ALCAR may help with weight loss. The best benefit that people see is when they use 2-4 different analogs of Carnitine in addition to ALCAR. For example a combo of Acetyl-L-Carnitine, Carnitine-L-Tartrate, L-Carnitine, GPLC or Propionyl-L-Carnitine. This will emphasize the impact on fat loss, increase energy levels (anti-fatigue) by re-energizing your mitochondria. There are two great products for this that I trust: 1) Beverly International QUADRACARN (4 Carnitine Analogs) or 2) Neuro Research Neuro Awaken XT (3 Carnitine Analogs and other natural neurotransmitter precursors).
Some benefits have also been witnessed by adding other natural uppers (which have shown to reduce food cravings and increase mental and physical energy) to the mix including: GABA, DMAE, L-Dopa and L-Tyrosine. Personally, I take GABA and Mucuna Pruriens (15% to 40% L-Dopa) 30 minutes before bed on an empty stomach. Studies suggest that both can increase your HGH naturally at night promoting weight loss, they also help me sleep deeper.
Good Luck