After many hours of web crawling I was uncertain which brand to buy. There's a lot of posts saying one is better than the other and that they are the same. So I thought I'd do an experiment using a blind test to determine if there was any difference between the two. Luckily you can buy modvigil and modalert at modup.net and their sister site medsforbitcoin.com In an ideal world I would buy the original Provigil modafinil as a control, but its out of my budget (>$300 for 30 x 100mg). Anyway $150 and 12 days later I get the 2 generics of modafinil to sample. Method: Crushed up 1 200mg modvigil tablet and 1 200mg modalert tablet into powders then capped the powders. I used food coloring to differentiate between the two powders. A capsule was picked at random, I then went through out my day, recording my performance and then at the end of the day opened the other capsule to see which brand I had taken. I repeated the experiment 4 times with 5 days in between each time. Condensed Results: Modalert - intense headache lasting all day, feel like Im on caffeine, urine smells strange Modvigil - awake, motivated, happy, calm-alterness, urine smells strange Conclusion My tests no way indicate that Modvigil is better Modalert. Definitely more testing needs to be done and I hope Modup or someone does a test to see what's in Modalert. There was a trend showing that modvigil is better, but it makes no sense why that would be. Modup has a good article Modvigil vs Modalert explaining that the two generics are chemically identical. I tried to keep all variables consistent between the tests, but I cant rule out that food/mood/tablet binders or other factors influenced the outcome. Modafinil is a pycoactive so a number of things could influence my subject experience of the generics. Other members here should try to replicate my findings. So the community can have a consensus of this issue.