Being dizzy and light headed is a common side effect of quitting smoking for some people. One of many side effects. It should subside with time, but I can't say how long. It's different for everyone. Like Machiavelli said, if it gets too bad, or if it just doesn't feel right, go see a doctor to be on the safe side. Another side effect that's not talked about much is constipation. Most people will get it when they quit smoking. Something to look forward to. Prune juice really helps with that one, just don't over do it!
Congratulations on going 6 weeks without a cigarette! Be sure and reward yourself, that's an awesome start to your quit journey.
I have quit smoking from last 6 weeks. But till now everyday I feel light headed and sometime frequent dizzy spell.
Please advice what shall I do.Is these a common effect of quitting cigarettes
Prune juice really helps with that one, just don't over do it! 
