have degenerative bone disease in back neck shoulder. Are these meds compatible? only have a few remaining lortab then will take the Tylex CD 2x daily. I am retired from USA and now live in Mexico where Lortab is not available . lortab relieves pain better than the Tylex CD which is avail. in Mexico. Last week I was in hospital for severe back pain for one week I am now at home on the above mentioned meds. Is it safe combination???