How does Irvingia gabonensis work for weight loss?

Irvingia gabonensis seed extract influences weight management through several mechanisms. It modulates adipokines—specifically increasing adiponectin and reducing leptin resistance—which helps regulate metabolism and appetite. Additionally, its high fiber content delays gastric emptying to promote satiety, while compounds like irvingin may inhibit enzymes involved in fat cell formation. Evidence Level: C.

Does African mango interact with diabetes medications?

Yes, Irvingia gabonensis may interact with diabetes medications. Because the herb can lower blood glucose levels, taking it alongside prescription diabetes drugs (like insulin or oral hypoglycemics) may cause blood sugar to drop too low (hypoglycemia). Close monitoring of blood glucose levels is essential, and patients should consult a healthcare provider before combining these treatments. Evidence Level: C.

What is the recommended dosage for Irvingia gabonensis?

The standard adult dosage for Irvingia gabonensis seed extract is typically 150 mg to 300 mg taken twice daily. It should be consumed 15 to 30 minutes before meals to maximize its effects on satiety and gastric delay. Dosage recommendations are based on clinical studies for weight management; however, individual needs may vary. Evidence Level: C.

Is Irvingia gabonensis safe during pregnancy and breastfeeding?

No, Irvingia gabonensis is considered unsafe during pregnancy and breastfeeding. There is insufficient reliable safety data regarding its use in these populations. Because the herb affects metabolic hormones and blood sugar regulation, it is best avoided while pregnant or nursing to prevent unforeseen complications for the developing fetus or infant. Evidence Level: D.

What are the side effects of taking African mango supplements?

Common side effects of Irvingia gabonensis supplementation include gastrointestinal disturbances such as gas, bloating, and flatulence, largely due to its high fiber content. Some users report headaches, sleep difficulties (insomnia), or dry mouth. These symptoms are generally mild and often subside as the body adjusts to the increased fiber intake. Evidence Level: C.

Irvingia Gabonensis (Irvingia gabonensis)

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Irvingia gabonensis, also known as the African bush mango, is a multipurpose tropical African tree used for food and medicine [PMID:31366215, PMID:38395180]. It is primarily investigated for its potential to reduce body weight and improve metabolic parameters [PMID:31855111, PMID:19254366].

Background

Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill. is a multipurpose tree native to tropical Africa, including Nigeria, Gabon, Cameroon, and Equatorial Guinea [PMID:38395180]. It is commonly referred to as the 'bush mango', 'wild mango', 'dika nut', or 'ogbono' [PMID:31366215, PMID:38395180].

Traditional uses

Different parts of the tree are employed in traditional medicine [PMID:38395180]. Specifically, the Mende tribe of Sierra Leone uses the stem bark to relieve pain [PMID:7776661].

Active compounds

The plant contains various phytochemicals, including terminalin isolated from the seeds [PMID:35204821], and phenolic compounds such as ellagic acid, quercetin, kaempferol, and apigenin found in the stem bark [PMID:29381472]. Seed kernels are rich in oil (63%-69% crude fat), primarily composed of myristic and lauric acids [PMID:31366215]. Other identified components include flavonoid glycosides and ellagic acid derivatives in the defatted seed kernel [PMID:36318869].

Mechanism of action

Terminalin from I. gabonensis stimulates glucose uptake by inhibiting protein tyrosine phosphatases (PTPs) [PMID:35204821]. It is hypothesized to promote weight loss by increasing fatty acid breakdown and inhibiting fatty acid synthesis [PMID:31855111]. Stem bark extracts have demonstrated in vitro inhibition of alpha-amylase, alpha-glucosidase, and pancreatic lipase [PMID:38751710].

Clinical evidence

Evidence AOverweight and Obesity

Statistically significant reductions in body weight and waist circumference were reported across multiple RCTs [PMID:23419021]. One RCT showed significant reductions in body weight and metabolic parameters with 150 mg of IGOB131 daily [PMID:19254366].

Evidence BMetabolic Syndrome (MetS)

Administration of 150 mg twice daily for 90 days resulted in significant decreases in waist circumference [PMID:29336718].

Evidence CGlycemic Control

Clinical trials have shown effects in decreasing glucose and cholesterol concentrations [PMID:27076875].

Safety & adverse effects

Dietary supplements are generally considered to have a low toxicity profile [PMID:36479472]. No specific adverse effects for I. gabonensis were detailed in the provided abstracts.

Dosage & administration

In clinical trials, dosages have included 150 mg once daily [PMID:19254366], 150 mg twice daily [PMID:29336718], or 300 mg once daily [PMID:36364907]. Consult a healthcare provider.

Evidence summary

The evidence for weight loss and metabolic improvement is supported by systematic reviews and RCTs, though some reviews note high risk of bias in several of the included trials [PMID:31855111, PMID:23419021].

PubMed sources

1.PMID: 36479472 (2022) — Dietary supplements for obesity. · Journal of preventive medicine and hygiene
2.PMID: 34762005 (2022) — Biochemical studies of enzyme-induced browning of African bush mango (Irvingia gabonensis) fruit pulp. · Preparative biochemistry & biotechnology
3.PMID: 38395180 (2024) — Irvingia gabonensis baill. (African Mango): A comprehensive review of its ethnopharmacological significance, unveiling its long-standing history and therapeutic potential. · Journal of ethnopharmacology
4.PMID: 31366215 (2020) — Food applications of Irvingia gabonensis (Aubry-Lecomte ex. O'Rorke) Baill., the 'bush mango': A review. · Critical reviews in food science and nutrition
5.PMID: 35204821 (2022)

Irvingia Gabonensis

Sources & Citations