Evidence-based·Last reviewed May 30, 2026·How we grade evidence

African Mango

Botanical

Useful mainly for few clear users; weak, single-source evidence for weight and metabolic markers.

Quick decision guide

May help most

few clear users; weak, single-source evidence for weight and metabolic markers

Common dosing range

150–300 mg IGOB-131 extract twice daily before meals

When to expect effects

Weeks

Watch out for

May lower blood sugar; monitor if diabetic

What is it

African mango refers to the seed (kernel) of Irvingia gabonensis, a tree native to West and Central Africa. Standardized seed extracts (often labeled IGOB-131) are marketed as weight-loss supplements, with claims based on early small trials suggesting effects on body weight, cholesterol, and blood sugar.

Is it worth it for you?

Use this as a quick fit check, not a diagnosis.

Worth considering if…

You accept weak, unreplicated evidence

You use a standardized IGOB-131 extract before meals

You pair it with diet and activity, not as a standalone fix

Probably skip if…

You want a proven weight-loss aid

You are pregnant or breastfeeding

You expect meaningful results without lifestyle changes

Evidence at a glance

Goal	Effect	Best fit	Time
cholesterol and lipids Limited Evidence	Reported reductions, unreliable	adults with elevated lipids, as an adjunct only	Weeks
weight loss Mixed Evidence	Reported large but unreliable	overweight adults, alongside diet and activity	Weeks

cholesterol and lipids

Limited Evidence

Effect: Reported reductions, unreliable
Best fit: adults with elevated lipids, as an adjunct only
Time: Weeks

weight loss

Mixed Evidence

Effect: Reported large but unreliable
Best fit: overweight adults, alongside diet and activity
Time: Weeks

Evidence for 2 uses

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

cholesterol and lipids

Biomarker support

Limited Evidence

The same small trials reported lower total and LDL cholesterol with African mango extract. These are biomarker changes from a single research source, not confirmed clinical outcomes. Independent data are absent.

Effect size

Reported reductions, unreliable

Time to effect

Weeks

Best fit

adults with elevated lipids, as an adjunct only

Bottom line: Reported lipid changes are biomarker-level and unconfirmed; not a lipid treatment.

Evidence is mixed

Lipid findings share the same single-source limitation as the weight data.

SourceNgondi et al., 2005 — PMC· conflicting

SourceNgondi et al., 2005 — PMC

weight loss

Supplement benefit

Mixed Evidence

Small trials, almost all from one group in Cameroon, reported reductions in body weight and waist circumference with IGOB-131 extract. A 2013 systematic review concluded the evidence is insufficient to support firm conclusions, and independent replication is lacking. Reported effects are large but not credible without confirmation.

Effect size

Reported large but unreliable

Time to effect

Weeks

Best fit

overweight adults, alongside diet and activity

Less likely

those expecting results without lifestyle change

Bottom line: Weight-loss claims rest on weak, unreplicated trials and should be viewed skeptically.

Evidence is mixed

Positive trials come almost exclusively from a single research group, and a systematic review judged the overall evidence insufficient.

SourceNgondi et al., 2005 — PMC· conflicting Nonsa-Ard et al., 2022 — PMC· conflicting

SourceNgondi et al., 2005 — PMC Nonsa-Ard et al., 2022 — PMC

How it works

The proposed mechanism of African mango extract involves several actions: high soluble fiber content (about 14% of seed weight) may delay gastric emptying and absorption of dietary fat; specific compounds in the seed may inhibit alpha-amylase, slowing carbohydrate digestion; and the seed has been reported to affect adipocyte differentiation and leptin levels in laboratory studies. Clinical trials, almost all conducted by a small group of researchers in Cameroon, have shown notable effects on weight, waist circumference, and metabolic markers. However, larger and independent trials are lacking, and a systematic review in 2013 concluded that current evidence is insufficient to support firm conclusions about effectiveness.

How to take it

1. Typical dose

150–300 mg of IGOB-131 standardized extract twice daily

2. Timing

30–60 minutes before main meals

3. With food

Before meals, with a full glass of water

4. How long to try

Trial several weeks; reassess given weak evidence

What to track

Body weight and waist circumference

Appetite

Blood glucose (if diabetic)

GI tolerance

2 commercial forms

Compare the main delivery options and what they’re best suited for.

IGOB-131 standardized extract

The most-studied form, used in nearly all clinical trials. Typically dosed at 150 mg twice daily.

Standardized to fiber and active components

Irvingia gabonensis seed powder

Less standardized; may be used in some traditional preparations.

Variable potency depending on source

Safety

Know the common side effects, key cautions, and who should avoid it.

Common side effects

HeadacheSleep disturbanceMild GI symptomsFlatulence

Who should avoid it

Pregnant or breastfeeding women
People with diabetes (monitor blood sugar closely)

Pregnancy & breastfeeding

Avoid in pregnancy and breastfeeding due to insufficient safety data.

Interactions

Diabetes medications (insulin, sulfonylureas)Moderate

May add to glucose-lowering effects

Cholesterol-lowering drugsMinor

May amplify lipid effects

Oral medications (timing)Minor

Fiber may slow absorption; separate by 1–2 hours

Food sources

Food	Amount	%DV
Irvingia gabonensis seed kernels (used as cooking thickener in West Africa)	concentrated source	—

Irvingia gabonensis seed kernels (used as cooking thickener in West Africa)

Amount: concentrated source
%DV: —

Choosing a product

What to look for on the label — and what to be skeptical of.

Look for…

Standardized IGOB-131 extract

Clear Irvingia gabonensis seed source

Stated extract amount per dose

Be skeptical of…

Effortless or rapid fat loss

Clinically proven weight-loss breakthrough

Replaces diet and exercise

Frequently asked questions

Is African mango proven to help with weight loss?⌄

Early studies suggest benefit, but most evidence comes from a single research group. Independent replication is limited, so confidence is moderate at best.

Is African mango the same as the mangoes I eat?⌄

No. It refers to Irvingia gabonensis, a different species. The supplement uses the seed kernel, not the fruit flesh.

Is IGOB-131 important?⌄

It's the proprietary extract used in most clinical trials. Products without this standardization may differ in active content.

Will African mango interact with my medications?⌄

Its blood-sugar and cholesterol effects may add to those of diabetes and lipid medications. Fiber may slow absorption of other drugs. Separate dosing by 1-2 hours.

How long should I try African mango?⌄

Most trials have lasted 10-12 weeks. If you don't see effects in this timeframe, continued supplementation may not be useful.

References by claim

weight loss

Ngondi et al., 2005 — PMC (2005) link

Nonsa-Ard et al., 2022 — PMC (2022) link

Track African Mango with Pilora

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

Coming to App Store

Evidence-based·Last reviewed May 30, 2026·Evidence current as of May 30, 2026·How we grade evidence

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.