Should an antibiotic be taken before or after food?
This depends on the antibiotic, formulation and pack instructions; there is no single rule for all antibiotics. Amoxicillin can be taken with or without food, while other products have different requirements. Ask about your exact product and spacing from antacids or supplements.
Details
The ingredient name may not be enough
Bring the pack or a clear photograph to the pharmacist and mention other medicines and supplements. Certain minerals or antacids interfere with some antibiotics; one spacing interval does not fit every combination.
Doxycycline is an example
Swallow tablets or capsules with a glass of water while sitting or standing, and avoid lying down for at least thirty minutes to reduce oesophageal irritation. Follow the product leaflet about food because instructions vary with dose and use.
If you miss a dose or feel sick
Follow the missed-dose instructions rather than doubling up. Contact a pharmacist or clinician if vomiting or pain prevents treatment instead of independently changing the schedule or stopping. Severe or bloody diarrhoea requires assessment.
Related reading: Is diarrhoea during antibiotics expected, and when is it concerning?.