Can Tryptomer Cause Dry Cough?

MY MOTHER IS BEING TREATED WITH TRYPTOMER 10 MG FROM LAST ONE MONTH BY DIABETOLOGIST,SHE IS SUFFERING FROM DIABETIS AND BURNING SENSATION IN LEGS(NEURALGIA).DR HAS RX GABA NEURON AND TRYPTOMER 25 MG,RAMISTAR 5 MG. BUT THEN SINCE FROM 5-6 DAYS SHE IS SUFFERING FROM IRRITATING DRY COUGH .DR REDUCED RAMISTAR AND TRYPTOMER DOSE TO 10 MG BUT EVEN THOUGH SHE IS SUFFERING FROM DRY COUGH AND DRYNESS OF MOUTH.IS THIS SIDE EFFECT OF TRYPTOMER