thank you for your query,Methadone
being a synthetic opioid, has more or less similar side effect profile as other opioids.
is one of them.
So, when you are taking Methadone, it is important to include fiber rich foods in the diet & maintain adequate hydration to avoid constipation.Lactulose
, as prescribed by your doctor is a laxative, which acts by absorbing water from Gastrointestinal tract and softening the stools.
The symptoms like gas formation & pain can be taken care of by medications like Pantoprazole
Kindly consult your Physician & get a prescription for the same.
You can contact me for any follow up questions