Hi
Thanks for posting your query on HCM.
Glad to know you have almost come out of pain management program.
Since you have been free from
Methadone for the past 20 days, it will take few more days to get completely free from its withdrawal effects.
The long-term use of methadone (4 yrs in your case) causes adaptations within the body that lessen the effect of the drug over time. So, when you want to gradually reduce the dose over several weeks, it will take time by the body to get adjusted with out the drug which is manifested in the form of withdrawal effects.
The most common side effects that are seen while weaning off Methadone include:
Sneezing, running nose, increase tear formation,
vomiting, chills,
rigors low grade fever, increased heart beat, sweating, increased perception of odors (detergents used by the laundry in your clothes smelling like acetaldehyde!).
So, in view of the above explanations, nothing to worry about the these effects. They will gradually disappear after a few weeks.
Hope these suggestions could be useful to you in understanding the withdrawal phenomenon.
Best of your health.