The addition of substances to foods etc. in order to increase the bulk and reduce the cost, with intent to defraud the purchaser.
Drug tampering in which inexpensive, inferior, or hazardous substances are mixed with a particular drug.
The act of making something less pure by adding another substance.
The addition or substitution of an impure, weaker, cheaper, or possibly toxic substance in a formulation or product.
The dishonest practice of adding a low-cost filler to food or medicine.