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Creatine: What It Does, Is It Safe, and Should You Take It?

robranellifit
Aug 22
6 min read

Creatine may be one of the most talked-about supplements in fitness.

Some people swear by it. Other people worry it will hurt their kidneys, make them dehydrated, or cause muscle cramps.


So, what is actually true?

The good news is that creatine is also one of the most studied supplements in fitness. Research has given us a pretty good idea of what it does, how to use it, and how safe it is.

Here is what you need to know.



1. What Is Creatine?

Creatine is not a drug or steroid.


It is a substance that your body already makes. Your liver, kidneys, and pancreas help make it. You can also get creatine from foods like meat and fish.


Most of the creatine in your body is stored in your muscles.

Think of creatine like a small battery charger for your muscles.

Your body uses something called ATP for energy.

ATP is very important when you do short and hard work, such as:


  • Lifting a heavy weight

  • Sprinting

  • Jumping

  • Doing a hard set in the gym


The problem is that this quick source of energy does not last very long.

Creatine helps your body rebuild ATP faster.

That can help you perform more hard work during training. Over time, doing more quality work can help you get stronger and build more muscle.

Research continues to support creatine as an effective way to improve certain types of exercise performance.


Coach's Note

Do not think of creatine as a magic muscle powder.

Think of it as a tool.

Creatine can help you train better, but you still need to lift weights, eat well, sleep, and stay consistent.


2. Does Creatine Just Add Water?

This is where many people get confused.


Creatine can cause your body to hold more water inside your muscles.

That is called cellular hydration.


This is one reason you may notice the scale go up after you start taking creatine. Especially with larger loading doses, research shows that early weight gain can come largely from increased body water.


That does not mean you gained body fat.

You may simply have more water stored with your muscles.

When creatine is combined with strength training, it can also help support increases in lean body mass over time.


Coach's Note


Do not panic if the scale goes up a little.

Your scale does not only measure body fat.

It measures everything in your body.

If your weight goes up after starting creatine, look at the full picture:


  • How do your clothes fit?

  • Are you getting stronger?

  • How does your waist look?

  • How do you feel?


One number does not tell the whole story.


3. Does Creatine Dehydrate You?


This may be the biggest creatine myth.

You may have heard:

"Creatine pulls water into your muscles, so it will dehydrate the rest of your body."

It sounds like it could make sense.

But controlled research does not show that normal creatine use causes dehydration.


Studies have found no harmful effect on hydration or the body's ability to control its temperature during exercise.


Some research has even found that creatine may help support the body's water balance and may reduce cramping in some exercise settings.

So you do not need to fear creatine because it puts more water into your muscle cells.


Coach's Note

Still drink water.

Creatine not causing dehydration does not mean water is unimportant.

Drink normally throughout the day and drink more when your body needs it, such as during long workouts or hot weather.


4. Will Creatine Hurt Your Kidneys?

This is another common fear.


For healthy people, research does not show that recommended amounts of creatine damage the kidneys.


A recent review of the research found that creatine can cause a small rise in a blood marker called creatinine without showing a harmful change in kidney filtration.


This is important.


Creatinine is often used to help check kidney health. Because creatine can affect creatinine levels, someone taking creatine may sometimes have a higher reading without actually having kidney damage.


That is one reason your doctor should know which supplements you take.

People who already have kidney problems or are at risk for kidney problems should talk with their healthcare provider before taking creatine.


5. What Are the Real Side Effects?

Creatine is generally well tolerated.


In a large analysis involving hundreds of clinical trials, researchers found no significant overall increase in the frequency of side effects among people taking creatine compared with people taking a placebo.

But that does not mean nobody will ever feel anything.


Some people can experience:


  • Temporary water-weight gain

  • Bloating

  • Stomach discomfort

  • Diarrhea or other GI problems


Stomach problems are more likely when someone takes a large amount at once. Smaller doses can help lower that risk.


Coach's Note

More is not always better.

If 5 grams does the job, taking a giant scoop does not mean you will suddenly get twice the results.

Keep it simple.


6. What Kind of Creatine Should You Take?

You will see many types of creatine for sale.


You do not need to make this complicated.

Creatine monohydrate is the form with the strongest research behind it. It is also widely available and usually inexpensive.


For most healthy adults who choose to supplement, 3–5 grams per day is a simple evidence-based approach.

You also do not need a loading phase.


Taking larger amounts for several days can fill your muscle creatine stores faster, but a steady 3–5 grams per day can get you there over time.

And you do not need to obsess over timing.


The most important thing is taking it consistently.

Taking creatine with a meal is perfectly fine, but you do not need a large amount of sugar or carbohydrates for creatine to work.


Action Steps

Here is the simple plan:


1. Choose creatine monohydrate. You do not need an expensive or fancy form.


2. Take 3–5 grams each day. Take it on workout days and rest days.


3. Stay consistent. Do not worry about finding the "perfect" time.


4. Keep drinking water normally. Creatine does not replace good hydration habits.


5. Do not panic over a small jump on the scale. Some early weight gain can come from increased water stored with your muscles.


6. Pair creatine with strength training. Creatine is a tool. Your training is what gives that tool a job.


7. Choose a quality product. Look for creatine monohydrate from a reputable company and consider products that have been third-party tested.


8. Talk with your healthcare provider when appropriate. Especially if you have kidney disease, take medicines that may affect your kidneys, are pregnant or breastfeeding, are under 18, or have another medical reason to be cautious.


The Bottom Line

Creatine does not need to be complicated.


For most healthy adults, creatine monohydrate is one of the most studied and well-supported sports supplements available.

It helps your body quickly make energy.


That can help you perform better during hard training.

Better training over time can help support strength and muscle growth.


And many of the scary claims you may have heard like creatine automatically causing kidney damage, dehydration, or muscle cramps are not supported by current evidence in healthy adults using it appropriately.


The simple approach?


3–5 grams of creatine monohydrate each day. Train hard. Eat well. Stay hydrated. Stay consistent.

You do not need to make fitness harder than it needs to be.


Sources



Disclaimer:

This article is for general education only. It is not medical advice and does not replace care from a doctor or other qualified healthcare professional. Supplements may not be right for everyone. Talk with your healthcare provider before starting creatine if you have a medical condition, take medications, are pregnant or breastfeeding, are under 18, or have concerns about your kidney or liver health.


 
 
 

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