Compounding Explained

Sterile vs Non-Sterile Compounding: What Is the Difference?

Compounding is broadly divided into sterile and non-sterile categories. Understanding the distinction can help patients and prescribers communicate clearly about the type of preparation required.

ACP Pharmacy
Published 1 February 2024
Reviewed by ACP Pharmacy Compounding Team
Last reviewed: 1 February 2024

This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before making decisions about your medications or health.

Compounding pharmacy preparations are broadly categorized as sterile or non-sterile. The distinction is important because it determines the type of facility, equipment, and processes required.

What is non-sterile compounding?

Non-sterile compounding covers a wide range of preparations that are not required to be free from viable microorganisms. Common examples include:

  • Capsules
  • Topical creams, gels, and ointments
  • Oral liquids and suspensions
  • Troches and lozenges

Non-sterile preparations are subject to pharmacy quality standards and must still be prepared carefully and consistently. However, the facility and process requirements are different from sterile compounding.

What is sterile compounding?

Sterile compounding produces preparations that are free from viable microorganisms and other contaminants. This is required for preparations that are introduced into the body in ways that bypass normal protective barriers, such as:

  • Injectable preparations
  • Eye drops and ophthalmic preparations
  • Certain inhaled preparations

Sterile compounding requires specialized cleanroom facilities, trained personnel, and rigorous quality controls. It is subject to additional regulatory oversight and quality standards. [VERIFY SPECIFIC STANDARDS WITH CLIENT]

Why does the distinction matter?

Understanding whether a required preparation is sterile or non-sterile helps prescribers and patients understand the type of pharmacy that can provide it, the preparation timeline, and the relevant quality considerations.

Not all compounding pharmacies are equipped to provide sterile preparations. If you or your prescriber require a sterile compounded preparation, confirm with the pharmacy that it has the required facilities and processes in place.

At ACP Pharmacy

Contact ACP Pharmacy to discuss whether your prescription requires sterile or non-sterile preparation, and to confirm our current capabilities. [VERIFY STERILE COMPOUNDING SERVICE AVAILABILITY WITH CLIENT]

Last reviewed: 1 February 2024 Reviewed by: ACP Pharmacy Compounding Team Author: ACP Pharmacy

This content is reviewed periodically. If you notice any outdated information, please contact us.

Patient Education

Questions to Ask Your Compounding Pharmacy

Before using a compounding pharmacy, it is reasonable to ask about their process, standards, and how they handle your prescription. Here are helpful questions to guide the conversation.

Read article
Medication Forms

Customized Dosage Forms Explained

Compounding allows medications to be prepared in alternative dosage forms. Here is a plain-language overview of the most common forms and when each might be considered.

Read article

Questions about this topic?

Contact our team or speak with your prescriber for guidance specific to your situation.