Can anyone tell me about my experience, It gives me a lot of head ache every time I want to remember something, I feel heavy, grumpy not interested of everything and every time I read a books and I don't remember I totally forgot what was I'm reading all about and then I keep yawning and then feel so sleepy but I was not like that before and I am not taking any medication not even vitamins I take pain killer or head ache medication like Tylenol or ibuprofen like 4x a year.