the first dopamine agonist

Around 1992 or so,I started to take parlodel(bromocriptine), the first dopamine agonist.
For a long time before that, I had been taking only sinemet and artane.
(sinemet: 400mg per day, artane: 2 tabs per day)

At first, any change didn't appear.
But, after a interval, when I stopped to take this medicine, I had realised that effect clearly, the duration of medicinal virtues shortened.
Like that, the effect of parlodel is mild as compared to the other dopamine agonists.