Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: These vitamins are NO good. I had recently switched assuming all good prenatals must be comparable. I was SO wrong. It took me a few weeks to realize but then thanks to another Amazon review, I realized these were the culprit. I was having bowel movements 5-6 times a day which is unheard of in pregnancy. The iron & progesterone should be slowing everything down and I just thought I had become lactose intolerant or something. This other review mentioned that the type of iron used in these is controversial because it is known to exacerbate IBS (which I don’t even have). But there is something seriously wrong with these vitamins and I suggest everyone to STAY AWAY.

STAY AWAY! Will cause bowel movements 5-6 times a day.