Can I Give My Infant An Alternative To Bonnisan For Digestion, As It Has Increased Her Appetite And Disrupted Sleep?

I have a 2 month old baby. She is completely on formula milk as my milk production is very less. She is frequently having episodes of spitting up curdled milk along with gas. Her pediatrician prescribed bonnisan drops. Now the medicine is very helpful in digestion and her symptoms are significantly reduced but her appetite has increased way too much and also she is not sleeping. Is there any other medicine which can be given other than bonnisan.