Common IV antibiotics: what to know

An IV line delivers medicine into the bloodstream under clinical supervision. It may be considered when someone is seriously unwell, cannot swallow or absorb tablets, needs a particular antibiotic, or requires observation while treatment begins. The choice depends on the suspected bacteria, infection site, allergy history, kidney function, and local prescribing guidance. Examples of infections that may sometimes need antibiotic treatment include Cellulitis, Brucellosis, and severe bacterial illness; Acute Bronchitis is often viral, so antibiotics are not automatically appropriate.

A clinician checks your symptoms, allergies, medicines, and relevant test results before selecting treatment. The IV site is examined for pain, redness, swelling, or leaking. Tell the team immediately if you develop itching, a rash, wheezing, facial swelling, severe diarrhoea, or feeling faint. Take the treatment for the prescribed duration and do not share antibiotics or save unused doses. Ask whether you can switch to tablets when your condition and absorption allow it.

Get emergency help for trouble breathing, swelling of the lips or throat, collapse, or rapidly spreading hives after an antibiotic. Contact the treating team promptly for severe or persistent diarrhoea, fever returning, worsening pain, or redness tracking away from the IV site. If symptoms fail to improve, the clinician may reassess the diagnosis, culture results, medicine choice, and need for drainage or another treatment.

Which infection is being treated, why is IV treatment needed, and how will you check that it is working? What should I report at the IV site or after leaving the clinic?