I think I'm absorbing it better, and it may be playing a small role in my increase in energy. In 2002 when I first discovered l-carnitine, it gave me a magical boost in energy and no PEM for 7 - 10 days. And then suddenly it just stopped. I've taken it off and on ever since, more on than off, but never had it work that well again.
I know there's no mistaking that my achiness first disappeared and energy noticeably increased two days ago when I started the lemon juice, so I'm positive this is a cause of my feeling better. But in the interests of full disclosure, I thought I'd better mention the liquid l-carnitine which might be playing a role too!
Here's an example of my increase in energy - for the last several weeks the idea of a shower was too much for me and have gotten by with short baths, except when my hair just absolutely had to be washed, after putting it off as long as possible. This morning my hair needed washing again - shower? No problem! I didn't even have to think twice about it! Wow - no wonder normal non-ME/CFS people take showers! I'd almost forgotten that they can be nice!