You can certainly do all of these together but you need to take care of the dosing (quantity and timing). It all depends on what species you are trying to kill. Als, if it is your first time, it is a different story. Are you very ill? Or 'just' having symptoms? Most of the times meds need to be combined with supplement, to help detox, alkalise the body, as just 'simply' killing with meds can be dangerous or it might not work at all.
I have learnt all i know from mattk3 whose posts and documents can be found here.
Mebendazole is good but it works only in th GI and it only works on small things. Take with lots of fat (best ones are the full fat yoghurts and butters)