Nah, I wouldn't toss em. I tried those capsules too, as has been said by others, do NOT snort it. I tried, and good cunting bollockshole-munching jesus H god OWCH!
This was more painful than having virola, or epena power-blasted up the nose the traditional way, or snorting a bump of bufotenine that I had (and I hang my head in abject shame, but make a plea in mitigation that I was much less experienced as a chemist/molecular biologist than I now am), incorrectly neutralized.
That still, as I found out moments later after putting it up my hooter (the bufotenine), had some sulfuric acid present.
Predictably enough, it hurt like all fucking fuck on a fucking well fuckstick covered in eau-de-motherfuck.
Insufflating BK-2C-B hurt worse than getting H2SO4 up the nose. Plugging failed utterly, no effect, it dimerized too fast, and left a slight residue of purple within the syringe.
Intravenous injection however, did succeed, and not by half measures, I think i got too much although never felt in danger. I did have to take a very strong muscle relaxant, tizanidine (a relative of clonidine, an alpha2 adrenoreceptor agonist), as there was a bit of cramping, and a feeling of coldness, which led me to take to bed with some music on, and snuggle up in the quilt.
I'd shot 2 of the capsules, taking care to mix, filter and bang the stuff taking as little time to prep it as possible, and it hit me HARD, full on +++ (1/2+), a solid plus three and a half at least, dissociated, colorful, headspace becoming a maelstrom of concepts, ideas, synaesthesia and many memories being relieved.
A very powerful experience indeed, the sheer SPEED with which the bk-2C-B hit however really knocked me off my feet.
Snorting it..never, ever again, not ever, not for any reason. That felt like I'd just been slugged with a bag full of broken bricks, sent me staggering on my feet, and apparently I made so much noise shouting out with the shock of it, and let loose with such a stream of vitriolic language and general cursing that my family shouted back to see if I was alright or not.
Ended up sticking a line of local anaesthetic (not coke, I mean a pure, simple, non-stimulant Na+ channel blocker, I forget which, might have been tetracaine) up my nose which alleviated the agony.
The rest of that dose, thankfully I'd snorted only a miniscule quantity, got prepped and IVed. The onset was almost instantaneous, and if I hadn't have taken to bed, it would probably have put me there flat out anyway. A worthwhile experience, which I think I will definitely do again, although at a somewhat lower dosage and certainly without insufflating any.