Hypocholesterolemic effect of an enteric-coated garlic supplement

Area of Science:

• Nutritional Biochemistry
• Cardiovascular Health
• Pharmacology

Background:

• Hypercholesterolemia is a major risk factor for cardiovascular disease.
• Dietary interventions, including supplements, are explored for managing lipid profiles.
• Garlic (Allium sativum) has been investigated for its potential health benefits, including cholesterol reduction.

Purpose of the Study:

• To assess the hypocholesterolemic impact of an enteric-coated garlic supplement.
• To evaluate the effect of a standardized allicin-releasing garlic preparation in hypercholesterolemic individuals.
• To determine if an enteric-coated formulation enhances garlic's efficacy for managing cholesterol levels.

Main Methods:

• A 12-week, double-blind, randomized, placebo-controlled trial was conducted.
• Participants included 46 hypercholesterolemic subjects unresponsive or non-compliant to drug therapy.
• Subjects received dietary counseling and either enteric-coated garlic powder tablets (9.6 mg allicin-releasing potential) or placebo.

Main Results:

• The garlic group showed significant reductions in total cholesterol (TC) and LDL-cholesterol (LDL-C).
• The placebo group exhibited non-significant increases in TC and LDL-C.
• HDL-cholesterol increased significantly in the placebo group, but not in the garlic group; triglyceride levels and LDL/HDL ratio showed no significant inter-group differences.

Conclusions:

• Enteric-coated garlic powder supplements demonstrate potential in managing mild to moderate hypercholesterolemia when combined with a low-fat diet.
• Enhanced allicin bioavailability, possibly via enteric coating, may be crucial for garlic's efficacy in lipoprotein metabolism.
• Garlic supplementation may exert cholesterol-lowering effects through direct biochemical action and/or by influencing food and nutrient intake.