I was initially skeptical of these. My first week (5 days) trying them, I had weird dreams and didn't sleep well, but after taking a couple weeks off I tried again with the micro and I'm in love. I have ADHD but don't take meds, and these have a similar experience to taking Concerta: a gentle nudge on the back of my brain that lowers the energy of activation for tasks that I'm resistant to and makes it easier for me to get started and keep going on things. It's made a very gentle but noticeable change on my workday when I take one around 11am, and definitely counteracts the afternoon slump. I take the regular size (not the macros).
For users: Start with the regular size and see if it works for you. If the first week is weird, take some time off and try again! For the company: I appreciate the streamlined packaging, but I'd really like to see a more environment-neutral packaging approach. There's already too much plastic in the world.