Creatine Over 40: Your Daily Dose vs What Your Body Makes

For creatine over 40, the usual daily amount is 3 to 5 grams, according to Ubie’s doctor-reviewed guide for women over 40. Three Rivers Concierge Medicine, a concierge medical practice, calls the same range “low doses (3–5 grams a day).”

That amount runs 1 to 5 times what you need each day to hold normal levels. The need figure comes from a review of creatine and aging muscle in PubMed Central (PMC), the National Library of Medicine’s free journal archive.

Your pancreas and kidneys make about 1 gram of that need a day, WebMD reports, so the dose is 3 to 5 times your own output. Over 30 days, the standard dose adds up to 90–150 grams. If you have kidney or liver disease, talk to a clinician before you start.

Verdict: Creatine Over 40 Is an Add-On to Strength Training

Verdict: if nothing on the clinician list below applies, take the standard 3–5 g a day and pair it with resistance training, as the studies cited here did.

The flaw, and the fix: much of the research on performance supplements is done “in young healthy men, but not women, middle-aged and older adults,” per the Office of Dietary Supplements (ODS). The fix: give more weight to studies that enrolled older adults, like the one below.

The strengths: the dose is set and the monthly amount is easy to price. In one study WebMD describes, adults aged 57 to 70 on creatine during resistance training “showed a greater increase in lean tissue mass” than those without it. Lean tissue mass is your body weight minus fat, and it includes muscle. WebMD’s page is reviewed by Sanjay Ponkshe, MD.

Who should check first: anyone with kidney or liver disease, on related medicines, or with concerning symptoms, per Ubie. The full list is below.

What Creatine Does After 40: Nearly 95% Sits in Your Muscles

Creatine is a compound your muscles store and draw on for short, hard efforts. Nearly 95% of it is held in skeletal muscle, the muscles you move on purpose, according to WebMD. So the muscle you keep after 40 is where your creatine lives.

Keeping that muscle gets harder with age. Three Rivers notes that as testosterone and growth hormone fall, holding on to lean muscle and peak performance gets harder.

For women worried about size, Ubie is direct: creatine “does not cause bulky muscles.” Ubie is a health information site, and its page is reviewed by Yoshinori Abe, MD.

You Need 1–3 g a Day: Food Gives About Half, Your Body Makes About 1 g

Your muscles lose a little creatine every day. About 1–2% of the creatine stored in muscle breaks down into creatinine, a waste product that leaves the body in urine, per the PMC review.

Replacing that loss takes 1–3 grams a day, the same review says. About half comes from food such as red meat, seafood and poultry. Your body makes the rest.

So food gives you roughly 0.5–1.5 grams a day, and your own production covers the other half. WebMD’s figure of about 1 gram a day from the pancreas and kidneys falls inside that range. The two sources agree.

Because the food half comes from meat, seafood and poultry, a diet light on those foods brings in less of it.

The Standard 3–5 g Dose Is 1 to 5 Times Your Daily Need

Item	Grams per day	Grams per 30 days	Source
Daily need to hold normal levels	1–3	30–90	PMC review
Food’s share (about half the need)	0.5–1.5	15–45	PMC review
Made by pancreas and kidneys	about 1	about 30	WebMD
Standard supplement dose	3–5	90–150	Ubie

Dose vs need: 3 g ÷ 3 g = 1x and 5 g ÷ 1 g = 5x, so the 3–5 g dose is 1–5 times the 1–3 g daily need.

Dose vs your own output: 3 g ÷ 1 g = 3x and 5 g ÷ 1 g = 5x, so the dose is 3–5 times the about 1 g your pancreas and kidneys make.

Dose vs food: 3 g ÷ 1.5 g = 2x and 5 g ÷ 0.5 g = 10x, so the standard dose is 2–10 times what food supplies.

Per month: 3 g x 30 days = 90 g, and 5 g x 30 days = 150 g.

Why take more than the daily need? As men age, muscle creatine stores fall, especially with lower dietary intake, and “Supplementation helps restore those reserves,” Three Rivers says. Ubie notes stores can also decline in women, especially those who eat less red meat or follow plant-based diets.

The standard dose also turns creatine into a monthly purchase you can price ahead of time. Take each dose with enough fluids, as Ubie advises.

To price any tub, divide its price by its grams to get the cost per gram. Multiply that by 90 for the low end of a month and by 150 for the high end. To see how long a tub lasts, divide its grams by your daily 3 to 5 grams.

Next step: compare tubs by cost per gram in Creatine for Men Over 40: Which Tub Runs Under 10 Cents a Gram?

A Free Routine From the National Institute on Aging (NIA): Aerobic, Strength and Balance

The studies above paired creatine with resistance training, and the training itself is free. NIA’s exercise guide says “it’s important to get all three types: aerobic, muscle-strengthening, and balance.”

1. Aerobic. Walk briskly. NIA’s advice is to “gradually build up to at least 150 minutes of moderate-intensity aerobic activity” each week.
2. Pace check. Try talking as you go. If you’re breathing hard but can still hold a conversation easily, NIA says it’s likely moderate intensity.
3. Strength and balance. NIA counts each as its own type, and yoga, dancing or water aerobics mix more than one. For strength moves, use the free plan linked below.
4. Warm-up and cool-down. Do a little light activity, such as easy walking, before and after aerobic work, per NIA.
5. Stop signs. Aerobic activity should not cause dizziness, chest pain or pressure, or nausea, NIA says. Drink water when you sweat, unless your doctor has told you to limit fluids.

Free plans to start with: Strength Training Over 40: See the $0 Version and How Much Zone 2 Cardio Per Week: Building to 150 Minutes.

Kidney or Liver Disease, Related Medicines, Worrying Symptoms: Ask First

If any item below applies to you, talk to a clinician before your first dose.

• Kidney disease or liver disease. Ubie’s guidance puts these first.
• Medicines related to those conditions. Ubie says “related medications” without naming them, so ask which ones count.
• Concerning symptoms. Ubie includes anyone who has them.
• Any medical condition. ODS, part of the National Institutes of Health, says talking to an expert is important if you “have any medical conditions.”
• Any medicine you take. ODS also says to find out whether medicines you take might interact with a supplement you’re considering.

Ubie wrote its list for women. The ODS advice is for any adult, men included.

Next step: read more in Nutrition and supplements on FortyFit.

FAQ: Should Over 40s Take Creatine? What Does It Do for Men Over 40?

Should over 40s take creatine?

If nothing on the clinician list applies, 3–5 g a day is the standard dose. The study results on this page paired it with resistance training. More guides: Nutrition and Supplements.

What does creatine do for men over 40?

Three Rivers cites clinical studies of men in their 50s and 60s. There, creatine plus supervised strength training improved leg press, bench press and total body lean mass more than training alone. In the adults aged 57 to 70 that WebMD describes, creatine during resistance training brought a greater gain in lean tissue mass than training without it.

When should I check with a clinician?

Check before your first dose if anything on the safety list applies. Also talk to one if you have concerning symptoms, per Ubie.

This page is general information from public health and medical sources, not medical advice.