yeah, I wish herbal medicine was taken more seriously and incorporated along with existing healthcare practices with regulations and proper education and training. That sort of thing kind of exists right now with small independent herbalist schools but it's very marginal, underfunded, and understudied. One other reason we need to free medical research from researching only what is profitable.

iirc supplements are regulated fairly well in Canada, so I buy Canadian brands when possible. The US being an ancap hellworld, you're at the mercy of third-party review organizations. Look for companies that hire third-party analysis of their products; They're usually quite proud about it on the label because they fucking paid for it.