My wife has had parkinson's for 5 years now and is taking one 25/100 Carbidopa Levodopa every 3 to 3 1/2 hours to take the edge off bad tremors and rigidity. Her neck is bent very far forward now due to a change in her posture because of PD and has a great deal of upper back pain due to that. If she is able to sleep 5 to 6 hours in a row at night she wakes up unable to move and I have to get up and help her to the bathroom. Sometimes not in time. I'm curious what other PD patients take for their last dose of the night to help with the low dopamine levels in the morning. She's tried ER tablets with mixed results.