Hello,
Yes, hypersalivation which is production of excessive saliva from mouth is a kind of side effect of Tab. Trinicalm.
This side effect is not dangerous but it becomes distressing for the patient to spit frequently and also it gets noticed by friends and other members of society.
Tab. Nitrosun is a medicine for sleep, so you can make it half if he is sleeping more and you can skip it when he doesn't require it.
Next Steps
Please consult a psychiatrist for adjusting the dose of Trinicalm medicine.