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Two double-blind, placebo-controlled studies found that grass pollen extract can help reduce symptoms of benign prostate enlargement (technically called benign prostatic hyperplasia, or BPH). 1 One small, double-blind study found evidence that a product containing grass pollen, the pistils (seed-bearing parts) of grass, and royal jelly (a product made by bees) may be helpful for PMS . 2 Another small double-blind study found benefit with the same combination for treatment of menopausal symptoms . 3
Grass pollen extract has also shown promise for treating prostatitis . In a six-month, double-blind study of 60 men with non-bacterial prostatitis, use of the grass pollen extract was more effective than placebo in relieving symptoms. 4 Grass pollen has additionally been investigated for its usefulness in treating (inflammation or infection of the prostate), prostate cancer, 5 and high cholesterol . 6 Animal studies also suggest that it may protect the liver from damage by some types of poisons. 7 However, the scientific evidence for all of these other proposed uses remains very weak.
- Buck AC, Cox R, Rees RWM, et al. Treatment of outflow tract obstruction due to benign prostatic hyperplasia with the pollen extract, Cernilton: A double-blind, placebo-controlled study. Br J Urol. 1990;66:398–404.
- Winther K, Hedman C. Assessment of the effects of the herbal remedy Femal on the symptoms of premenstrual syndrome: a randomized, double-blind, placebo-controlled study. Curr Ther Res Clin Exp. 2002;63:344–353.
- Winther K, Rein E, Hedman C. Femal, a herbal remedy made from pollen extracts, reduces hot flushes and improves quality of life in menopausal women: a randomized, placebo-controlled, parallel study. Climacteric. 8(2):162-70.
- Elist J. Effects of pollen extract preparation Prostat/Poltit on lower urinary tract symptoms in patients with chronic nonbacterial prostatitis/chronic pelvic pain syndrome: a randomized, double-blind, placebo-controlled study. Urology. 67(1):60-3.
- Habib FK, Ross M, Buck AC, Ebeling L, Lewenstein A. In vitro evaluation of the pollen extract, cernitin T-60, in the regulation of prostate cell growth. Br J Urol. 66(4):393-7.
- Wójcicki J, Samochowiec L, Bartłomowicz B, Hinek A, Jaworska M, Gawrońska-Szklarz B. Effect of pollen extract on the development of experimental atherosclerosis in rabbits. Atherosclerosis. 62(1):39-45.
- Juzwiak S. Experimental evaluation of the effect of pollen extract on the course of paracetamol poisoning [in Polish; English abstract]. Ann Acad Med Stetin. 1993;39:57–69.