I'm on my first bottle so I don't have any differences that I can see. I will say that a few weeks back I was exposed to some kids with sniffles, allergies, colds, etc. some of my friends ended up with what ever the kids had and I got nothing. I'm continuing use, I have read enough to convince me to take it. Easy to take I just put it my am coffee.
I'm grateful to resume using Lions Mane. I ran out of the tinture I was using and decided to contact Birch Boys because a friend of mine spoke highly of their reputation and the care they take with processing their tinctures.
This is my first experience with tinctures. I must say, I look forward to my Lion's Mane every morning! I feel more positive and focused since adding it to my daily routine. It's a quality product and arrived very quickly.