Rapamycin vs Acarbose
Written by Aaron CuhaReviewed Sep 2026
The short answer
Two of the strongest performers in the mouse program built to catch false alarms, tested the same way. Acarbose gave one of the largest lifespan gains in male mice there, and has almost no human ageing data at all.
- Rapamycin people
- 25
- Rapamycin nulls
- 0
- Acarbose people
- 0
- Acarbose nulls
- 0
Dose
Approved medicine. No human dose established for unlabelled uses
Labeled amounts sit on the prescribing information. This page records what trials measured, not a personal dose.
FDA-approved (Rapamune); use for longevity is off-label (not what it is approved for) and investigational
Dose
No human dose established
No published study on this page has given this compound to people and reported a result.
2 human studies where nobody was given it
First-hand reports are counted on each profile and never added together. This page sets two published records side by side. It does not pick a winner.
Column A
RapamycinRapamycin (Sirolimus, mTOR inhibitor)
An approved drug that blocks mTOR, a growth switch in cells. It makes many kinds of animals live longer. Some people take low, spaced-out doses for ageing, off-label. Studies in people are small.
Column B
AcarboseAcarbose (alpha-glucosidase inhibitor)
An old, cheap diabetes pill that slows how fast starch turns into sugar. In people, a large heart study found no heart benefit, and it has never been tested for ageing. In the US government's mouse program, it made male mice live 6 to 22 percent longer.
Side by side, on the facts we can check
| What we compare | Rapamycin | Acarbose |
|---|---|---|
| Category | Longevity | Longevity |
| FDA status | FDA-approved (Rapamune); use for longevity is off-label (not what it is approved for) and investigational | Approved for type 2 diabetes. The original US brand was discontinued and generic versions are sold. In Canada, the original brand was taken off the market in 2023, and a generic is available. |
| Half-life | ~60 hours | About 2 hours; acts locally in the gut with minimal systemic absorption |
| Molecular weight | 914.2 Da | 645.6 Da |
| How it works | It blocks the mTOR pathway. That copies part of what eating less does to cells, and it boosts cell clean-up and upkeep. | It blocks gut enzymes called alpha-glucosidases, so complex carbs break down more slowly and blood sugar rises less after a meal. The undigested carbs reach the large bowel, where gut bacteria ferment them. That causes the usual side effects, and it may also add to the effect on blood sugar and body chemistry. |
| Studies in people | 3 | 2 |
| Evidence | Limited: 2 completed trials, 25 people given it | Preliminary: 2 human studies where nobody was given it |
| Legal status, US | FDA-approved (for its labeled use), prescription only | Prescription only; approved for type 2 diabetes |
Frequently asked questions
What is the difference between Rapamycin and Acarbose?
Rapamycin: An approved drug that blocks mTOR, a growth switch in cells. It makes many kinds of animals live longer. Some people take low, spaced-out doses for ageing, off-label. Studies in people are small. Acarbose: An old, cheap diabetes pill that slows how fast starch turns into sugar. In people, a large heart study found no heart benefit, and it has never been tested for ageing. In the US government's mouse program, it made male mice live 6 to 22 percent longer.
Which has stronger research evidence, Rapamycin or Acarbose?
Each compound gets a band worked out from facts we counted, with the math shown. Rapamycin is Limited (2 completed trials, 25 people given it). Acarbose is Preliminary (2 human studies where nobody was given it). That counts how much has been done in people. It does not rate whether either one works, and neither one is called the winner.
Are Rapamycin and Acarbose FDA-approved?
Rapamycin: FDA-approved (Rapamune); use for longevity is off-label (not what it is approved for) and investigational. Acarbose: Approved for type 2 diabetes. The original US brand was discontinued and generic versions are sold. In Canada, the original brand was taken off the market in 2023, and a generic is available..
Related posts
Blog articles that cover Rapamycin or Acarbose, newest first.
- Longevity / Sep 27, 2026 / 12 minPeptides for Longevity: What the Evidence Actually Shows in 2026
- Longevity / Sep 27, 2026 / 9 minSenolytics in 2026: Dasatinib plus Quercetin, Fisetin, and What Human Trials Have Shown
- Longevity / Sep 27, 2026 / 9 minThe Rapamycin Dosing Debate: What PEARL Tested, the Bioavailability Problem, and What Is Unproven
Reviewed Sep 2026. This page puts two published records side by side. It is for learning, and it is not medical advice. When this site shows a dose, it is the dose a trial or a clinic actually used, or what people say they did, with the source attached. None of it tells you what to take.