Medline Plus

What is it? Drugs, supplements, and herbal information database.

Features:

• Learn about your prescription drugs and over-the-counter medicines. Includes side effects, dosage, special precautions, and more.
• Browse dietary supplements and herbal remedies to learn about their effectiveness, usual dosage, and drug interactions.

Authority? Medline Plus - A service of the U.S. National Library of Medicine, National Institutes of Health

Flickr Creative Commons Photo: xxrobot

WebMD's Pill Identifier

What is it? Pill identifier.

Features:

• Identify pills by shape, color, or imprint.
• Check uses, side effects, precautions, interactions, and overdose first aid.

Authority? WebMD is written by a team of individuals with MDs.

Protein Powder Reviews

What is it? Analysis of 697 protein powders

Features:

• Detailed comparisons, expert reviews.
• Browse dietary supplements and herbal remedies to learn about their effectiveness, usual dosage, and drug interactions. 

Authority? 32 nutrition experts