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Medically reviewed by Last updated on Jun 13, 2022.

Excipient (pharmacologically inactive substance)

What is it?

Water is normally a clear, odorless, and tasteless liquid. Water (H2O) is a common ingredient used in pharmaceutical manufacturing, processing and in prescription and over-the-counter products. Additionally, many formulations, such as sterilized water, water for inhalation and sterile water for injection are products often used in the clinical or hospital setting.[1]

Top medications with this excipient


  1. Sterile water prescribing information. Water for Injection. Accessed March 31, 2012.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.