It is a tree from western India and southern North America. It can grow to be 6 to 10 feet tall and is characterized by thorny leaves that are fan-shaped.

Saw palmetto prostate benefits:

Possible efficacy in improving the results of transurethral resection of the prostate.Some people also use it for benign prostatic hyperplasia, and androgenic alopecia, but current data is insufficient for the recommended treatment.

Saw palmetto side effects :

Its side effects are generally rare, weak and reversible. The most common are abdominal pain, constipation, decreased libido, pain, dizziness, fatigue, headache, runny nose and vomiting.

Pregnancy and breast-feeding:

 Probably not safe, given the hormonal activity of saw palmetto. Avoid using it.

Reference:

https://naturalmedicines-therapeuticresearch-com.acces.bibl.ulaval.ca/databases/food,-herbs-supplements/professional.aspx?productid=971