If you have gallstones, you can have a slimming injection. The main component of slimming needle is botulinum toxin. By blocking the connection between nerve and muscle, the muscle gradually shrinks, thus achieving the effect of slimming. Cholelithiasis refers to the occurrence of stones in gallbladder or bile duct, which is not directly related to the mechanism of action of slimming needle. Under normal circumstances, people with gallstones can also take slimming needles.