LINK: A visualization based on the effectiveness of different alternative medicine supplements, spices, oils, and herbs
Each item represented there is based on PubMed and Cochrane reports on large human blind placebo-controlled studies only.
If you click on the bubbles, you'll be taken to abstracts which support the use of those particular alternative medicines for specific conditions.
Note these directions found at the bottom of the page before you go there:
"The higher a bubble, the greater the evidence for its effectiveness. But the supplements are only effective for the conditions listed inside the bubble. (Mouseover the bubble to see what I mean.)
You might also see multiple bubbles for certain supplements. These is because some supplements affect a range of conditions, but the evidence quality varies from condition to condition. For example, there’s strong evidence that Green Tea is good for cholesterol levels. But evidence for its anti-cancer effects is conflicting. In these cases, we give a supplement another bubble."The chart is Flash based, but there is a link to a non-Flash version there if you prefer that (iPhone users take heed.)