The nature of medical information is that it is constantly updated because of ongoing research and practical experience. If you are taking prescription or over-the-counter drugs, or have some health issues you can turn to the following online free resources:

1. General Information About Medications

• MedlinePlus provides information about Drugs, Supplements, and Herbs from from AHFS®.
• RX Llist.com offers free online detailed pharmaceutical information on brand and generic medications. The articles on this site are written by doctors and pharmacists.
• Drugs.com – good source for prescription drug information for both professionals and consumers.
• MayoClinic.com Drugs and Supplements information provided by physicians, scientists and researchers. Web site offers health information, self-improvement and disease management tools to empower people to manage their health.
• Drugs & Treatments on Revolution offers ratings and reviews from their members.
• Daily Med - quality medical information about marketed drugs, including FDA approved labels (package inserts).
• CrazyMeds.us - is an interesting and unconventional mental health resource, created and updated by a person who’s had some extensive experience with different psychiatric medications. The website is mainly for patients and features informal commentaries on personal experiences with medications.
• RXmed.com - is a suitable resource for consumers ans physicians. Documented, authoritative and detailed information on over 3000 prescription pharmaceuticals. While this information is mainly presented for doctors, patients will find it valuable as well. These listings cover general pharmacology, indications, warnings, dosage and adverse effects information for each pharmaceutical monograph.
• Health Canada high-quality scientific information for Canadians to help maintain and improve their health.
• Erowid.org is a member-supported organization providing access to reliable, non-judgmental information about psychoactive plants and chemicals and related issues.

2. Useful Online Tools

• Drug Spelling Checker - unique tool from OriginalDrugs.com
• Side Effects Index - PDR based information about medications and their side effects.
• Drug Interactions Checker shows all possible interactions between chosen drugs and food.
• Pill Identification Wizard on Drugs.com may help you to avoid to avoid confusion and errors.
• Pill Identification Tool on RXList.com to help identify drugs and medications.
• Multiple Symptom Checker – allows research of the causes of one or many symptoms in an extensive knowledge base, including common and rare causes.
• BMI calculator to calculate your Body mass index.
• Nutrients Identifier allows you to see what you actually eat, find how much calories, vitamins, minerals, fats, proteins, carbohydrates, and sugars are in your diet.

3. Drug Buyers Forums: Where & How to Buy Online

• Drug Buyers.com - many useful information about buying medications online, including US, Canadian, and international pharmacies.

4. Drugs & Medications Forums, Message boards

• Prescription Drug Forum on Drugs.com - online discussion about drug therapy, side effects and interactions.
• Medications.com - a community that allows people interested in commonly prescribed drugs to interact so that they can discuss the implications – both positive and negative of using these important tools in modern medicine.
• MedHelp.org - excellent place to research information on medications and health issues, and to share your knowledge with others. The MedHelp site connects people with the leading medical experts and others who have similar experiences.
• Pharmer.org – discussion of prescription and OTC meds, chronic pain and pain management, medical news.

5. Online Pharmacy Ratings & Reviews

• PharmacyChecker.com Ratings – online pharmacy ratings and profiles to help you find safe and affordable prescription drugs from Canada, Unites States, and internationally, customer feedback regarding online pharmacies.
• PharmacyReviewer.com Online Pharmacy Reviews – free worldwide medicine price comparison and online pharmacy reviews site.
• eDrugSearch.com Pharmacy Directory – international, domestic and canadian pharmacies reviews.

6. Drug Ratings & Reviews

• Ask a Patient: Medicine Ratings and Health Care Opinions
• Drugs & Medications A-Z – User Reviews and Drug Ratings on WebMD.com
• Reviews of drugs, therapies and remedies on DailyStrength
• Drug Ratings & Reviews on eDrugSearch.com help to find objective information about prescription medications.

7. Health Websites

• WebMD.com - popular health website offers credible and in-depth medical news, features, reference material, and online community programs.
• MedicineNet.com - online, healthcare media publishing company. Trusted source for online health and medical information.
• FamilyDoctor.org - sponsored by the American Academy of Family Physicians, this site features comprehensive consumer health information in both English and Spanish.
• eMedicine - comprises the largest and most current Clinical Knowledge Base available to physicians and other healthcare professionals, continuously updated with the data from medical literature.
• Merck Manuals - free online version of The Merck Manual Home Health Handbook, great source for medical information about disorders and treatment options.
• eMedicine Health - this site provides health, medical, lifestyle and wellness information for all ages. In addition, there is information to prepare consumers for medical emergencies, injuries, minor medical conditions and basic first aid.
• Aetna Intelihealth - a subsidiary of Aetna, partners with Harvard Medical School and Columbia University College of Dental Medicine to provide health information on this website. The site is content rich on disease and treatment information, and includes nice additional features such as its Interactive Health Tools, Ask the Expert, Personalized Health E-mail service, and Discussion Boards.
• HealthCentral - provides a collection of Websites providing trusted medical information from doctors, researchers and expert patients, as well as news, information, video and other multi-media content on health related subjects.
• WrongDiagnosis.com - provides a free health-information service to help people understand their health better, offering crucial and factual health information that is otherwise difficult to find.