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Sodium Hydroxide

Medically reviewed by Last updated on May 8, 2023.

Excipient (pharmacologically inactive substance)

What is it?

Sodium hydroxide (NaOH) is also known as white caustic, caustic soda or lye. It is a very strong chemical and is found in many industrial solvents and cleaners, including flooring stripping products, brick cleaners, cements, and many others. Industrially, sodium hydroxide may be used in processes to make products including plastics, soaps rayon and textiles. It is also used as a pH buffer.

List of medications using Sodium Hydroxide


  1. EWG's Skin Deep Cosmetic Database. Accessed March 3, 2015 at

Further information

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