The plant is found in temperate zones worldwide. Special Cautions Even at recommended doses, Male Fern is quite toxic, producing side effects such as diarrhea, nausea, queasiness, severe headache, and vomiting. There are no known drug interactions. If You Are Pregnant or Breastfeeding Do not use during pregnancy. How to Prepare Check with your doctor.
Numerous alternatives are now available.
Typical Dosage Remember, therapeutic dosages often prove toxic. Wait several weeks before re-treatment. Strengths of commercial preparations may vary. Follow the manufacturer's labeling whenever available. Overdosage Overdosage can lead to heart, kidney and liver damage, mental disorders, spasms, paralysis, and vision damage, including blindness.