we used demoseden for the first time yesterday. I was a bit alarmed at just how sedated Kez was but was assured it was normal. He came round after a few hours. Seemed fine. This morning he had awful muscle tremors. This is listed as a side effect. Vet diagnosed spasmodic colic BUT he's had that before and symptoms didn't fit, for me at least. A few friends have had nasty side effects from it. Any similar experiences?