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Side Effects Of Saw Palmetto. 1  Gastrointestinal problems. 2  Headache and dizziness. 3  Sexual problems. 4  Rhinitis. 5  Increased bleeding. 6  Not safe during pregnancy.
1 Some men report that using beta-sitosterol with saw palmetto makes them grow more and better hair.  Burns. There is some evidence that treating second degree burns with beta-sitosterol and berberine ointment works about as well as conventional treatment with silver sulfadiazine.