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For the most part it is
No, there's more than enough regulation, at least in the civilised nations. What you want is more enforcement.
Regulation is cheap, enforcement is expensive. Politicians love making new rules, because it looks like doing something. They hate having to find the money for enforcement, because it reveals just a small part of the cost of excessive regulation.
It is a general principle of politics, democratic or dictatorial, that enforcement is limited, so more regulation simply leads to lower overall compliance as enforcement resources get spread thinner and the risk attached to non-compliance becomes correspondingly lower.
gbj_tester-
No, there's more than enough regulation, at least in the civilised nations.
Yes. Most of the supplements are coming from the US. So, there's the problem. What is regulation without enforcement? "Here's a bunch of rules, ignore them though because we won't be penalising any of you that slip in toxic shit to your products."
hippy
For the most part it is. There's no risk for suppliers if they contaminate (knowingly or unknowingly) their products. People cheating by going looking for dodgy shit is a separate matter.