If you've just picked up your first tub of creatine, you've probably come across the term "loading phase" and wondered whether it's something you actually need to do or just an extra step you can skip.
The short answer: it depends on your goals and your timeline.
The creatine loading phase is a short-term strategy that can saturate your muscles with creatine in about a week, compared to the three to four weeks it takes with a standard daily dose. Both approaches work. Both get you to the same endpoint. The only real difference is how fast you get there and whether the higher doses agree with your body.
This guide breaks down exactly what the loading phase is, how to do it correctly, what side effects to expect, and how to decide which approach is right for you.
Table of Contents:
- What Is the Creatine Loading Phase?
- How to Do the Creatine Loading Phase
- Is the Creatine Loading Phase Necessary?
- Side Effects of the Creatine Loading Phase
- Who May Benefit from Using a Loading Phase?
What Is the Creatine Loading Phase?
A creatine loading phase is a short-term strategy in which a higher daily dose of creatine, typically between 20-25 grams, is taken to quickly saturate muscle creatine stores, which is the overall goal of creatine supplementation.*
This initial loading phase is then typically followed by a “maintenance dose” of 3-5 grams per day.
While loading phases used to be more commonly used in creatine supplementation, healthcare providers now tend to recommend smaller maintenance doses, since loading doses are more likely to trigger side effects like water weight gain and digestive symptoms.
How to Do the Creatine Loading Phase
The standard loading protocol typically involves consuming a larger dose of creatine several times a day until muscle cells are fully saturated.
How Much to Take and For How Long
During a loading phase, you’ll take a high dose of creatine, typically between 20-25 grams per day.
This amount is split evenly into 4 separate doses, either 5 grams four times per day or 6.25 grams four times per day, depending on total intake.
In order to fully saturate muscle stores, a loading dose is typically taken for at least 5 days. After muscle stores are saturated, you can drop down to a smaller maintenance dose of creatine.
Why Divided Doses Matter
Divide your loading dose into 4–5 servings. This is because single doses of creatine over 10 grams are more likely to trigger gastrointestinal symptoms like diarrhea and stomach discomfort.
At higher doses, creatine isn’t absorbed as efficiently. Any excess can remain in the intestines, where it draws in water and may lead to gastrointestinal side effects.
For loading, a micronized product like Micronized Creatine Monohydrate dissolves more completely than standard creatine, which matters when you're taking 4 doses a day and need each one to mix cleanly.
What to Eat and Drink During Loading
When you’re taking creatine, including loading doses, there are no specific dietary recommendations or restrictions.
Research suggests that taking your creatine supplement with a meal or snack containing proteins or carbs may help your body retain more creatine. However, it doesn’t appear to enhance performance beyond taking creatine monohydrate on its own.
For specific guidance on hydration during creatine use, see how much water should I drink on creatine.
What Happens After the Loading Phase?
After taking a loading dose of creatine for 5-7 days, you’ll then move into a maintenance phase. A maintenance dose of creatine is 3-5 grams per day.
Taking a daily maintenance dose of creatine helps maintain full muscle saturation and is considered safe for long-term use, with research showing it can be taken daily for up to 5 years without adverse effects.
Is the Creatine Loading Phase Necessary?
No, the loading phase isn’t necessary. Though it takes much longer, taking a smaller daily maintenance dose is just as effective for saturating muscle stores.
Loading vs. Not Loading
With a loading phase, you’ll achieve full muscle saturation within 5-7 days. If you take a 3-5 gram maintenance dose, you’ll still reach muscle saturation, but it will take much longer.
Studies show that maintenance doses saturate muscle stores within 4 weeks.
Why Maintenance Doses are Best for Most People
Even though it takes longer to saturate muscle stores when using maintenance doses of creatine, this method is recommended over a loading phase for most people.
This is because taking higher doses of creatine, such as loading doses, is more likely to cause side effects, like water retention and diarrhea.
Side Effects of the Creatine Loading Phase
Creatine loading phases are more likely to cause side effects than maintenance doses. Here are some of the most common.
Water Weight During Loading
Loading doses of creatine can lead to temporary water retention, which may cause a bloated feeling in some people.
As an osmotically active compound, creatine draws water into muscle cells when it’s absorbed, which may result in a short-term weight increase of 2.2–6.6 pounds (1–3 kg).
Studies show that this increase in water weight is more likely to occur with higher intakes, such as 20 grams or more per day.
GI Discomfort and How to Prevent It
Higher doses of creatine are also more likely to cause GI symptoms, such as bloating, gas, and diarrhea.
As noted earlier, loading doses of creatine are less efficiently absorbed, and any excess remains in the intestines, where it draws in water and may trigger these digestive symptoms.
Smaller doses, such as 3–5 grams, are less likely to cause these side effects because they’re more easily absorbed. If you’re taking higher amounts, splitting them into smaller doses throughout the day and ensuring the creatine is fully dissolved before drinking it may help reduce digestive discomfort.
Does Loading Cause Long-Term Side Effects?
Any of the side effects you may experience with a loading dose of creatine, such as water weight gain, bloating, or diarrhea, are temporary.
For example, the water weight gain that some people experience when taking loading doses usually only lasts for a few days.
Creatine is considered one of the safest and most well-researched of all dietary supplements and hasn’t been linked to any serious short or long-term health risks.
Who May Benefit from Using a Loading Phase?
A creatine loading phase may make sense for some people, such as those who want quicker results and users who tolerate high doses well.
Competitive Athletes on a Timeline
If you’re on a strict timeline and want to experience the benefits of creatine as quickly as possible, you may want to consider a loading dose.
Loading doses saturate creatine muscle stores in days, whereas a standard maintenance dose typically takes several weeks to achieve the same effect. Since the loading phase is the fastest way to achieve muscle saturation, it remains the best option for those who are preparing for a short-term training goal.
People Who Want Fast Results
Using a loading dose can saturate muscle creatine stores much faster than maintenance doses, meaning you may start seeing results sooner.
That said, you can still see results quickly without loading. Research suggests that even with a daily maintenance dose, improvements may begin in as little as two weeks. For example, a 2019 study that included 18 young men found that those taking creatine without a loading phase showed greater strength gains after two weeks compared with a placebo group.
Loading Phase vs. Daily Maintenance — Which Is Right for You?
While both approaches end in the same result, whether or not you should use a loading or maintenance dose depends on a few factors.
When deciding between a loading or maintenance dose, you should consider how your body handles taking larger doses of creatine. It’s important to consider side effects, like whether you experience water weight gain, diarrhea, and stomach discomfort when taking loading doses.
Timing also matters, as people who want to saturate their muscle stores as quickly as possible can benefit from using a loading phase.
Frequently Asked Questions
Basics
What is the creatine loading phase?
A creatine loading phase is a short-term strategy in which a higher daily dose of creatine is taken to quickly saturate muscle creatine stores.
How long does the creatine loading phase last?
A creatine loading phase lasts between 5-7 days.
Protocol
How much creatine should I take during loading?
Typical loading doses range from 20-25 grams per day.
How many times a day should I take creatine when loading?
Loading doses are usually split into 4 equal doses spread throughout the day.
Necessity
Is the creatine loading phase necessary?
No, the loading phase isn’t necessary. You can achieve the same results using a smaller maintenance dose for a longer time period.
What happens if I skip the loading phase?
It will take longer to achieve muscle saturation.
Side Effects
Does the loading phase cause bloating?
It can cause water retention in some people, which can make you feel bloated.
Why did I gain weight during the loading phase?
Loading doses of creatine have been shown to cause temporary water weight gain in some people.
Conclusion and Guidance
A creatine loading phase is a short-term strategy that involves consuming 20–25 grams of creatine per day, split into 4 evenly spaced doses, over a period of 5–7 days.
While a loading phase can fill your muscles with creatine faster, it’s not necessary for most people. It's also more likely to cause side effects when taking higher doses.
However, it can still be a worthwhile strategy for many people. It all depends on how soon you need the boost in performance.
If you’re looking for a high-quality creatine monohydrate supplement, check out 1st Phorm’s Micronized Creatine Monohydrate or see our guide on how to take creatine monohydrate to learn more.
If you have any questions in the meantime, don't hesitate to reach out. We have a full team of NASM Certified Personal Trainers and Nutrition Coaches right here in St. Louis, Missouri.
Just give us a call at 1-800-409-9732 or send us an email at CustomerService@1stPhorm.com. We're available Monday through Friday from 6 AM to 8 PM Central and Saturday & Sunday from 9 AM to 7 PM Central. We'll be more than happy to help in any way we can!
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
