Help plz! can red korean ginseng really help with erectile dysfunction?

No published RCTs: RCT = randomized controlled trial. Peer-reviewed published RCTs are the gold standard to prove that something works. This is how Big Pharma goes about getting a drug approved by FDA. You can skip this by selling a compound as a dietary supplement (assuming you meet certain other requirements). In this case, you can make any claim you want w/o substantiation (evidence), much less proof of safety.