Black Catechu
Botanical Description & Habitat
Acacia catechu
Family
Leguminosae
Common Names
acacia catechu
Habitat
Indigenous to Eastern India and Burma
Medicinal Parts
Extract of fresh bark and sapwood
Historical Properties & Uses
In folklore, black catechu is used as an astringent and antiseptic in the treatment of diarrhea, hemorrhoids, varicose veins, ulcerations of mouth and throat (laryngitis, pharyngitis), etc.
Method of Action
Black Catechu Has Astringent and Antiseptic Action
Black catechu, as obtained from bark and sapwood, contains 20-35% catechutannic acid, 2-10% of acacatechin, quercetin and catechu-red. As such, it is one of the most concentrated sources of tannic acid-like substances known to man. This would account for the strong astringency and antiseptic properties of the substance.
Drug Interactions & Precautions
Possible Interactions
The topical application of the astringent herb black catechu, in conjunction with the acne product tretinoin (retinoic acid, vitamin a acid) may adversely affect the skin.
1. The tannin in this herb may potentiate the antibiotic activity of echinacea.
2. The tannin in a tea made from this herb may be inactivated by the addition of milk or cream.
Safety Factors & Toxicity
In prescribed amounts, there is no significant toxicity, but see under discussion of tannic acid possible problems. Do not use with alkaloids, lime water, metallic salts and gelatin.
Preparation & Administration
Dried extract
0.3 - 2 grams or by infusion three times daily
Tincture
1:5 in 45% alcohol; 2.5 - 5 ml three times daily
Note: This Herbal Preparation information is a summary of data from books and articles by various authors. It is not intended to replace the advice or attention of health care professionals.
References
Mowrey, Daniel B., Ph.D. Exper. Psych., Brigham Young University. Director of Nebo Institute of Herbal Sciences. Director of Behavior Change Agent Training Institute. Director of Research, Nova Corp.
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