Ammonium Hydroxide

Ammonium Hydroxide in Medications

Ammonium Hydroxide: A Common Pharmaceutical Ingredient
Ammonium hydroxide is used in medications as a pH adjuster and solubilizing agent. It does not treat medical conditions, but it plays an important role in formulation stability and drug solubility during manufacturing.

What Is Ammonium Hydroxide?

Ammonium hydroxide is an aqueous solution of ammonia. In pharmaceuticals, it is used in controlled amounts for processing and is often present only in trace levels in the final product. It may appear under several ingredient names on medication labels.

Why Is Ammonium Hydroxide Used in Medications?

Ammonium hydroxide is used because it:

  • Adjusts and controls pH in formulations
  • Enhances solubility of certain active ingredients
  • Acts as a neutralizing or buffering agent
  • Supports processing in liquids or topicals

These properties make it useful in both prescription and over-the-counter products.

Ingredient Names to Look For

Ammonium hydroxide may be listed as:

  • Ammonium hydroxide
  • Ammonia solution
  • Aqua ammonia

Where Does Ammonium Hydroxide Appear?

It is commonly found in:

  • Liquid formulations
  • Topical preparations
  • Injectables (during manufacturing)
  • Various dosage forms as a processing aid

How to Check a Medication’s Ingredient List

Ingredient lists can vary by manufacturer and dosage form.
Use PillParser to scan a medication and view its ingredient list.





Adding the manufacturer filters generics (fillers/dyes often differ).

To keep PillParser free, anonymous scans are limited.


Understanding ingredient differences is especially important for individuals with known sensitivities. RxAllergyScan.com allows users to compare medication ingredients against their personal allergen profile.

Educational Note

This page provides educational information only and does not make medical claims.