Dear Joao: Sorry this reply is late but I'm running 5days behind on my mail - to many home projects now that school's out- You asked if my husband takes Sinimet with his Cogentin - Yes, he is on 800mg Sinimet CR. He has started having some problem with dyskinesia so we hoped to reduce the Sinimet by taking Bromocriptine too - but so far no luck on any reduction- We've tried three times before to remove the final 1 mg. Cogentin since we feel it contributes to his difficulties with constipation and hallucinations - but the tremors have always been under good control. We are now in the process of trying to reduce the Cogentin gradually enough to discontinue it but we aren't sure if the Sinimet & Bromocriptine will keep the tremors away. We will be keeping track if his ongoing but mild hallucinations leave him as we reduce the Cogentin, (we don't know for sure that the hallucinations aren't caused by the Sinimet or the Bromo - but the Neuro says the Cogentin is not supposed to be doing him any good anymore) The reduction will take about 3-4 weeks - will let you know the results - if he has to stay on it, it will be a good bet that nothing else he's used does well against tremor. Any other Cogentin users out there having "withdrawel" difficulties - using it for tremor reduction?........ Hope we can be of help....... Marie Carepartner Husband 69/l2