I've noticed HGW works a lot better than straight Icariin. Also, never heard of BCS labs so I wouldn't be too sure of the quality. You could also try finding a bulk powder at 50 or 60% and that would work much better. Icariin does work instantly for "bedroom enhancement". It is a PD5 inhibitor, just like viagra. You're only using 20 percent and like I said, who knows the quality you're getting from BCS. For short term until find a better source with higher quality and potency try slowly increasing your dosage. I'd start with at least 6 caps and work up. Also make sure you take it on a completely empty stomach.