provides essentially no calories.
Creatine vs whey protein: how do they compare?
| Creatine monohydrate | Whey or other protein powder | |
|---|---|---|
| What it is | A compound stored in muscle | A food made of protein |
| Main job | Supports energy for short, intense efforts | Supplies amino acids to build and repair muscle |
| Typical daily amount | 3–5 g | Depends on your total protein target |
| Calories | Essentially none | About 4 kcal per gram of protein, plus any added carbs or fat |
| Timing | Any time of day, every day | Spread across meals is a common approach |
| Can food replace it? | Only with very large amounts of meat or fish | Yes, if your diet already has enough protein |
The main difference is that protein powder is optional food. You can reach the same protein intake with meals. Creatine is hard to get at supplement doses from food, as our food vs supplements guide explains.
Which is better for muscle gain?
Both help when you train, but they work in different ways, so "better" depends on what you are missing.
- Protein. A 2018 meta-analysis of 49 trials found that protein supplementation during resistance training added modest gains in strength and fat-free mass. Gains in fat-free mass did not improve further once total protein intake went above about 1.6 g per kg of body weight per day. The ISSN suggests 1.4–2.0 g/kg/day for most people who exercise.
- Creatine. The ISSN position stand concludes that creatine monohydrate increases high-intensity exercise capacity and adds to the muscle and strength gains from training. Part of the early weight gain is water inside muscle, which our weight gain guide explains.
In one 11-week trial in resistance-trained men, groups taking creatine, whey, or both all gained more strength than a group taking carbohydrate only. The study was small, and the combined group did not clearly outperform every other group on every measure.
Can you take creatine and protein powder together?
Yes. There is no known problem with mixing creatine into a protein shake, and many people do it because it is an easy daily habit. The protein does not stop the creatine from working. The ISSN position stand notes that taking creatine with carbohydrate, or carbohydrate and protein, has been reported to promote greater creatine retention. This is a minor detail, and daily consistency matters more.
Timing is flexible for both. Taking creatine before or after training makes little difference. What matters is taking it every day, including rest days. If you want more ideas, see what to mix creatine with.
Is creatine in protein powder?
Plain whey or plant protein powder does not contain a meaningful amount of creatine. Some products add creatine as an extra ingredient. If you use one of these, check the label for the amount per serving. Some blends contain less than the usual 3–5 g. You do not need to take extra creatine on top if your shake already provides a full dose.
Should a beginner buy creatine or protein first?
Start with your diet. If you struggle to eat enough protein from meals, a protein powder is a practical fix. If you already eat enough protein, it adds little for muscle growth, based on the 2018 meta-analysis above.
A daily creatine dose is usually inexpensive, and food rarely supplies the same amount. That makes it a reasonable first supplement for someone who trains regularly and already eats enough protein. Neither one is required to make progress. Training consistently and eating enough in total matter more than either product.
If you are under 18, pregnant, breastfeeding, have kidney disease, or take regular medication, talk with a clinician before starting either supplement.
References
- Kreider RB, Kalman DS, Antonio J, et al. (2017). International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. Journal of the International Society of Sports Nutrition, 14:18. doi:10.1186/s12970-017-0173-z
- Jäger R, Kerksick CM, Campbell BI, et al. (2017). International Society of Sports Nutrition position stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14:20. doi:10.1186/s12970-017-0177-8
- Morton RW, Murphy KT, McKellar SR, et al. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. British Journal of Sports Medicine, 52(6):376–384. Read the meta-analysis
- Cribb PJ, Williams AD, Stathis CG, Carey MF, Hayes A (2007). Effects of whey isolate, creatine, and resistance training on muscle hypertrophy. Medicine & Science in Sports & Exercise, 39(2):298–307. doi:10.1249/01.mss.0000247002.32589.ef