Just like everyone else would say smoking is a bad side effect in itself. You do not have to add the supplements into it to get the bad effects.

It should not have any bad effects on a person to take the supplements while smoking, but is probably not going to benefit you either. Smoking is a bad habit in itself, that you personal have to make the decision to quit. 

Taking supplements to help you quit is one of the best things that a person could ever do to help themselves. However, you must be willing to do it before you will notice a change. 

If you are planning on quitting, then those extra supplements will definitely not harm you. Do not overload yourself on supplements though just take the recommended amount on a daily basis and you should not have a problem with any side effects. It is really rare that a person will have side effects from supplements, but there is always that risk that you take.