Like anything else, everyone reacts or is affected differently by whatever supplement or compound they take, but it took me a bit of research to learn about Ashwagandha somewhere between 6 and 12 months ago and I was obviously skeptical about it. People debate the different types or extracts, but I've had similar results with whichever brand I've tried, but I make sure to use KSM-66 now.
I always refused to take any RX for depression, anxiety, and stress-related issues but between life events constantly occurring back-to-back and in seemingly no end in sight based on the frequency, I needed to figure something out. I had pretty severe anxiety and would have a crippling anxiety attack not daily but frequently enough that it was concerning. Stress from work made this work and I would feel my heart drop and panic set in for even the most minor bullshit despite knowing I was overreacting.
I haven't researched its usage for kidney health, I take other stuff listed to aid in kidney support but everyone raved about the positive mental effects it had.
I was trying to figure out the proper dosage to use, and I started initially taking it pre-bed to help relieve anxiety/stress to help me fall asleep faster and improve sleep quality. This is what I did for a while, and it seemed to have a positive effect, albeit it took some time. I then switched to using it both morning and night, and the effects seemed similar to taking it pre-bed but I felt like this did a bit too much overall emotional numbing rather than having the positive effects that I wanted without anything noticeably negative.
I currently take it with the last whole meal of the evening (at around 7:00PM) and this has been working great for me.
I use the KSM-66 brand and when I took it twice a day I was taking 1g with my first meal and 1g pre-bed. I now take 1g (which is 2 caps of the brand I use) with the last whole meal of the day and it seems to be the sweet spot for me. I would say that it took several weeks for me to notice a significant effect, maybe a month or so, but it's also easy to not notice whether or not it works or not, if that makes sense. I don't get a stimulant effect from it but it keeps me calm and it isn't necessarily noticeable because I haven't had severe stress or an anxiety attack since supplementing with it, which is a good thing and shows that it does something for me, because I wouldn't think about it unless I continued having those somewhat frequent episodes. Lol