Before you buy Acetyl-L-Carnitine (ALCAR), it is essential to understand that while it shares a name with standard L-carnitine, its primary application is rather than just physical fat burning. ALCAR has an added acetyl group that allows it to cross the blood-brain barrier effectively, making it a targeted choice for memory, focus, and mood. 1. Key Considerations When Buying Momentous Acetyl L-Carnitine