in case anyone is curious as far as can be determined no ill effects. no real great effects either resulted. bk is much stronger than the 5-mapb 40mg insufflated while peaking on bk resulted in very little change maybe more music appreciation for about an hour. but no real impact on the trip and 40mg is enough to be felt for sure when snorted normally. maybe increase in dose will increase the effects maybe it will increase the danger good luck figuring it out the only other report i have been able to find was a guy who tried it twice and said at higher doses it felt like it could be dangerous.