Prostatilen

Prostatilen is a complex of water-soluble peptides extracted from the prostate tissue of cattle, typically young calves or bulls ^[2][3]. It is one of a group of organ-specific peptide preparations, sometimes called cytamins or peptide bioregulators, that were developed in Russia and are each derived from a particular animal tissue; related members of the family include Cortexin from the brain cortex, Thymalin from the thymus, and preparations made from liver, pineal gland, and cartilage ^[2]. Rather than being a single defined molecule, it is a mixture of low-molecular-weight polypeptides thought to act on the tissue from which they were obtained ^[2].

The preparation is used chiefly in urology for chronic prostatitis, including the non-bacterial forms, and for benign prostatic hyperplasia ^[1][3]. In an experimental model of prostatic enlargement in rats, prostatilen prevented the rise in prostate mass and volume and shifted the balance of oxidative markers back toward normal, lowering lipid peroxidation products and restoring glutathione peroxidase activity in the gland ^[1]. Laboratory work on cultured tissue has reported that prostate-derived peptides selectively stimulate the growth of prostate cell cultures, an effect linked to increased expression of the proliferation marker PCNA and reduced expression of the p53 protein ^[2]. In clinical use it is generally combined with other treatments; a randomized comparison in men with category III chronic abacterial prostatitis found that rectal prostate-extract medicines, including prostatilen, reduced prostate swelling and pain and improved urinary flow and quality-of-life scores ^[3].

Prostatilen is registered and marketed as a medicine in Russia and several other post-Soviet countries, where it is used mainly as rectal suppositories ^[3]. It has not undergone the large-scale international trials required for approval by agencies such as the United States Food and Drug Administration or the European Medicines Agency, and most of the published evidence comes from smaller studies in Russian-language journals ^[1][3]. Because the source material is animal tissue, it is treated as a biologically active peptide complex rather than a single synthetic drug ^[2].

Reported to be well tolerated in its regional clinical use, with allergic reactions being the main noted concern given the animal-tissue origin. Rigorous long-term and independent safety data are lacking. As an animal-derived biological, sourcing and purity matter, and it is not an approved drug in most Western countries.