Which soil fungus produces the cholesterol-lowering drug lovastatin?

Aspergillus terreus produces the cholesterol-lowering drug lovastatin. This soil-dwelling mold makes lovastatin as a secondary metabolite, meaning the compound is not required for basic growth but can provide an ecological advantage under particular conditions.

Lovastatin was first isolated from A. terreus and was originally known as mevinolin. It inhibits HMG-CoA reductase, a key enzyme in the liver’s cholesterol-production pathway. By reducing cholesterol synthesis, it helps lower blood levels of low-density lipoprotein (LDL) cholesterol.

The drug is manufactured through controlled fungal fermentation, although commercial production uses carefully selected strains and optimized nutrients rather than ordinary soil samples. Lovastatin is also chemically related to simvastatin, another statin medication that can be produced from it.

A common mix-up is confusing A. terreus with Monascus species. Monascus fungi can produce related statins, especially monacolin K, but A. terreus is the classic canonical source associated with lovastatin in this question.