I started taking ketotifen in the middle of last week - 4mg three times a day.   I have also had a very stressful period at the same time - the unexpected death of a very young relative and some other things.  I have noticed that I am clearing my throat more often and I think my throat feels a little tight off and on.  Is this likely the ketotifen or do you think it is a coincidence and more likely a response to a lot of stree?  I am not sure whether to take my night dose of ketotifen tonight or not.  Advice from you experienced people, please.  Thanks.