Carnitine is getting more popular it seems. I think I have used 15 bottles of Inno's and now Pareto has their own injectable L-Carnitine available. Afaik its Inno, Pareto, Amino Asylum, 99sarms all carry Injectable L-Carnitine and I would purchase them in that order if I had the choice.
@Jestopherson I believe is also a big fan of it as well