Instalab
Acarbose · 25–100mg · generic Precose®

Blunt the post-meal glucose spike.

Acarbose (generic Precose®) blocks the gut enzymes that turn carbs into glucose, flattening every post-meal spike. No hypoglycemia, no weight gain. Prescription and physician follow-up included.

Smaller spikesAfter every carb-containing meal
No crashesWon't drop your blood sugar on its own
25% lessPrediabetes to diabetes (over 3 years)
Acarbose Prescription Review
Acarbose · with every carb-containing meal · titrated for tolerance
Licensed US physician review
12,000+ patients treated
Available in all 50 states
Ongoing titration and follow-up
How it works

From questionnaire to first dose.

No clinic visits. A licensed physician reviews your case, picks the right starting dose, and titrates it for tolerance. We handle labs, refills, and follow-up.

Step 1

2-minute questionnaire

Tell us about your current and recent A1C or fasting glucose, GI history, kidney/liver function, and any prior glucose medications.

Step 2

Physician review

A licensed physician confirms acarbose is appropriate, screens for inflammatory bowel disease and other GI contraindications, and writes your starting prescription. Usually within 1 business day.

Step 3

Prescription sent to your pharmacy

Your physician routes the prescription to the pharmacy of your choice. Generic acarbose is on most formularies.

Step 4

Titration and A1C recheck

Start at 25mg with the first bite of each main meal; step up to 50mg or 100mg every 4 to 8 weeks as tolerated. Recheck A1C at 3 months.

Pricing

What you'll actually pay.

Two line items: Instalab Membership and the acarbose medication itself, dispensed by your pharmacy.

Instalab Membership

Physician oversight, titration management, A1C and lab follow-up, ongoing care

$—/mo

Acarbose

Generic, dispensed by your pharmacy

Cash price$14–32/monthTypical pharmacy cash price
With insurance$0–15/monthTypical copay, if covered

Why pay a membership fee? Acarbose is cheap, but tolerability is everything — most patients need slow titration over 1 to 3 months to find the right dose, and GI side effects benefit from physician adjustment. Membership covers the visits, dose changes, and A1C follow-up. You pick up the prescription at your own pharmacy and pay them directly; labs are billed separately.

Will my insurance cover acarbose?

Acarbose is a tier-1 generic on most commercial and Medicare formularies, so copays are typically $0 to $15 per month. Cash price at most pharmacies is also low — about $10 to $30 per month with a discount card. We send the prescription to whichever pharmacy you'd like; you handle pickup and payment with them directly.

Why membership

Acarbose works. Tolerating it takes ongoing care.

It needs a physician who titrates slowly, manages GI side effects, and rechecks A1C to confirm response. Here's how our team handles that for you.

  1. Week 1Day 1–5

    Physician evaluation and starting prescription

    A licensed physician reviews your glycemic history, GI status, and medications, then writes your starting prescription. Most patients start at 25mg with the first bite of each main meal (3 times daily) to minimize GI side effects.

  2. Week 1–4

    Pickup, first doses, and tolerance check

    Pick up acarbose from your pharmacy. Take it with the first bite of each carb-containing meal. Expect some flatulence, soft stools, or abdominal bloating in the first few weeks — this is the medication working as undigested carbs ferment in the colon. It usually improves with continued use.

  3. Week 4–8

    Titration up

    If you are tolerating 25mg, your physician steps you up to 50mg with each meal. Some patients stop here; others titrate to 100mg with each meal over the following months.

  4. Month 3+

    A1C recheck and ongoing care

    Recheck A1C at 3 months. Expect about a 0.5% drop on monotherapy. Acarbose pairs well with metformin and other agents. We keep your prescription active and recheck periodically. Labs are billed separately.

Without membership

Schedule a PCP visit. Get a 50mg or 100mg starting script. Quit in two weeks because the GI effects are intolerable. Decide acarbose does not work for you.

With Instalab

2-minute questionnaire. Slow, deliberate titration from 25mg. Physician message away if side effects flare. Refills handled. Most patients tolerate the medication when titrated properly.

About the medication

Take it with the first bite. Every carb-containing meal.

Acarbose only works at the meal you take it with. Skip it and you skip the effect for that meal. Most patients build the habit in two weeks.

  • Take with the first biteAcarbose must be in your gut as the carbs arrive to block their breakdown. Taking it after the meal misses most of the effect.
  • Skip pure-protein or pure-fat mealsAcarbose only acts on carbs — starches and table sugar. A meal with no carbs needs no acarbose.
  • GI effects fade with continued useGas, soft stools, and bloating are common in the first 2 to 4 weeks as your gut microbiome adapts. Most patients see significant improvement with continued daily use.
  • Carry glucose for hypoglycemiaIf you're on insulin or a sulfonylurea and have a low, acarbose blocks sucrose breakdown — so candy or fruit juice may not raise your sugar fast enough. Use pure glucose tablets or gel instead.
Why acarbose

A glucose-spike blocker. Glycemia-neutral on its own.

Acarbose blocks the brush-border alpha-glucosidase enzymes in the small intestine, the ones that break starch and sucrose into absorbable glucose. The unabsorbed carbs travel further down the gut and are mostly fermented by your microbiome. Net effect: each meal produces a smaller, flatter glucose curve. Because acarbose doesn't stimulate insulin release, it doesn't cause hypoglycemia on its own.

  • Targets the post-meal glucose spikeOther agents lower fasting glucose; acarbose specifically blunts the post-meal spike. For patients whose A1C is driven mostly by post-meal excursions, this is a clean intervention.
  • Glycemia-neutral on its ownNo hypoglycemia risk as monotherapy. No weight gain. Cardiovascular safety established decades ago. It pairs cleanly with metformin or other agents when more reduction is needed.
  • A long longevity-research track recordAcarbose is one of the most consistent life-extending interventions in mouse studies, with hypothesized mechanisms via glucose-spike blunting and microbiome shifts. Human longevity evidence is observational, but the safety and metabolic data are decades deep.

The STOP-NIDDM trial

Published in The Lancet in 2002, STOP-NIDDM randomized 1,429 patients with impaired glucose tolerance to acarbose 100mg three times daily or placebo. Over a mean 3.3 years, acarbose reduced the risk of progression to type 2 diabetes by 25%. It remains one of the few diabetes-prevention trials of any oral medication.

1,429
Patients with IGT randomized
25%
Reduction in progression to T2D
3.3 yrs
Mean follow-up

Acarbose is a prescription medicine. Important safety information applies. The dominant side effects are gastrointestinal — most resolve with slow titration. Avoid acarbose with chronic intestinal disorders.

Ready when you are

Blunt the spike. Stay on plan.

Answer the questionnaire. A physician reviews your case and, if acarbose is appropriate, prescribes it with a slow-titration plan. We handle refills and follow-up so the medication actually works for you.

No commitment to treatment.