1 interaction related to lipid-lowering
Berberine and red yeast rice are frequently combined in cholesterol-lowering nutraceuticals and act through complementary routes: berberine upregulates hepatic LDL receptors and reduces lipogenesis, while red yeast rice's monacolin K (chemically identical to lovastatin) inhibits HMG-CoA reductase. Together they produce additive LDL reduction. Secondarily, berberine mildly inhibits CYP3A4, the enzyme that clears lovastatin/monacolin K, so it can modestly raise monacolin K exposure and add to statin-type muscle risk. In practice the pairing is generally well tolerated because red yeast rice delivers only a low, variable, unregulated monacolin dose, so the additive muscle/CYP3A4 concern sits at the low end and the intended lipid-lowering synergy dominates.
