Biohacking + longevity
Sirolimus
(Rapamycin)
mTOR inhibitor that blocks the cellular aging pathway responsible for senescent cell accumulation, inflammatory damage, and age-related disease progression.
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Overview
Pharmacology
Sirolimus is a macrolide lactone originally isolated from Streptomyces hygroscopicus in soil on Easter Island. It is orally bioavailable with rapid gastrointestinal absorption and extensive tissue distribution. At anti-aging doses (1–6 mg weekly), plasma concentrations remain well below transplant-level thresholds, producing immunomodulatory rather than immunosuppressive effects. Sirolimus is metabolized by CYP3A4 and transported by P-glycoprotein, making it sensitive to interactions with CYP3A4 inhibitors and inducers.
Mechanism of Action
Sirolimus forms a complex with the intracellular immunophilin FKBP-12, which then binds and inhibits mTORC1 — the mechanistic target of rapamycin complex 1. mTORC1 is a serine/threonine kinase that acts as the cell's primary nutrient and growth sensor, driving cell proliferation, protein synthesis, and suppression of autophagy when chronically active. By inhibiting mTORC1, sirolimus triggers two key anti-aging mechanisms:
Autophagy activation — Cells initiate self-cleaning, degrading, and recycling damaged proteins, dysfunctional mitochondria, and accumulated cellular debris that would otherwise impair cell function and drive inflammation.
Geroconversion blockade — mTOR drives the conversion of growth-arrested aging cells into fully senescent, pro-inflammatory "zombie cells." Sirolimus interrupts this process, slowing the accumulation of senescent cells and reducing the inflammatory secretions (SASP) that degrade surrounding healthy tissue.
At weekly pulse dosing, these effects are achieved without the continuous mTOR suppression that produces immunosuppression at transplant doses — preserving immune surveillance while delivering the longevity signal.
Oral
Taken orally once per week
Information presented here is for educational purposes only and not intended to replace or substitute guidance from a healthcare provider. Compounded medications are not FDA-approved nor evaluated by the FDA for safety, efficacy, or quality.
Benefits
Longevity Signal Modulation
Inhibits the primary growth pathway linked to accelerated biological aging
Cellular Inflammation Defense
Reduces SASP secretions from senescent cells that chronically inflame tissue
Immune Recalibration
At weekly pulse dose, shifts from immunosuppression to immune optimization and enhanced surveillance
Mitochondrial Protection
Autophagy clears dysfunctional mitochondria, preserving cellular energy output
Neuroprotective Aging Defense
mTOR inhibition is linked to reduced progression of age-related cognitive decline
Individual results may vary. Benefits described are based on clinical and pharmacological evidence and do not constitute a guarantee of treatment outcomes. All treatment requires evaluation and approval by a licensed provider.
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FAQs
What is Sirolimus?
Sirolimus is a prescription therapy used for healthy aging support.
Who should use Sirolimus?
Patients seeking support for healthy aging support may qualify after evaluation by a licensed provider.
Does Sirolimus require a prescription?
Yes. Sirolimus is a prescription-only medication. All treatment begins with an evaluation by a licensed medical provider through an online consultation. Upon approval, your prescription is sent directly to a licensed US compounding pharmacy and shipped to your door. No clinic visits required.
What are the possible side effects?
At weekly anti-aging doses, the most commonly reported side effects are mouth ulcers, mild acneiform rash, and occasional stomach upset. The more serious side effects seen in transplant patients-thrombocytopenia, severe immunosuppression, impaired wound healing — are associated with daily high-dose use, not weekly pulse dosing.
Who should not use Sirolimus?
Sirolimus should be avoided in patients with active infections, those on other immunosuppressive therapies, patients with severe hepatic impairment, and women who are pregnant or planning to become pregnant. It is also contraindicated in patients with hypersensitivity to sirolimus or its components.
Are there any drug interactions?
Yes. Sirolimus is metabolized by CYP3A4. Strong CYP3A4 inhibitors (azole antifungals, clarithromycin, grapefruit juice) can significantly increase sirolimus levels. Strong inducers (rifampin, St. John's Wort) can reduce levels by over 90%. Always disclose all medications to your provider before starting.
Is Sirolimus safe if I have a pre-existing medical condition?
It depends on the condition. Sirolimus requires careful evaluation in patients with diabetes, hyperlipidemia, kidney disease, or liver impairment, as it can affect lipid levels, blood glucose, and kidney function. Patients with a history of cancer should be evaluated individually — mTOR inhibition has anti-tumor properties in some contexts but requires provider oversight. Active infections and concurrent immunosuppressive therapy are contraindications. Your provider will review your full medical history, current medications, and lab results before prescribing to determine if sirolimus is appropriate for you.
How long do I take it?
Sirolimus for longevity is an ongoing protocol with no defined endpoint. Most providers monitor with labs every 3 months (lipid panel, CBC, metabolic panel) and continue indefinitely as long as it is well tolerated.
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