2 doctors weighed in:

Does anyone know if all blue green algae supplements have the chemical in them?

2 doctors weighed in
Dr. Su Fairchild
Integrative Medicine
1 doctor agrees

In brief: Depends

Some chlorella and spirulina can possibly be contaminated by heavy metals and other chemicals, but check manufacturer's data sheet and ask if they test for these things.

In brief: Depends

Some chlorella and spirulina can possibly be contaminated by heavy metals and other chemicals, but check manufacturer's data sheet and ask if they test for these things.
Dr. Su Fairchild
Dr. Su Fairchild
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