Herb in Thai notifiable formulas

Pomelo Rind

ส้มโอ · Som O

Citrus maxima (Burm.) Merr.

Family: Rutaceae
Part used: peel
Crude drug: Citri Maximae Exocarpium et Mesocarpium Pomelo Rind Synonym Pummelo Rind
In the announcement: Used in 1 notifiable formula

Pomelo Rind, dried exocarp with some unremovable mesocarp — Photo: Forest and Kim Starr · Wikimedia Commons · CC BY 3.0 us · resized

Thai Herbal Pharmacopoeia (THP)

Constituents and quality criteria of Pomelo Rind

Summarised from the Pomelo Rind monograph of the Thai Herbal Pharmacopoeia, Department of Medical Sciences, the standard used to test the dried exocarp with some unremovable mesocarp.

The pharmacopoeia sets no minimum marker content for this herb. Use the raw material quality criteria below for acceptance testing.

Constituents

Pomelo Rind contains flavonoids (e.g., apigenin, hesperidin, and naringin). It also contains volatile oils, coumarins, limonoids, sterols, pectins, etc.

Raw material quality criteria

Foreign matter	Not more than 2.0% w/w
Loss on drying	Not more than 10.0% w/w
Total ash	Not more than 7.0% w/w
Ethanol (50 per cent)-soluble extractive	Not less than 28.0% w/w
Ethanol-soluble extractive	Not less than 10.0% w/w

Storage: Pomelo Rind shall be kept in well-closed containers, protected from light, and stored in a dry place. Before carrying out the physico-chemical tests, Pomelo Rind shall be treated by drying at about 45° for 24 hours. Identi𿿿cation A. Heat 500 mg of the sample, in powder, with 10 mL of methanol in a w.

Source: Thai Herbal Pharmacopoeia, Department of Medical Sciences (online edition, accessed 21 October 2026)Read the full THP monograph

Formulas using Pomelo Rind

1 formula containing Pomelo Rind

Select a formula to see its ingredients and indications. Formula names and indications are a reference translation; the Thai announcement is the legal text.

Ya Hom Thep Chit Fragrant cordial formula for dizziness and palpitationsRelieves subtle wind (lom kong la-iat) causing symptoms such as dizziness, faintness (sawing sawai), palpitations, etc., and nourishes the mind (bamrung duang chit) so that it is refreshedThai traditional medicine
Powder · 1 of 48 ingredients · 4 g

Development potential

Develop Pomelo Rind into a product with the TIBD group

In notifiable formulas1 formulaused in multi-herb formulas

THP raw-material criteria5 testsfor acceptance testing before production

Marker with a minimum contentNot setquality is checked with the raw-material criteria

Three ways forward 1Notify a listed formula2Adapt it through detailed notification3Develop a Category B herbal medicine or Category C health productSee the development pathway

K-API · manufacturing in the group

Extract and manufacture at K-API

The TIBD group plant licensed by the Thai FDA to manufacture herbal products, so extraction and production stay within the group.

See the K-API plant TIBD · consultation

Plan a product with Pomelo Rind

We check whether your formula qualifies for notification, detailed notification or registration with the Thai FDA, then prepare the filing documents.

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