$35 on Amazon.
I wouldn’t say I prefer ZMA. I just typically use ZMA on most days and save Z-12 for days I feel really drained and want to sleep solid as fuck, lol. In which case, I’ll usually use both. There’s some overlap I think, but the formula’s are different.
The iodine sup has been night and day. I’m so glad I started taking it. I wish Biotest would make one with Selenium as well.
*I take 1 tablet a day before bed.