Cefazolin + Sodium picosulfate / magnesium oxide / anhydrous citric acid

MediHelp rates the interaction as moderate. Cefazolin and Sodium picosulfate / magnesium oxide / anhydrous citric acid can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Sodium picosulfate is a prodrug that must be converted to its active laxative form by colonic bacteria. Antibiotics that suppress colonic flora may reduce this activation and lead to poorer bowel cleansing before colonoscopy. Cefazolin is given parenterally, so the effect is likely smaller than with oral antibiotics, but labeling advises caution.

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Assess bowel preparation adequacy before the procedure and consider extra preparation or rescheduling if cleansing is poor. Where possible, avoid starting antibiotics around the time of the preparation.

MediHelp also lists interactions of Cefazolin with, for example, Amikacin, Bcg vaccine live, Cholera vaccine. The full list is on the Cefazolin page.