Just mix up some plantain with water and take it before a meal. It is the seeds that are important here. The bean produces a compound called L-dopa. It corrects the imbalance in the brain between dopamine and acetylcholine. The drug companies regularly prescribe L-dopa for Parkinsons Disease.
Beans are a hell of lot cheaper than drugs.
Not only that the Fava Bean is richer in L-dopa than the standard commercial drug. You will get gas though and have to work up to where your digestion becomes tolerant. The big drug for Prostrate enlargement is Proscar. Yet herbal treatments have been proven in scientific clinical trials to be far more effective. The herbs are saw palmetto, licorice and pumpkin seeds.