Which type of compounded sterile preparation consists of one or two ingredients?

The appropriate classification for compounded sterile preparations that consist of one or two ingredients is simple compounded sterile preparations. This type of preparation is defined by its straightforward nature, requiring minimal components, which allows for a more streamlined process in pharmacy practice.

Simple compounded sterile preparations are often utilized in clinical settings where a specific and uncomplicated formulation is needed, such as diluting an injectable medication into a sterile preparation. Because they have fewer ingredients, the risk of complications like contamination or formulation errors is typically lower compared to more complex preparations.

In contrast, complex compounded sterile preparations involve multiple components, procedures, or require specialized techniques and equipment, making them inherently more complicated. Single-use sterile preparations are designed for immediate use and do not precisely fit the description provided in the question. Batch compounded sterile preparations involve creating larger quantities of a preparation, which also does not align with the one or two ingredient criteria. Therefore, the answer distinguishes itself clearly by highlighting the simplicity associated with fewer ingredients in the preparation.