Periwinkle

How does Periwinkle work?

Periwinkle can lower blood pressure. It can also help reduce swelling (inflammation) and have a drying (astringent) effect on the tissues.

Are there safety concerns?

Periwinkle is UNSAFE. It can cause side effects such as nausea, vomiting, and other stomach and intestinal symptoms. It can also cause nerve, kidney, and liver damage. Large amounts can cause very low blood pressure.

Do not take periwinkle if:
  • You are pregnant or breast-feeding.
  • You have low or high blood pressure.
  • You have trouble with constipation.
  • You are scheduled for surgery in the next two weeks.

Therapeutic Research Faculty copyright

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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