How does rapamycin move through the body in Alzheimer's patients?
Pharmacokinetic analysis of intermittent rapamycin administration in early-stage Alzheimer's Disease
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Weekly dosing leads to stable, predictable levels despite rapamycin’s known high variability in transplant patients.
Rapamycin is infamous for unpredictable absorption and metabolism, requiring careful monitoring in organ recipients. But here, weekly 7 mg in Alzheimer’s patients showed only moderate variability—suggesting simpler dosing may work outside immunosuppression.
Practical Takeaways
For future Alzheimer’s trials, use a 7 mg weekly dose of rapamycin and measure blood levels at 48 hours post-dose.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Weekly dosing leads to stable, predictable levels despite rapamycin’s known high variability in transplant patients.
Rapamycin is infamous for unpredictable absorption and metabolism, requiring careful monitoring in organ recipients. But here, weekly 7 mg in Alzheimer’s patients showed only moderate variability—suggesting simpler dosing may work outside immunosuppression.
Practical Takeaways
For future Alzheimer’s trials, use a 7 mg weekly dose of rapamycin and measure blood levels at 48 hours post-dose.
Publication
Journal
GeroScience
Year
2025
Authors
Helen Annervik Wallgren, M. Kivipelto, P. Plavén-Sigray, J. Svensson
Related Content
Claims (6)
Sirolimus stays in your body for a long time—about 2.5 days—so even if you take it just once a week, it might still be active when you work out again.
Taking a weekly 7 mg dose of rapamycin for early Alzheimer's doesn't vary too much from person to person, so doctors might not need to adjust doses or monitor blood levels in future studies.
For people with early Alzheimer’s taking a weekly 7 mg rapamycin pill, checking their blood 48 hours after the dose gives the most consistent results and best predicts their baseline levels—so that’s the best time to test it.
When people with early Alzheimer's take rapamycin once a week, the drug stays in their body about as long as it does in other groups — around 69 hours — which means it leaves the body at a similar rate even with weekly dosing.
People with early Alzheimer’s who take 7 mg of rapamycin every week seem to have low levels of the drug in their blood before their next dose—so low that it probably won’t weaken their immune system.