Tell yas my experience, in the hope it may help someone:
A bit past 40, I was having the classic 'around 40 year old' symptoms, lots of knacker's discomfort, short stream time, always wanting to go but often nothing, like a British motorcycle, hard to start in the moring etc.
About the same time I moved to China. like most Asians, Chinese drink hard, generally a white spirit made from sorghum, 55% alcohol. I fell in to the 'New Friend' drinking trap, and was getting just about paraletic at least 2 times a week. The hangovers were out of this world.
I spent a lot of time researching and testing about every hangover cure I could find, very little worked until I spoke to a young Doctor on the net who swore he had not a cure, but a reasonable fix for the problem. It works, take the fix before you go out, again 5 minutes before bed, and in the morning when you wake up.
It is a specific mix of Vitamin B, 1 part each of B1, B2 , B6 and 2 parts B12. Theres is a medical reason of what they do inside your liver or something, that breaks down the alcohol of your main organs or something (Hey, I ain't a Doctor).
You don't buy a typical off the shelf multi B tablet, you buy the raw vitamins seperate. Here in China you buy them in small jars, and you take about 300 to 500 millgrams of each. Seems a hell of a lot when they are all in your hand, but it's the dose you need.
I started taking these doses daily to combat the nights out drinking or socialising till late otherwise, and they really work and the hangovers were far less intrusive, and they give an energy boost to add.
BUT....
After a few months I stated to notice a large difference with my prostate. I started returning to normal downstairs. It was just great, what a relief. Now I suspected that the vitamins were doing it so continued to take them every morning, even though I had learned how to say no and slow the drinking down (almost zero these years).
For most, when you take something daily, over time you just start to forget and eventually you just stop, not intentional, just how it ends up.
Guess what ... as i slowed down and eventually stopped taking the Vit Bs, about a year or more later my prostate starts playing up again, slowly some symptons started coming back. Back onto the Vit B full course daily, and just weeks later symptons completely gone again. ... and taken in the morning, don't take them in the evening or you won't sleep (unless you have been drinking of course), quite the stimulant, bit like caffein.
I have gone through this cycle a few times over the last 13 years, and absolutely 100% this is my cure for my prostate troubles. I have passed it on to a number of people, one Oz guy in China shouted me out to dinner 4 months after I put him onto it, he went from daily agony to 'cured' in that time frame. He would rave about it every time I met him later on. His missus was pretty happy about it all too, nudge nudge.
I am not a doctor, this is not medical advice, nor can I prove it out as fact, I'm just relating a personal story as it happened to me, your mileage may vary. It is critical to take the mix as I described. again; equal parts B1, 2 and 6, and double B12.