A 60-year-old molecule. The most unexpected data in longevity research.
Metformin has been prescribed for over 60 years and is one of the most studied drugs in existence. But something kept showing up in the long-term data that nobody expected: patients on metformin weren’t just managing their condition. They were showing significantly lower rates of cancer, cardiovascular disease, and cognitive decline than comparable patients on other treatments. In some observational studies, survival outcomes rivaled those of people without any diagnosis at all.
That anomaly launched a new conversation in longevity medicine, and eventually a clinical trial. The TAME trial (Targeting Aging with Metformin) is the first FDA-authorized study designed to treat aging itself as a medical condition. Out of every compound available, metformin is the one they chose.
At Obsidian Genetics, metformin is prescribed as part of a physician-supervised longevity and metabolic health protocol.
Metformin Oral
The numbers that changed the conversation.
Decades of data on one of the most prescribed drugs in history, and the results keep pointing in the same direction.
What metformin is prescribed for.
Three mechanisms. One molecule.
AMPK Activation
Metformin activates AMP-activated protein kinase (AMPK), a master metabolic switch that promotes fat oxidation, glucose uptake, and mitochondrial efficiency. The effect closely mimics what happens during caloric restriction or fasting, without the starvation.
mTOR Pathway Inhibition
By suppressing mTOR, the cellular growth regulator, metformin promotes autophagy: the process by which cells clear out damaged proteins and dysfunctional components. This cellular "cleanup" is one of the most studied mechanisms in aging biology.
Insulin & Glucose Regulation
Metformin lowers circulating insulin and blood glucose by reducing hepatic glucose production. Chronically elevated insulin is a key driver of systemic inflammation, oxidative stress, and accelerated biological aging. Metformin directly counteracts all three.
The TAME Trial.
Targeting aging itself.
The TAME trial (Targeting Aging with Metformin) is widely described as the first clinical trial designed to treat aging as a medical condition, not just its downstream diseases. The American Federation for Aging Research (AFAR) is leading the multi-site study.
The researchers chose metformin. Not a novel biologic. Not a new molecular entity. A generic drug that costs less per month than a dinner out, because the existing data was compelling enough to justify a formal, FDA-supervised longevity trial.
That's the story behind the $75 price tag.
Pricing
Metformin Protocol Pricing
One flat rate. Physician supervision, FDA-approved medication, and ongoing support included.
FDA-approved generic metformin. Physician consultation and provider support included.
Includes: physician consultation · FDA-approved medication · ongoing provider support · free shipping
Safety & considerations.
Metformin has one of the longest and most well-characterized safety profiles of any prescription medication. Your provider will review your health history before prescribing.
Gastrointestinal Effects
Nausea, diarrhea, and GI discomfort are the most commonly reported side effects, particularly when starting or increasing the dose. These are typically transient and can be minimized by taking metformin with food and titrating the dose gradually.
Vitamin B12
Long-term metformin use can reduce B12 absorption. Annual B12 monitoring is recommended. If levels drop, supplementation is straightforward and your provider will advise based on your bloodwork.
Lactic Acidosis
Lactic acidosis is rare but serious, and the risk is elevated in patients with significant kidney or liver impairment, or those who consume alcohol heavily. Your provider will assess kidney function before prescribing and monitor it over time.
Important Considerations
Metformin is not recommended for patients with an eGFR below 30 mL/min (severe kidney impairment) and should be used with caution in patients with eGFR 30–45. It is also not recommended for those with significant liver disease or a history of lactic acidosis. Alcohol should be avoided or minimized during metformin treatment due to increased lactic acidosis risk. Disclose your full medical history during your intake consultation — a prescription will only be issued if your provider determines metformin is appropriate for you.
Frequently asked question
Is metformin safe for people who don't have diabetes?
Yes, and this is precisely what makes the TAME trial so significant. The trial is enrolling non-diabetic adults aged 65–79 to evaluate metformin’s effects on aging itself. Metformin has been prescribed off-label to non-diabetic patients for metabolic health, PCOS, and longevity support for years, with a well-established safety profile across all populations. Your provider will assess your full health history before prescribing.
How long does it take to see results?
Metabolic benefits, including improved insulin sensitivity and blood sugar stabilization, are typically observed within the first few weeks. Appetite changes and mild weight management effects are commonly reported by week 4. The longevity-oriented benefits (cellular repair, reduction in disease risk) are associated with consistent, long-term use. Most providers recommend a minimum 3-month commitment to assess full effect.
What dose will I be prescribed?
Standard protocol begins at 500mg once daily, gradually titrated up to 1,000–2,000mg daily based on tolerance and response. For longevity-focused use, many providers prescribe in the 500–1,000mg daily range, which is lower than typical diabetes doses. Your Obsidian Genetics provider will determine the right starting dose and titration schedule for you based on your health history.
Can I take metformin alongside GLP-1 medications like semaglutide or tirzepatide?
Yes. Metformin and GLP-1 receptor agonists work through different mechanisms and are commonly co-prescribed. The combination can enhance overall metabolic benefit. However, the combination may increase the risk of hypoglycemia in some patients. Your provider will evaluate whether combination therapy is appropriate for you and monitor accordingly.
How should I take metformin to minimize side effects?
Taking metformin with food, particularly with your largest meal of the day, significantly reduces GI side effects. Starting at a lower dose and increasing gradually over 2–4 weeks (as directed by your provider) also helps the body adjust. Most patients find that side effects diminish substantially after the first few weeks.
What if I miss a dose?
If you miss a dose, skip it and resume your next scheduled dose. Do not double up. Unlike some medications, metformin does not require a make-up dose. Consistency over time is more important than any individual dose. If you miss multiple doses, contact your provider before restarting.
Prescription Required. Metformin is a prescription medication. A valid prescription from a licensed healthcare provider is required before any medication is dispensed. Obsidian Genetics facilitates access to board-certified physicians who independently determine whether treatment is appropriate for each patient. We do not guarantee that a prescription will be issued.
FDA-Approved Medication. Metformin is an FDA-approved generic medication. It is not a compounded product. Obsidian Genetics dispenses FDA-approved generic metformin from licensed pharmacies.
Off-Label Use. Metformin is FDA-approved for the management of type 2 diabetes. Its use for longevity, anti-aging, weight management, and other indications referenced on this page is off-label. Off-label prescribing is legal and common medical practice. The TAME trial and other referenced studies represent ongoing or observational research; longevity benefits are not yet FDA-approved indications.
Results Disclaimer. Individual results vary. Clinical data and observational study outcomes referenced on this page may not reflect results for every patient. Mortality and cancer reduction statistics are derived from observational studies and do not establish direct causation. Consult your provider with any questions about your health or treatment plan.
Not Medical Advice. The information on this page is for educational purposes only and does not constitute medical advice.