Supplement analysis backed by scientific evidence · PT

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Limited evidenceGut health

Asafoetida (Hing)

A pungent resin used as a digestive spice. Two small old trials pooled positively for IBS, but they used homeopathic-style dilutions and Cochrane rated that same evidence very low certainty.

Evidence last reviewed: August 2026

What the science says

  • Pooled benefit in IBS with constipation Limited evidence

    A systematic review and meta-analysis of Western herbal medicines in IBS named asafoetida one of only three preparations with replicated positive results: global symptom improvement in 73% of 63 asafoetida participants versus 45% of 66 on placebo at two weeks.

  • The same trials are rated very low certainty Limited evidence

    The Cochrane review of homeopathy for IBS classified those asafoetida studies as clinical homeopathy, judged their risk of bias unclear to high, and rated the evidence very low certainty. The asafoetida-plus-nux-vomica arm was not significantly better than placebo.

  • A modern trial in functional dyspepsia Limited evidence

    A 2025 randomized, double-blind, placebo-controlled trial of Ferula asafoetida oleo-gum resin reported improvement in dyspepsia symptoms with accompanying microbiome changes. It is a single trial awaiting replication.

Dosage & safety

Studied doseCulinary use is a pinch (roughly 250 mg) added to food. Standardised oleo-gum resin extracts are typically dosed at 200–250 mg twice daily.
SafetyCan cause gas, diarrhoea and headache. Reported to lower blood pressure and affect clotting, so use caution with anticoagulants and stop before surgery. Avoid in pregnancy, and never give it to infants — asafoetida has been linked to methaemoglobinaemia in babies.

Scientific references

Where to buy

View on iHerb

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