Saw Palmetto (Serenoa repens): Saw palmetto is an herb that acts to tone and strengthen the male reproductive system. It may be used with safety where a boost to the male sex hormones is required. It is most effective in cases of benign prostatic hypertrophy (enlargement of the prostate gland).87 The treatment of this condition with plant-based medicines is attracting the attention of the medical community.88 It can help in cases of prostatitis (inflamed prostate gland) if combined with echinacea and bearberry.