I recently read some possible negative effects of ginko biloba, which I had thought was benign. I checked my bottle to see if I was taking more than the recommended amount and was surprised to see that I was. Then I looked at the strength of the capsules and saw that they were 120 mg, not the 60 mg that they once were. They are the same brand that I have been taking for years and I have no idea when they changed. Since then, I have bought a different brand of a couple of supplements because my usual brand was not in stock. When I checked the strength when I got home, they were higher than the brand I had bought before. I think I am going to have to start writing the strength on my shopping list.