I recently went and filled my usual Adderall 30mg prescription ,, however this time I opened the bottle and had some round light orange pills marked U31. I thought I had gotten the wrong medicines by mistake but looked on the bottle and the description matched the pills so I then googled it and can't find any info on these new to me, not sure if they are actual new to everyone. I'm wondering if anyone has taken them and how they work compared to other generics. I normally take the Barr brand and took my first dose of these this morning and FELL ASLEEP. This isn't good at all. Anyone have comments?