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Antibiotics

Also called antibacterials

Antibiotics kill bacteria or stop them multiplying, and they are grouped by how they do it — penicillins and cephalosporins break down the bacterial cell wall, macrolides block protein synthesis, glycopeptides such as vancomycin are held in reserve for resistant organisms like MRSA. Choosing the right one depends on the likely bacterium, the site of infection and local resistance patterns, which is why they are not interchangeable.

Reviewed by Sreepriya Prasannan
MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany HSE Spark Ignite 2026 — Top 14 finalist
Compiled from official FDA data · Last verified · Editorial standards
What this class is used for
Bacterial infections — chest, urinary, skin, ear, throat and hospital-acquired

4 Antibiotics in this directory

Amoxil
Amoxicillin
A first-line antibiotic for many common bacterial infections.
Zithromax
Azithromycin
A short-course antibiotic for respiratory and other infections.
Rocephin
Ceftriaxone
An injectable broad-spectrum antibiotic used to treat severe bacterial infections.
Vancocin
Vancomycin
An oral or intravenous antibiotic used to treat serious bacterial infections, including MRSA.

Browse other drug classes

ARBs Anti-amyloid Antibodies Antibody-drug Conjugates Anticoagulants Anticonvulsants Antihistamines Antiplatelets Asthma & COPD Inhalers Atypical Antipsychotics BTK Inhibitors Beta Blockers CD20 Antibodies CDK4/6 Inhibitors CGRP Inhibitors COVID-19 Antivirals Checkpoint Inhibitors Cholinesterase Inhibitors Complement Inhibitors DPP-4 Inhibitors EGFR Inhibitors Enzyme Replacement Therapy GLP-1 Agonists Gene & Cell Therapies HIV Antiretrovirals Hepatitis C Antivirals IL-1 Inhibitors IL-17 Inhibitors IL-23 Inhibitors IL-5 Inhibitors IL-6 Inhibitors Insulins JAK Inhibitors PARP Inhibitors PCSK9 Inhibitors Proton Pump Inhibitors SGLT2 Inhibitors SSRIs & SNRIs Statins TNF Inhibitors TTR Silencers Tyrosine Kinase Inhibitors

How this page is built

The facts on this page are pulled directly from official U.S. FDA datasets — they are not written from memory. Each field below names the dataset it came from, so you can check it yourself.

Plain-English summaries and drug-class explainers are written and reviewed by Sreepriya Prasannan (MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany). Data is retrieved automatically from the sources above and cross-checked with AI-assisted verification (Anthropic's Claude) — brand and generic names are matched against the exact FDA product record so that a combination product or a different formulation cannot be mistaken for the drug on this page. An editor reviews the result before publication. We describe this in full in our editorial standards and corrections policy. The FDA data on this page was last retrieved on 11 Oct 2026. How every register is built: methodology · fixes we have made: corrections log.

Please verify before you rely on this. This page is general information for life-science and pharmaceutical professionals. It is not medical advice, and it has not been reviewed by a clinician — our editorial team holds life-science qualifications, not clinical ones. It is not exhaustive and may not reflect the most recent label change. Always check the official prescribing information (US Prescribing Information or EU SmPC) and speak to your doctor or pharmacist before acting on anything here. Drugs in the same class are not automatically interchangeable, and approvals, brand names and indications differ between the US, the EU/Ireland (EMA/HPRA) and other regions. Spotted an error? Tell us — we correct promptly and log it.