NHS Choices have lots of information about common conditions, and how you can make small changes to your lifestyle to stay fit and healthy. NHS Choices Health A-Z They also have an online symptom checker in case you are worried about a specific condition. It is your ultimate guide to reliable health information on common topics from A to Z. You can find high-quality information on a variety of health conditions and see the ideal, evidence-based patient journey for common conditions. All about your medicines For comprehensive information about medicines, including known possible side effects, interactions and dosages please visit the electronic medicines compendium. Use the A-Z listings above to look up medicines by name or by the conditions they treat. The information covers drugs you might be prescribed and over-the-counter (OTC) medicines you can buy without a prescription.