Drain and sink unblocker in dishwasher

The water in my dishwasher was gathering in the sump and not draining. Long story short after cleaning the filters and getting to the little rubber back flow value with water still sitting I poured some sink and drain unblocker down to try to sort the problem. However I am now unsure if this was the right thing to do due to the toxic chemicals. I have ran two empty cycles at 70 degrees with a dishwasher tablet and some bicarb to try and rinse the residue away. Is my dishwasher still safe to use or is there anything else I can do to make it safe and rectify my mistake !!!