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Fotouhi A, Asghari F, Mirzazadeh A, Alaedini F, Yazdani K, Arya A, et al . Comparison of therapeutic and short term side effects of anethum with nicotinic acid, cholestyramine, the combination of the two, and placebo for isolated hypercholesterolemia a double blind, randomized clinical trial. J. Med. Plants 2002; 1 (3) :51-59
URL: http://jmp.ir/article-1-803-en.html

Anethum is a herbal drug production and prescription of which, as a lipid lowering drug, has been approved in Iran. Its widespread use and lack of studies done on it emphasizes on the necessity of a controlled clinical trial. Two hundred and one hypercholesterolemic patients (total cholesterol >240 mg/d) diagnosed on basis of two consecutive lab tests, separated by at least two weeks, comprised the study population. Patients were randomized into the following therapy groups after 2 weeks of diet therapy: 1) Cholestyramine 12 g per day, 2) Nicotinic acid 3 g per day, 3) Cholestyramine 12g per day plus Nicotinic acid 3 g per day, 4) Anethum 6 tablets per day, 5) Placebo. One hundred and fourteen patients completed the 2 months follow up. A third lab test at the end of the course revealed a 2.0% reduction of cholesterol level in the anethum group. Triglyceride had %3.1 rise in anethum group (not significant). Low density lipoprotein cholesterol (LDL-C) was increased by 6.1% in the anethum group (not significant). The most common side effects of anethum were non specific complaints (i.e. malaise and fatigue). One patient discontinued therapy because of abdominal pain. Anethum caused a 2.2 mg/dl rise in blood urea nitrogen (P=0.016) and 0.12 mg/dl rise in creatinine (P=0.019). Based on the results, we conclude that anethum is not significantly different from placebo in its therapeutic effects, moreover there are clinical evidence on its untoward effects by increasing LDL-C. Although this study hasn’t proved untoward effects of anethum statistically but showes lack of any beneficial effects.