Creatine for Teens and Older Adults: Safety Guide

Creatine for older adults is one of the better-researched supplements: paired with regular strength training, it can help people over 50 gain a little more muscle and strength than training alone. For teens it is a different answer, because Australian sports dietitians recommend food first for young athletes, and creatine sports foods sold in Australia must be labelled as not suitable for children under 15. This guide covers what the research shows, the safety checks for each age group, and how to choose a creatine in Australia if it suits you.

One thing first: if you have a medical condition, take regular medicines, or are buying for someone under 18, talk to your GP before starting creatine.

Creatine for older adults vs teens at a glance

Why muscle matters more as you get older

From middle age, most people slowly lose muscle mass and strength. When the loss is large enough to affect daily life, it is called sarcopenia. Less muscle can make stairs, carrying shopping and getting up from a chair harder, and it can affect balance.

The most reliable way to hold on to muscle is regular strength training plus enough protein. Creatine is not a replacement for either. It is a helper that may let you get a bit more out of the training you already do.

Your muscles store creatine as phosphocreatine, a quick energy source for short, hard efforts such as a set of leg presses or a quick climb up a flight of stairs. Taking creatine every day tops up those stores, which can help you do slightly more work per session. Over weeks and months, that extra work is where the muscle and strength gains come from.

What the research says about creatine for older adults

A 2017 meta-analysis pooled 22 studies with 721 men and women whose average ages ranged from 57 to 70. Everyone did resistance training, and half also took creatine. The creatine groups gained about 1.37 kg more lean tissue mass on average, with small extra gains in chest press and leg press strength.

A few points keep this in perspective:

• Training matters. The clear benefits in these studies came from creatine plus strength training. Creatine on its own, without training, has much weaker evidence.
• The gains are modest. About 1.4 kg of extra lean mass is useful, but it will not transform your body on its own. Some of the early gain on the scales is water stored in muscle.
• Bone and brain research is mixed. Studies on creatine and bone density in older adults have given mixed results, and memory research is early. We do not recommend buying creatine for either reason.

The ISSN position stand also notes that creatine monohydrate is the most studied form and that older adults are one of the groups most likely to benefit when it is combined with training. For more on how much to take, see our guide to creatine dosage.

Is creatine safe for older adults?

For healthy adults, research reviews have not found harm from creatine monohydrate at the usual 3 to 5 g a day, including in studies that ran for months to years. There are still a few things to know before you start:

• Kidneys and blood tests. Creatine can raise the creatinine number on a routine blood test, because creatinine is what creatine breaks down into. That can look like a kidney problem when it is not. Tell your GP you take creatine before any blood test, and do not take it if you have kidney disease unless your doctor says it is fine.
• Medicines and conditions. If you take regular medicines, have diabetes, heart, liver or kidney conditions, or are unsure, talk to your GP first.
• Water weight. Expect a small rise on the scales in the first few weeks as your muscles store more water. This is normal and is not fat. Our post on creatine and water retention explains more.
• Stomach upset. Big single doses can upset some stomachs. Sticking to 3 to 5 g a day with food or a drink usually avoids this.

Creatine for teens: what Australian experts say

The question we hear most from parents is whether creatine is safe for teenagers. In Australia, the guidance points the same way:

• Sports Dietitians Australia says in its position statement on adolescent athletes that nutrient needs should be met by core foods rather than supplements, because supplements over-emphasise what they can do compared with training and diet.
• Food Standards Australia New Zealand requires formulated supplementary sports foods, which includes most creatine powders, to carry the statement "not suitable for children under 15 years of age or pregnant women: should only be used under medical or dietetic supervision".

Some research suggests creatine may be safe in older teens, but there is far less evidence than in adults. For a 15 to 17 year old who trains seriously, the best gains still come from a good program, regular meals with protein and carbs, and enough sleep. If a teen is keen on creatine, book a chat with a GP or an accredited sports dietitian first. We are happy to help in store, but we will point young athletes to food and training basics first.

How to take creatine after 50

If your GP is happy and you are doing strength training, keep it simple:

• Choose creatine monohydrate. It is the form used in almost all of the research, and it sits in Group A of the AIS Sports Supplement Framework.
• Take 3 to 5 g a day, every day. Loading is optional. Our guide on creatine loading explains both ways.
• Mix it into anything. Unflavoured creatine dissolves into water, juice, coffee or a protein shake. Timing matters far less than taking it daily.
• Pick a single-ingredient product. Plain creatine monohydrate with nothing else added is easier to check with your GP.

Here are three single-ingredient options we stock, with approximate cost per 5 g:

Cost per 5 g is worked out from the tub size, so use it as a guide. Prices are at the time of writing.

Our pick

For most people over 50 who lift weights, Legit Creatine Monohydrate 500 g is the simple choice: one ingredient, a 5 g scoop and one of our best sellers in the last six months. If you would rather have a branded raw material, ATP Science Creapure uses Creapure creatine monohydrate and costs more per serve, but is just as simple. ON Micronized Creatine is a good middle option that stirs in easily with a spoon.

For teens, our pick is no supplement for now. Spend the money on good food and a solid training plan, and talk to a GP or sports dietitian if creatine comes up.

Compare more options in our best creatine in Australia guide or browse the full creatine range.

How our price compares

Here is what the same products cost at other Australian supplement stores, so you can check the difference yourself.

Supps247 prices come from our website. Other prices were checked on the websites of Nutrition Warehouse, Australian Sports Nutrition (ASN), Elite Supps and Supplement Mart on 29 October 2026 (same product and size, price for one unit) and can change at any time. Not listed means we could not find that exact product on their site. Not confirmed means we could not confirm the same product and size. Supps247 members can use our Price Match Guarantee against Nutrition Warehouse, ASN, Elite Supps and Supplement Mart: we beat their full price by 5% or match their sale price (conditions apply).

Shop the products in this guide

Legit Creatine Monohydrate 500 g$49.95ATP Science Creapure Creatine 250 g$49.95ON Micronized Creatine 300 g$44.95

Browse all creatine.

FAQs

Is creatine good for people over 60?

It can be, if you also do strength training. A 2017 meta-analysis of 22 studies in adults with average ages from 57 to 70 found creatine plus resistance training added about 1.4 kg of lean mass and small strength gains compared with training alone. Without training the benefit is much less clear. Check with your GP first, especially if you take regular medicines.

Does creatine affect your kidneys?

Research reviews have not found kidney harm in healthy people taking 3 to 5 g a day. Creatine can raise the creatinine result on a blood test, which can look like a kidney problem when it is not, so tell your doctor you take it. If you have kidney disease or reduced kidney function, do not take creatine unless your doctor says it is fine.

Can a 15 year old take creatine?

In Australia, creatine sports foods must be labelled not suitable for children under 15, and Sports Dietitians Australia recommends that young athletes meet their needs with food rather than supplements. For older teens, there is far less research than in adults. Talk to a GP or accredited sports dietitian before a teen starts creatine, and focus on training, meals and sleep first.

How much creatine should an older adult take?

Most adults take 3 to 5 g of creatine monohydrate a day, every day, which matches the ISSN guidance. A loading phase is optional and not needed. Take it with water, juice or a protein shake at any time of day. Your GP may suggest a different amount if you have a medical condition, so ask before you start.

Which creatine is best for older adults?

Plain creatine monohydrate. It is the form used in almost all of the research in older adults, it is good value, and single-ingredient products are easy to check with your GP. Micronised versions such as Legit Creatine Monohydrate mix more easily. You can buy it online in Australia with free shipping on orders of $99.99 or more.

Sources: Chilibeck and colleagues (2017), creatine and resistance training in older adults: meta-analysis; ISSN creatine position stand (2017); Antonio and colleagues (2021), common questions and misconceptions about creatine; Sports Dietitians Australia position statement: sports nutrition for the adolescent athlete (2014); Food Standards Australia New Zealand: sports foods; product labels and brand nutrition panels, checked October 2026.

Order online with Australia-wide delivery, free on orders of $99.99 or more, with Afterpay available at checkout. You can also use click and collect at a store that offers it, or visit a Supps247 store in Melbourne, regional Victoria or Brisbane to compare products in person. Members can use our member price match on full-priced items.

Prices and stock were checked on 29 October 2026 and can change at any time. Always read the label and follow the directions for use. If you have a medical condition, are pregnant or take regular medication, check with your doctor first.

Shop related at Supps247: Creatine, online or at your nearest Supps247 store.