I've only been on Sinemet for a little over a year now and get slight dyskinesia once in awhile, but nothing to worry about. I've met a ton of people over the last year that are on Sinemet exclusively. Some get dyskinesia, and some don't. That's just part of the fun "gamble" that we all have to take when deciding what meds to use and how much. Sadly, it's the best option we have right now. You take the agonists and run the risk of sudden sleep attacks, edema, and possible life-altering OCD behaviors. What's a person with PD to do?