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Metabolic Health · Longevity

Metformin

A daily oral that supports glucose balance, mitochondrial efficiency, and metabolic flexibility — one of the most-studied molecules in modern medicine.

From $39 / month
Lab-verified 503A / 503B accredited Clinician-reviewed
A clean editorial product photograph for Metformin in soft natural light
Form
Oral tablet
Cadence
Once or twice daily
Onset
First effects in 2–4 weeks
Pharmacy
503A / 503B accredited
What it is

An old molecule, used carefully.

Metformin is an oral biguanide that's been used clinically for more than sixty years and studied across millions of patient-years. It primarily lowers hepatic glucose output, improves insulin sensitivity, and influences cellular energy regulation through pathways like AMPK — the same pathway activated by exercise and caloric restriction.

Beyond its primary use in glucose management, it's increasingly part of clinician-guided longevity protocols because of its effects on mitochondrial efficiency, inflammation, and metabolic flexibility. None of those effects are dramatic week to week — metformin is a slow, durable lever, not a fast switch.

Your clinician begins at a low dose (typically 500 mg with the largest meal) and titrates upward as tolerated. Extended-release formulations dramatically reduce gastrointestinal side effects compared to immediate-release, and that's what we use by default unless there's a specific reason not to.

Metformin pairs well with GLP-1 protocols, lifestyle anchors, and other longevity tools. It is not a weight-loss drug, but improved insulin sensitivity often supports metabolic outcomes downstream.

Week by week

What to expect, in real time.

Every member's curve is a little different. The shape below is the typical clinician-guided arc.

1

Week 1 · Starting dose

You begin at 500 mg with the largest meal of the day. The gut takes about a week to acclimate.

2

Week 4 · Titration

Your clinician reviews tolerance and may increase to twice-daily dosing. Most GI symptoms resolve at this stage.

3

Week 12 · Re-evaluation

First formal check-in: labs (A1c, fasting insulin), tolerance, and any other markers your clinician is tracking.

4

Week 24+ · Maintenance

Ongoing dosing is steady-state. Some members run continuously; others cycle. Your clinician will guide the rhythm.

Who it's appropriate for

Honest eligibility — before you ever pay.

Metformin isn't for everyone, and we don't pretend otherwise. Your clinician will confirm fit during your eligibility review.

A good fit for

  • Adults with insulin resistance, prediabetes, or related metabolic markers.
  • Members building a longevity protocol who want a foundational oral.
  • People pairing it with a GLP-1 or other metabolic intervention.
  • Anyone comfortable with daily oral dosing alongside meals.

Not appropriate for

  • Severe renal impairment (eGFR below 30) or end-stage kidney disease.
  • Acute or chronic metabolic acidosis, including diabetic ketoacidosis.
  • Severe hepatic impairment or active alcohol-related liver disease.
  • People scheduled for iodinated contrast imaging — temporary pause is required.
Common effects · what we do about them

What can happen — and how your clinician helps.

Common

GI upset

Loose stools, nausea, or stomach discomfort are most common in the first week or two. Extended-release formulation, slow titration, and dosing with food usually resolve it.

Common

Metallic taste

A faint metallic note in the mouth is reported by some members and tends to fade after the first few weeks.

Occasional

B12 reduction

Long-term metformin can modestly reduce vitamin B12 absorption. Your clinician monitors levels and supplements when warranted.

Rare

Lactic acidosis

Extremely rare and tied to specific underlying conditions. Eligibility screening rules out the relevant risk factors before prescribing.

Pricing transparency

One flat price. No surprises.

Membership
$39/mo

Billed monthly. Pause or cancel from your dashboard in one click. Final price is set after clinician review and may vary based on dose and protocol.

Included
  • Clinician review & ongoing protocol
  • Medication and routine supplies
  • Temperature-controlled shipping
  • Async messaging with your clinician
  • Lab certificates of analysis on your dashboard
Not included
  • Insurance coverage (this is a cash-pay membership)
  • External lab fees if your clinician orders bloodwork
Metformin FAQ

Treatment-specific questions.

Will metformin help me lose weight?
Metformin is not primarily a weight-loss drug. Some members notice modest weight changes through improved insulin sensitivity, but the bigger lever for body composition is typically GLP-1 protocols or lifestyle interventions. Your clinician will frame realistic expectations.
Do I have to take it forever?
Not necessarily. Some members run continuously as part of a longevity protocol; others use it for a season alongside other changes. Your clinician will discuss timing and tapering when appropriate.
Why extended-release rather than immediate-release?
Extended-release reduces GI side effects substantially and supports better adherence. Most members do better on it. There are specific clinical situations where immediate-release is preferred, and your clinician will explain if that applies to you.
Can I drink alcohol on metformin?
Moderate alcohol is generally fine for most members, but heavy or binge drinking is not — both for general health and because alcohol stresses pathways metformin already touches. Your clinician will give specific guidance for your situation.
Will it interact with my other medications?
Metformin has a relatively clean interaction profile, but it's worth a full review. Your clinician will check your medication list before prescribing, with particular attention to imaging contrast and other glucose-lowering drugs.
Can I take it with a GLP-1?
Yes — metformin and GLP-1 agonists like semaglutide or tirzepatide are commonly paired. They work through different mechanisms and are often more effective together than either alone. Your clinician will design the combination if appropriate.
Often paired with

Members who chose Metformin often pair it with…

Ready when you are

A promise is just a plan with a witness.

Take the twelve-minute eligibility review. A licensed clinician will read your intake, recommend a protocol — or tell you honestly that we're not the right fit. Either way, you'll know within a day.