Taking a regular multivitamin should be OK. I would be careful of the multi mega vitamins. I take a multi vitamin,mineral and some extra vitamin C. Try to eat a healthy diet, with lots of fresh veggies and fruit.
If you're on Spiro, be careful of taking products containing lots of Potassium and minimize your consumption of bananas.(very high in Potassium) Some other foods high in potassium are: apricots,avocados,bananas,lima beans,blackstrap molasses,brewers yeast,brown rice,dates,figs,dried fruits,garlic,nuts,raisins, spinach,potatoes,wheat bran,yams and yogurt.
This doesn't mean you should eliminate these foods from your diet,Just limit your consumption. 🙂