Hello, I had gone through your question thoroughly and can understand your concern very well. As you are taking treatment for anxiety disorder and you are having submucous fibrosis, you will require vitamin B complex one tablet daily for few days. You can also take vitamin C daily. I would also suggest you to take foods rich in vitamins and minerals like citrous fruits, milk and milk products, green leafy vegetables, etc. Its good that you have already quitted tobacco. You can take vitamin supplements for only few months. Hope this answers your question and let me know directly if you have any further queries, i will be happy to guide you fully.