Self medication is harmful, stop the medicines. White tongue can be from many reasons. More detailed history is required. Are there any other complaints other than being white like is it associated with pain or bad odour, is there any bleeding, is there a swelling. If you have just white tongue and no other complaints you may wait and watch.
Next Steps
If you have any of the above complaints consult a physician.
Health Tips
Certain conditions are harmless and self limiting and will go even without treatment.