Brief Answer:
just 5% chances

Detailed Answer:
Hello sir
I have gone through your question and I can understand your concern

Gall stone could be related to many reasons like habit of fatty food consumption or inflammation of liver and gall bladder.
there are very less chances of gall stone or gall bladder symptoms with cosamine, just 5% as per medical studies and literature.

if you have any previous medical records or ultrasound, please send it me I will be able to guide you better

Cosamine can produce gas and stomach pain or GERD symptoms which can be relieved very easily with anti acidity medicine

meanwhile follow these guidelines
avoid fatty fried and junk food or carbonated drinks
have fresh fruits and steamed vegetables

Hope this helps you
please do not hesitate to ask for more clarification
Best wishes

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