Can a plum extract ease prostate troubles?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Provide voluntarily signed and dated informed consent. * Be in good health as determined by medical history and routine blood chemistries. * Age between 40 and 60 yr (inclusive). * Body Mass Index of 18.5-34.9 (inclusive). * Body weight of at least 55 kg. * An IPSS score of 8-19 (inclusive). * Symptoms of benign prostatic hyperplasia (BPH) for at least 6 months prior to screening (e.g. Incomplete emptying: the feeling the bladder is full, even after passing urine; Frequency: the need to pass urine often, about every one to two hours; Intermittency: the need to stop and start several times when passing urine; Urgency: feeling the urgent need to pass urine; Weak stream: a weak urine flow; Straining: trouble starting to pass urine or the need to push or strain to pass urine; Nocturia: the need to wake up at night more than two times to pass urine. * Normotensive (seated, resting systolic blood pressure \<140 mm Hg and diastolic blood pressure \< 90 mm Hg. If the first measurement is slightly elevated above these limits, the subject will be given a brief (5 minute) rest period, and two more measurements will be taken. The average of all three measurements will be used to determine eligibility. * The subject is willing and able to comply with the study protocol. Exclusion Criteria: * Current neurogenic bladder dysfunction. * Current bladder neck contracture or urethral stricture. * Current acute or chronic prostatitis or UTI. * History of prostate cancer. * Use of any other herbal medication for the treatment of BPH, associated symptoms, and erectile dysfunction within the past month. * Current hematuria of unknown etiology. * History of radiotherapy. * History of unstable or new-onset cardiovascular/cardiorespiratory, liver, or renal conditions. * History of diabetes or endocrine disorder. * History of use of medications or dietary supplements known to confound the study or its endpoints. * Alcohol consumption (more than 2 standard alcoholic drinks per day or more than 10 drinks per week) or drug abuse or dependence within the past 6 months. * Current smokers or smoking within the past month. * History of hyperparathyroidism or an untreated thyroid condition. * History of malignancy in the previous 5 years except for non-melanoma skin cancer (basal cell cancer or squamous cell cancer of the skin). * Other known gastrointestinal or metabolic conditions that might impact nutrient absorption or metabolism, e.g., short bowel syndrome, IBS/IBD, diarrheal illnesses, history of colon resection, gastro paresis, Inborn-Errors-of-Metabolism (such as PKU). * Chronic inflammatory condition (e.g., rheumatoid arthritis, Crohn's, ulcerative colitis, Lupus, HIV/AIDS, etc.). * Known sensitivity to any ingredient in the test formulations as listed in the product label. * Currently participating in another research study with an investigational product or have been in another research study in the past 30 days. * Any other conditions that, in the opinion of the medical staff, could confound the primary endpoints or place the subject at increased risk of harm if they were to participate.