If youre only taking one bottle than theres really no chance of ODing what so ever. as long as it ONLY CONTAINS DXM as has been said everywhere else then you should be all right. Do some research on erowid.org and read the FAQ on dextroverse.org totse has some info too. Mr. white, the man who wrote that faq has been researching dxm since he was a kid so its reputable and you'll find alot of good tips there for your tripp, hope you have a good one and be safe about it. remeber to start small. Peace