What is the definition of pastes in pharmaceuticals?

In the field of pharmaceuticals, pastes are defined as a stiff ointment that retains its solid form at body temperature. This characteristic distinguishes pastes from other topical formulations such as creams or lotions. Pastes contain a high concentration of insoluble solid particles suspended in a small amount of liquid, providing a thicker texture.

The formulation of pastes allows them to adhere well to the skin, making them ideal for protecting and treating skin conditions, especially in areas that may be more susceptible to irritation or injury. Their consistency also means they do not easily run or drip, which can be beneficial in ensuring that the medication remains in place where it is needed.

Understanding this definition is crucial for pharmacy technicians as they prepare and dispense medications. It helps in distinguishing between various formulations and knowing their appropriate uses, applications, and patient instructions.