Injection compatibility: Acidic and alkaline

Last updated: Sunday, July 12, 2015


The acidity or alkalinity of injection solutions are a particularly important factor in determining their compatibility. The table below gives examples of pH values for common injections:



Acidic: pH<6

Neutral: pH 6-8
Alkaline: pH>8
Morphine
Insulin
Phenytoin
Dopamine and Dobutamine
Ranitidine
Sodium bicarbonate
Vecuronium
Benzylpenicillin
Frusemide
Cyclizine
Cefotaxime
Aminophylline
Hyoscine hydrobromide
Hydrocortisone
Co-trimoxazole
Midazolam
Albumin
Ganciclovir
Amiodarone
Normal saline
Venofer
Gentamicin
Heparin
Dantrolene