Irvingia gabonensis

botanical

What is it

Irvingia gabonensis is the botanical name for African bush mango (also called African mango or wild mango), a tree native to West and Central Africa. Its dried seed kernel, traditionally used in West African cuisine as a soup thickener (called 'ogbono'), is the basis for popular weight-loss supplements.

How it works

Irvingia gabonensis seed contains soluble fiber (about 14% by weight), saturated and unsaturated fats, and various phytochemicals. Proposed mechanisms include delayed gastric emptying, reduced fat absorption, inhibition of carbohydrate-digesting enzymes (alpha-amylase), and effects on adipocyte (fat cell) gene expression that may impact leptin signaling and fat storage. Clinical studies, mostly using the proprietary IGOB-131 extract and conducted by a small research group, have reported improvements in body weight, waist circumference, cholesterol, and blood sugar. Independent replication is limited, and the strength of evidence remains modest. The traditional culinary use of the seed (ogbono soup) provides much lower doses than the standardized extracts.

Evidence for 4 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Weight loss / body composition

Grade C

Moderate evidence

Multiple small randomized trials of IGOB-131 extract have reported significant reductions in weight, waist circumference, and body fat over 8-12 weeks. Independent replication and longer-term trials are needed.

Cholesterol management

Grade C

Moderate evidence

Studies show reductions in total cholesterol, LDL, and triglycerides with supplementation. Findings are consistent across the available trials but most originate from one research group.

Blood sugar / metabolic health

Grade C

Moderate evidence

Trials report reductions in fasting glucose and improved insulin sensitivity markers. Mechanism likely involves soluble-fiber-mediated slowing of carbohydrate absorption.

Leptin / appetite regulation

Grade D

Mixed evidence

Some studies have reported reductions in leptin levels and improved appetite-related outcomes, but the clinical significance is uncertain.

2 commercial forms

IGOB-131 standardized extract

Standardized to fiber and active compounds

The most-studied form, used in published clinical trials. Look for this designation on supplement labels.

Generic Irvingia seed powder

Variable composition

Found in some supplements; clinical efficacy not as well documented as IGOB-131.

Dosage

Most clinical studies have used 150 mg of IGOB-131 standardized extract twice daily, taken before main meals. Some studies have used 300-1050 mg per day in divided doses. There is no formal recommended intake outside of these study designs.

When and how to take it

Most trials have dosed Irvingia 30-60 minutes before main meals to align with proposed effects on appetite, fat absorption, and glycemic response. Take with a full glass of water. Separate from other oral medications by at least 1-2 hours.

Food sources

Food	Amount	%DV
Ogbono soup (West African dish)	traditional culinary use of the seed	—
Irvingia gabonensis kernel (raw or roasted)	rich in fiber and fats	—

Safety

Generally well tolerated in short-term trials (up to 12 weeks). Reported side effects include headache, sleep disturbance, flatulence, and gastrointestinal upset. Long-term safety has not been established. Quality of commercial products varies; non-IGOB-131 products may have different effects.

Who should be cautious

Avoid in pregnancy and breastfeeding. People with diabetes should monitor blood sugar closely. Those taking medications with narrow therapeutic windows should separate doses by 1-2 hours from Irvingia. People with allergies to mango or related fruits may want to be cautious.

Interactions

May enhance the effects of diabetes medications (insulin, sulfonylureas) and lipid-lowering drugs. The fiber content can delay or reduce absorption of oral medications, so timing should be separated. Theoretical interactions with anticoagulants exist due to soluble fiber binding.

Frequently asked questions

Is Irvingia the same as African mango?⌄

Yes. 'African mango' and 'African bush mango' are common names for Irvingia gabonensis.

Why does IGOB-131 matter?⌄

Nearly all published clinical evidence used this specific standardized extract. Products without IGOB-131 may have different active content and unproven clinical effects.

Does eating ogbono soup count?⌄

Culinary doses are much smaller than supplement doses, but traditional consumption provides nutritional value and may contribute modest amounts of the active compounds.

Will Irvingia interfere with my diabetes medication?⌄

It may enhance blood-sugar-lowering effects. Monitor glucose more closely and discuss dosing adjustments with your clinician.

How long does it take to see results?⌄

Clinical trials typically span 8-12 weeks. Effects on weight and waist circumference, if they occur, are usually noticeable in this timeframe.

References

Irvingia gabonensis (Wikidata) — Wikidata link

Track Irvingia gabonensis with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you're pregnant, breastfeeding, on medications, or managing a chronic condition.