Bugger! Lost the posting I wrote, here goes again.
I was stopped relatively abrubtly from Sinemet, going from 1200mg per day over a 3 week period to none, due to an excellent outcome with DBS.
I'm aware of possible problems like Reverett mentioned eg neuroleptic malignant syndrome but I was fine.
I previously was stopped abruptly from taking an agonist and COMT inhibitor also with no ill effects.
Despite this I know or know of others in similar circumstances who have been on high doses of Sinemet over a long period of time.
They are prescribed a much lower dosage of Sinemet with the possibility of not needing to take it then continue despite these recommendations to take relatively high doses of Sinemet.
So yes I do think there can be an addictive component to this drug.
Having said that though I clearly recall the trauma of a Sinemet challenge test when your body needs the drug to just move and 12 hrs is spent without the drug...awfully uncomfortable!
Cheers,
Lee