That's a problem. The other side of that is "natural = unstandardized doses" That's become a big problem with cannabis, which has had huge potency upgrades through both selective breeding and concentrates.[1][2]
The good thing about cannabis used to be that the effective dose and the hazardous dose were a long way apart, and it was hard to reach the hazardous dose. That's changed.
[1] https://www.sciencedaily.com/releases/2020/11/201116092241.h...
[2] https://www.nbcnews.com/health/kids-health/states-legalized-...