Creatine vs. protein: Which is better, post-workout, and more

Both creatine and protein powder are supplements that people can use before or after exercise. Both supplements may aid in muscle recovery and enhance exercise performance.

Protein and creatine have different functions and may benefit some people. However, for best results, people need to take the correct dosage at the right time.

Creatine, an amino acid derivative found mainly in muscles (and also present in small, steady amounts in the brain and other organs), provides energy for various cell functions. It is most beneficial for shorter, high intensity workouts.

Protein powder is an easy way to quickly consume enough protein after workouts. Taking leucine-rich protein, such as whey protein, after exercise

Read more to learn about the differences between creatine and protein, their benefits, and which one to take after working out.

Creatine and protein powder are two supplements people can take to enhance exercise performance and recovery.

Creatine

Creatine is an amino acid derivative that is naturally present in muscles. The body makes it from the amino acids arginine, glycine, and methionine. Additionally, people can get it by eating red meat, fish, and taking supplements.

During high intensity exercise, creatine provides energy and produces adenosine triphosphate (ATP). ATP is an energy-storing compound found in all of the cells in the body. Its breakdown releases energy for various cell functions, such as muscle contractions.

Some people who do high intensity exercise choose to take creatine as a supplement. It comes in different forms, with creatine monohydrate being the most common.

In the nutritional supplement market, people can find other forms, including:

• creatine citrate
• creatine hydrochloride
• creatine pyruvate
• creatine malate
• sodium creatine phosphate

Protein

Protein is a macronutrient that plays an important role in muscle growth and development. Most people consume their protein through food sources, such as:

• meat
• eggs
• seafood
• beans
• peas
• lentils
• nuts
• seeds
• soy products

Supplements are an easy way to increase protein intake, but they are not a replacement for food sources. However, they are a convenient form of high quality protein, especially if a person has a busy schedule.

Protein supplements usually come in powder form. A person can mix the powder with water or milk to make a protein shake, blend it in smoothies or shakes, and add it to cereals and baked goods.

There are multiple types of protein powder, including:

• whey
• casein
• egg

Plant-based types include:

• soy
• pea
• hemp
• brown rice

Many athletes use creatine supplements to enhance sports performance and aid exercise recovery. People can also use protein powder after workouts to promote muscle recovery.

Creatine

Research has shown that creatine can increase lean muscle mass and exercise capacity, which is a person’s maximum athletic ability. It works best when used with short, high intensity workouts.

Creatine can improve specific aspects of exercise, making it useful for athletes in certain sports. For example, it may improve power in anaerobic exercise and

Protein

Some people may also take protein powder after a workout to support muscle growth and recovery.

Experts

If your goal is to build muscle, protein is the most important supplement, because your body uses it to repair and grow muscles after exercise.

Creatine, on the other hand, helps in a different way. It gives your muscles more energy during short, hard workouts, which can help you lift a little heavier or do more reps.

Over time, that extra effort can lead to small increases in muscle and strength.

Because they do different jobs, many people take both protein and creatine. For timing, it doesn’t matter much whether you take protein or creatine before or after a workout. What matters most is getting enough protein and taking creatine consistently each day.

Taking a low daily dose of creatine for 28–30 days may help increase the amount of this amino acid in muscles.

In a 2021 study, participants took 3 grams (g) of creatine every day for 28 days. The researchers report that this regimen improved exercise performance. Experts also demonstrated that taking 20 g of creatine for 5–7 days results in a similar increase in muscle creatine levels.

Other experts recommend a method called creatine loading, which involves starting with a larger dose for several days before reducing to a maintenance dose.

An example of this regimen is taking 20 g per day for a short time, followed by a 5 g dose for 28 to 30 days. Most experts advise splitting the larger 20 g dose into multiple smaller doses.

The 2025–2030 Dietary Guidelines for Americans recommend adults aim for about 1.2–1.6 grams of protein per kilogram of body weight per day, higher than the previous RDA of 0.8 g/kg/day. People who exercise regularly may need even more protein, around 1.5–2 times the old RDA, to support muscle repair and growth.

For optimal muscle protein synthesis after workouts, it is recommended to consume 20–25 grams of protein from food or a protein supplement.

Most commercial protein powders provide about this amount in a single scoop. The guidelines also emphasize including high quality protein at each meal from both animal and plant sources to support overall health and lean muscle mass.

Creatine and protein supplementation may provide specific benefits that support certain types of training. In clinical studies, creatine may help people who practice heavy-resistance training.

People who exercise regularly require more protein than the recommended dietary allowance suggests. Before a person begins taking supplements, it is advisable to contact a doctor or registered dietitian.