Next syrup gives me problems: Drosera tincture 10ml Ventolin syrup 150ml Pholcodine syrup

Answering your question is not easy. There may just be a neeslag because you dilute an alcoholic solution in a watery middle. On the other hand, a reaction can also occur between components of the syrup and the tincture. I see that in the tincture among others looi substances occur and I would not wonder that they react with salbutamol sulfate. I would try to measure the pH and see what happens when I lightly acid with e.g. small amounts of citric acid 50 à 100 mg. Maybe it will be clear? Other ingredients are also mentioned for Drosera tincture such as essential oils. Can also make it cloudy. We would have to solubilize that with Tween.

Whatever you might do is the following: You take 30 tablets Respacal and extract them with 50 ml of warm water after they have been finely rubbed. After that you filter, the filtrate catches up and washes the precipitation with 25ml hot water. This wash water add to the filtrate as well as 75ml orange peel syrup. This should then continue for the Respacal syrup. I suggest this slightly more complicated editing because it would allow it to fall back to Respacal. I suspect that Respacal and Ventolin are not two identical prodcuts anyway???