Creatine for Men Over 40: 3–5 g a Day, Thorne Under 10 Cents a Gram

Buy plain creatine monohydrate and take 3 to 5 grams a day.

Then judge every tub by its price per gram, and take it on top of a free routine of strength work and brisk walking. The sums below use prices from the 2026 guides from Men’s Health and BarBend.

General information from public health and editorial sources, not medical advice. The last section covers who should talk to a clinician before starting.

What changes after 40: lean muscle gets harder to keep

A concierge-medicine clinic article published November 12, 2025 links falling testosterone and growth hormone around 40 to a reduced ability to keep lean muscle. That is one clinic’s summary, not a new study. Still, it explains why creatine comes up so often for this age group.

Creatine is a compound your muscles use for short, hard efforts: a heavy set, a sprint, a flight of stairs taken fast. It is not only for men. BarBend notes that creatine isn’t gender-specific and that men and women alike can use it to boost performance, so the dose and price maths below work the same for any reader.

Creatine does not replace training. That leads to the part that costs nothing.

Start with the free routine: strength work plus 150 aerobic minutes a week

Two habits come first.

Aerobic minutes. The National Institute on Aging advises building up gradually to at least 150 minutes of moderate-intensity aerobic activity a week, with brisk walking as its example. That could be 30 minutes on five days. If you walk very little now, start with walks short enough to finish comfortably, then add a few minutes each week until you reach the target.

Strength work. NIA also lists strength exercise as one of the types that can improve your health and physical ability. Strength work means moving against resistance: dumbbells, a resistance band or your own body weight. Start with a load you can control on every repetition, and make it slightly harder only once that level feels easy.

If you add creatine, it goes on top of these two habits. It doesn’t replace either one.

Monohydrate is the form to buy, and the one you can price gram for gram

BarBend frames the choice as two forms: creatine monohydrate and creatine hydrochloride (HCl). Men’s Health advises choosing pure monohydrate at five grams per serving.

Here’s why that helps your wallet. Every monohydrate tub sells the same compound, so price per gram compares them fairly whatever scoop size each label prints. HCl is a different form. To weigh an HCl product against a monohydrate one, compare the cost of one daily serving as each label directs.

Know one real limit before you buy. The NIH Office of Dietary Supplements notes that much of the research on these supplements was done in young, healthy men rather than middle-aged and older adults. So the evidence for readers over 40 is thinner than the marketing suggests. The practical answer: stay inside the 3–5 g daily range in the clinic article, keep the routine above as the main event, and run the plan past your clinician.

Pick monohydrate. It’s the form Men’s Health recommends, and the price table below can compare it like for like.

Who should skip it: if you know you won’t mix a powder every day, BarBend’s list includes pill and gummy picks. If you’re over 50, BarBend’s pick for that group is Legion Recharge.

3–5 grams a day: a 100-serving tub lasts 100 days

The daily amounts in these sources agree: 3 to 5 grams a day in the clinic article, and five grams per serving in Men’s Health’s advice. One monohydrate pick in Men’s Health’s guide gives 5 grams per serving and holds 100 servings, which Men’s Health says lasts one person at least three months.

The arithmetic:

• 100 servings × 5 g = 500 g of creatine in the tub.
• At 5 g a day: 500 g ÷ 5 g = 100 days, a little over three months.
• At 3 g a day: 500 g ÷ 3 g = about 166 days.

To get that tub’s price per gram, divide its price by 500.

Price per gram, worked out: Thorne under 10 cents, Transparent Labs 30–33 cents

Price per gram = the price of one serving ÷ the grams of creatine in it.

Thorne Creatine Powder: under $0.50 per 5 g serving ÷ 5 g = under $0.10 per gram (Men’s Health) · Transparent Labs Creatine HMB: $1.50–$1.67 per serving ÷ 5 g = $0.30–$0.33 per gram (BarBend), at least 3x Thorne per gram.

Tub	Price as listed	Per 5 g daily serving	Per gram of creatine	30 days at 5 g a day
Thorne Creatine Powder (Men’s Health)	$44 per tub	under $0.50	under $0.10	under $15.00
Transparent Labs Creatine HMB (BarBend)	$1.50–$1.67 per serving	$1.50–$1.67	$0.30–$0.33	$45.00–$50.10
Any 100-serving, 5 g tub (Men’s Health serving data)	your tub price, P	P ÷ 100	P ÷ 500	P × 0.3

These are the prices listed in the 2026 editions of both guides. Prices change, so check the brand’s own page before you buy and put the new price into the bottom row.

Each pick has a catch. Men’s Health notes that Thorne comes in one size only, so you can’t buy it in bulk. If you’d rather buy a bigger tub of another brand, use the bottom row to confirm it really costs less per gram. BarBend calls Transparent Labs “one of the priciest,” and it’s a blend. Each serving adds HMB, a compound the body makes from the amino acid leucine, so part of what you pay buys something other than creatine. If you want creatine alone, that price gap is the cost of the extra ingredient.

Buying checklist: form, dose, certification, flavor and price per gram

BarBend judges creatine on dosage, available flavors and price. Men’s Health adds third-party certification. Add the arithmetic above and you get:

1. Form: pure creatine monohydrate, one of the two forms BarBend names.
2. Dose: a serving that gives 3–5 g of creatine a day. Make sure the label lists creatine alone, not a blend, unless you want the blend.
3. Certification: NSF or Informed Choice, the third-party certifications Men’s Health checks for.
4. Flavor: one you will take every day. BarBend counts the flavors on offer as a buying point.
5. Price per gram: tub price ÷ total grams of creatine. Thorne’s under-10-cents figure in the table is the one to beat.
6. Days per tub: total grams ÷ your daily dose, so you know when to reorder.

Who should check with a doctor first (general information, not medical advice)

The NIH Office of Dietary Supplements advises telling your doctor and pharmacist about any supplements you take, because some can interact with medicines.

Talk with a clinician before you start creatine or the routine above if:

• You take any prescription or over-the-counter medicine.
• You have a long-term health condition or are under a doctor’s care.
• You haven’t exercised regularly in a while and plan to start the walking and strength work.
• You aren’t sure whether a supplement is safe to combine with anything else you take.

If anything feels wrong after you start, stop and ask. A clinician can also help you pick an easy starting level for the routine.