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Syn.: Allamanda cathartica Linn, Allamanda hendersonii Bull, Allamanda augustifolia Pohl
Common Names: :Golden trumpet, Harkakra, Campenilla, The cup of gold, Willow leaved Allamanda, Haladilu, Kolaambi, Jaharisontakka,.Kampanero (Tag.),Campanilla (Span., Tag.) Kampanero (Tag.) ,Kampanilya (Tag.) ,Kompanaria (Tag.), Yellow allamanda (Engl.) ,Yellow bell (Engl.) ,Golden trumpet (Engl.) Cherries jubilee allamanda (Engl.) Huang ying (Chin.)
Local names: Campanilla (Sp., Tag.); kampanero (Tag.); kompanaria (Tag.); golden trumpet (Engl.).
Habitat :Native from Brazil. Allemanda cathartica was introduced from tropical America and is now cultivated for ornamental purposes. It is occasionally semi-established in thickets near dwellings or settlements.
This plant is a smooth or somewhat hairy shrub 2 to 4 meters in height. The leaves grow in whorls of three or four, though the uppermost ones may be scattered, and are lanceolate or oblanceolate, 8 to 12 centimeters long, 2.5 to 4 centimeters wide, and pointed at both ends. The yellow flowers are shortly stalked. The calyx-teeth are green, somewhat spreading, lanceolate, and 1 to 1.5 centimeters long. The corolla is about 7 centimeters long; the slender part os the tube being 3 centimeters long; the tube is then inflated up to 2 centimeters in diameter; the lobes are ovate or oblong-ovate, spreading, rounded, and about 2 centimeters long.
Its large flowers are very fragrant. This South American plant is thought to blossom best in full sunshine, and well drained soil.
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Constituents: Phytochemical studies revealed the main constituents to be alkaloids, flavonoids, saponins and carbohydrates.
The whole plant is reported to be poisonous.Contains allamandin, a toxic iridoid lactone.As the name implies, the leaves, roots and flowers may be used in preparing a powerful cathartic. Milky sap is considered antibacterial, possibly anticancer.
Parts utilized: Leaves and bark.
*The plant draws its name from Allamand, who made the plant known a century and a half ago, who used a cathartic infusion of the leaves for colic.
*Infusion of leaves in moderate doses is an excellent cathartic; in considerable doses, it is purgative and a violent emetic.
*The bark and latex in small doses are considered cathartic; in large doses, poisonous.
*Decoction of the bark is a hydragogue; infusion of leaves is cathartic.
*Decoction of leaves in small doses used as antidote for poisoning.
*Extract of leaves used for colic and as laxative; in large doses causes diarrhea and vomiting.
*In Trinidad, used for treating malaria and jaundice.
*In Guiana, the latex is used as a purgative and employed for colics.
*In Surinam, the plant is used as a cathartic.
This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius.It is mainly used to treat malaria.
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.
• Purgative Effect: Findings suggest AC leaf extracts can elicit a purgative effect by increasing intestinal motility, in part, via muscarinic receptor activaton.
• Wound Healing: The study of aqueous extract showed significant wound healing activity in wound models studies with decrease epithelialisation time, high skin breaking strength, and increase in granulation tissue weight and hydroxyproliing content. The Allamanda leaf extract possesses better wound healing activity than the Laurus nobilis.
• Reversible Antifertility Effect: The study on the oral administration of aqueous leaf extract of AC showed reversible suppression of fertility in male mice – organ weight,, testosterone levels, sperm parameters among others – without detectable toxic effects.
• Antidermatophytic: Plumeride, an active principle isolated from the leaves of AC showed strong fungitoxicity against some dermatophytes causing dermatomycosis to both humans and animals.
• Purgative Effect : Study showed the aqueous extract of leaves of Ac could produce a purgative effect by increasing intestinal motility, partly through muscarinic receptor activation.
• Anti-Proliferative / Cytotoxic: Study evaluated the anti-proliferative effect of A. blanchetti and A. schottii on K562 leukemic cells. Results showed both plants exhibited cytostatic and cytotoxic activity, the most active were located in the roots.
• Antimicrobial: Study of leaf extract of A. cathartic showed antimicrobial activity – the chloroform extract showed significant activity against Shigella dysenteriae, moderate activity against B subtilis, P aeruginosa and a niger.
• Bioactive Iridoids / Cytotoxic: Study of ethanol extract of A cathartica and H fallax isolated a weakly cytotoxic isoplumericin and plumericin.