There's a handy online guide to contradictions that I pull up on the app whenever I want fast info. Even then I make a point of checking three or more separate references ahead of any experiments with my rats.
I'm still getting used to this place and don't fully grasp all the possible ways things might not mix well. I haven't come across any grid or tool that maps out clashes between different items on two axes. Maybe someone knows where to look?
That explanation was probably too vague before, so I'll try again. Some substances share similar actions or goals, and I'd rather not combine ones that could create issues or cancel each other out. What I'm after is a visual aid like a spreadsheet where items line up on both axes and the meeting points use colors to mark safe spots, uncertain ones, or real problems. It feels like something like that should already be out there, yet I haven't tracked it down.