Shop L Carnitine Supplement for Fat Loss & Energy The Science of Good Health Injectable vs Oral L Carnitine: Which Works Better? AWP Acetyl L Carnitine VS L Carnitine: Which is Better? Effectiveness varies: L carnitine may help with fat metabolism, but it's not a magic weight loss pilldiet and exercise still matter most. Forms matter: Regular L carnitine general use Acetyl L carnitine brain & energy Essential L Carnitine Optimal Health Systems