Drinking fresh whey and feel dizzy. Why?

I was advised to drink fresh whey coz I have some health issues... Ive got some bottles of it, and keep it in the fridge... Well , now, I have left the last bottle of it and have noticed that from two days I feel little dizziness and like ive been drinking alcohol... The whey tastes a little bit more sour then in the first days... ( 4 days back)maybe it s expired?? ... Why do I fell so and could it be that I get drunk from "expired whey"
Asked Nov 18, 2014
Edited Nov 18, 2014

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