It may depend on how bad they are if they are severe then you may have to get to the drs.
Some alternatives are
taking magnesium and vitamin D3
Lemon & Olive oil drink can be taken daily.
To make this you need one organic lemon one table spoon of Extra virgin olive oil, a glass & a half of clean spring water or filtered/spring water.
Wash the Lemon, cut out any dark bits, then roughly chop the whole thing including the rind & put in a blender.
Add the table spoon of Virgin Olive oil & the glass & a half of water - blend this for 60 seconds - strain & serve.
If you wish to gain weight split the drink into three portions & drink with each meal throughout the day.
This drink manages to restore the Ph of your saliva which in turn helps you to absorb the nutrients from the food you eat.
If drunk all in one go first thing in the morning (an hour before eating) it will flush & detox the Liver & Gallbladder.
PH balance your system
Lesson 18 - Restoring pH Balance in the Body Natural Cures Remedies | Natural Cures for Gallstones
Check with your dr to make sure that it is safe to do these with any medications you may be on.