How Long Does Creatine Stay In Your System?

Regularly taking creatine supplements may aid workout routines and improve strength. Knowing how long creatine stays in your body can help you determine your supplement routine or what to expect if you stop supplementing.  

How Long Creatine Lasts In Your Body

There is little research on how long creatine stays in your system once you stop supplementing, and estimates vary.

Generally speaking, creatine stores in your muscles don’t immediately disappear if you stop taking supplements. It can take a while for creatine levels to return to baseline.

Some studies have reported that it takes four to six weeks for elevated creatine stores in the muscle to return to their baseline level. 

Understanding how creatine is stored, used, and broken down in the body can further underscore how it works and why its effects can last even after you stop taking it:

• Storage: Almost all (95%) of the creatine your body receives or produces is stored in the skeletal muscles to provide them with energy. The rest is stored in the brain, liver, kidneys, and testes. 
• Muscle saturation: For most people, as you ingest more creatine, the muscles become more saturated with it.
• Slow breakdown: About 1–2% of creatine in the muscles is broken down into creatinine daily. Creatinine then gets excreted from the body through the kidneys. The breakdown rate of creatine is faster in people with higher muscle mass and physical activity levels. 

Benefits of Taking Creatine

Creatine is a well-researched nutritional supplement with proven benefits for improving physical performance. Some studies suggest it can improve exercise performance by 10–20% in various high-intensity exercise tasks. 

Creatine supplementation has also been studied for its effects on brain health, as creatine is an essential compound for brain functioning.

For example, one review found that taking creatine improved performance on reasoning and memory tasks. However, the effect is small, and more research is needed to prove creatine’s role in brain health.

The benefits of creatine supplementation have been found in both women and men, across a range of ages, although most research has been conducted in men.

People with lower baseline levels of creatine seem to get more benefit from starting creatine supplements than those who have higher baseline levels of creatine.

How Much Creatine Does Your Body Need?

The average person needs about 2 grams (g) of creatine per day. The body naturally produces about half of the required amount in the liver and kidneys. The other half must come from food or supplements. You can get creatine from animal-based foods, such as red meat, fish, and dairy products, or supplements, usually creatine monohydrate. 

When you consume 1–2 g of creatine per day, your muscles’ creatine stores are about 60–80% full, or saturated. Creatine supplementation can help the stores become fully saturated.

Once creatine levels reach saturation, 3–5 g of creatine per day can maintain creatine stores.

However, some people need more to maintain their creatine levels, including:

• Certain athletes: Larger athletes with an intense training program, for example, may need 5–10 g of creatine per day to maintain optimal or maximum creatine stores.
• People with creatine synthesis deficiencies: People may need to take creatine if their body doesn’t make enough of its own.
• Vegans and vegetarians: Since some creatine is derived from animal foods, people who follow a vegan or vegetarian diet may have less creatine stored in their bodies. Compared to non-vegetarians, for example, vegetarians have been reported to have about 20–30% lower stores of creatine.  

What Happens If You Stop Supplementing Creatine?

Stored creatine doesn’t immediately go away if you stop supplementing. Creatine levels will slowly decrease if you stop taking creatine or reduce your intake. Stopping creatine supplementation won’t cause creatine stores to drop below their baseline. 

Baseline creatine stores will continue to be made up of the creatine the body makes on its own plus any creatine consumed through food. Muscle mass gained while taking creatine won’t immediately go away once you stop supplementing or take a break from it. You can maintain your fitness through regular exercise and a balanced diet.