Hello,
A detox phase for derivatives of opium molecules, especially the synthetic ones, can vary for a period lasting from 3 months to up to a year, depending on the course of previous intake and severity of the problem.
I can understand the distress caused by this withdrawal phase in the form of constant body pains and irritability due to its chronic nature.
I would want to allocate the cause for these complaints to the apparently longer than usual (protracted) withdrawal of
methadone. In that case, i will suggest a patient wait for the phase to get over, along with some short term symptomatic medication like non-
opioid pain killers (Diclofenac/
Aspirin, etc) and/or muscle relaxants (
Baclofen) from a local clinic.
However, it will be advisable to rule out any other problem associated with this, by checking for any other body symptoms, changes in appetite, pervasive low mood, easy fatigue-ability, losing interest in any work or conversations or feelings of helplessness/ worthlessness or hopelessness for future.
If such is the case, then your friend might be suffering from a co-morbid
Depression with somatic complaints, which is a common to occur in
opiate withdrawals. This will require proper assessment and medication by a specialist (Addiction
Psychiatrist) who can see her in person.
I hope this resolves your concern for now. Happy to help in case of further questions. Wishing your friend a sooner recovery!