Hi
Chasteberry Supplement interacts with Contraceptive pills, Antipsychotic drugs and medications against Parkinsons disease.
Thyroid medications do not interact with chasteberry supplements.
However in case of Menstrual bleeding, stomach upset or Dizziness, please consult a Physician.
In case of further doubts, please feel free to write back to me.
Regards
Dr Prashik Meshram