I Am Taking Treatment For H-pyroli. The Doctor Advised Me

I am taking treatment for H-pyroli. The doctor advised me to take Nexpro HP for 14 days from 26.1.17. Along with it I am also taking 1 tablet of PROVIDAC. Both twice a day. Upto 4 four days I was so comfortable and there was no reaction. From 30th onwards during night time I get saliva with bitter taste and unable to sleep properly. The duration of problem for 1-2 hours during mid night. What is the remedy to over come this problem.