Thanks for the link. The MD in question suggests checking with the person's physician for possible interactions with other drugs, but in my case that is not an option because my cardiologist gets mad at the sole mention of supplements; he only believes in beta blockers and the like. Oh, well. Thanks again fpr replying to my post.
I assume you did a search on L-carnitine, so this may not offer anything new.
Here's one with a response from an MD.
http://www.medhelp.org/posts/show/250199
I got several other post on that search, what I looked at had few or no replies.
Good Luck