I had a very bad reaction to the Lipitor. As you know, a side effect of Lipitor is muscle pain, however this was really really painful and I could hardly walk, basically, I could not walk. The pain is in my left thigh only. Well I am slightly better, it has been 8 days since this all started - I stopped the pills Lipitor 10mg after taking only 3 in 3 days, that is when the pain started. All this from only 3 pills, have you ever heard of such a thing?