Prostate PQ® Rye Grass Flower Pollen & Quercetin SupplementProstate PQ offers a combination of rye grass flower pollen extract and quercetin to support prostate and sexual health. Graminex rye grass flower pollen extract: Rich in amino acids, antioxidants, and phytosterols to promote prostate health. 500 mg of quercetin per daily dose, a beneficial antioxidant. Everything it should, nothing it shouldnt: The only rye grass flower pollen and quercetin supplement certified by NSF International for content