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. 2013 May;27(5):647-54.
doi: 10.1002/ptr.4760. Epub 2012 Jun 27.

A safety assessment of the antimalarial herb Artemisia annua during pregnancy in Wistar rats

Amos O Abolaji  1 , Mbeh U Eteng, Patrick E Ebong, Ebiamadon Andi Brisibe, Ahsana Dar, Nurul Kabir, M Iqbal Choudhary
Affiliations

A safety assessment of the antimalarial herb Artemisia annua during pregnancy in Wistar rats

Amos O Abolaji et al. Phytother Res. 2013 May.

Abstract

Artemisia annua is a Chinese antimalarial herb that has been used for more than 2000 years. The maternal and foetal safety of the ethanolic leaf extract of therapeutically active Artemisia annua (EAA), with previously determined artemisinin yield of 1.098% was evaluated in Wistar rats. Twenty pregnant rats, divided into four study groups of saline treated (control), and test groups administered orally with 100, 200 and 300 mg/kg body weights of EAA, respectively, from gestation days (GD) 8 to 19. Following overnight fast, animals were sacrificed on GD 20, and maternal blood was collected to evaluate biochemical and haematological markers. Foetuses were carefully removed, weighed, and observed for any possible malformation. Biochemical and haematological studies revealed that EAA did not result in maternal hepatotoxicity, haematotoxicity, and hyperlipidemia. While litter size significantly decreased (p < 0.05) at 100 mg/kg EAA, maternal estrogen levels decreased in all the EAA-treated groups. Non-viable (21%) and malformed (31%) foetuses were observed at the 300 mg/kg dose of EAA, which implies that although consumption of the leaf extract may not predispose users to hepatotoxicity, haematotoxicity, and hyperlipidemia, it should be taken with caution during pregnancy due to possible risk of embryotoxicity at concentrations higher than the therapeutic dose.

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