Yes, but instead of the recommended 15g-30g, you'd have to ingest much, much more, depending on purity. If I remember right, something like Prague Powder can do the trick, but you'd need somewhere around 200g-250g to do the trick.
Edit: As was stated below, I was mistaken for citing and linking the suicide wiki. That was completely my bad and so I've removed the link. The information in my original sentence also appears to be in error, as @Stan has pointed out the actual amount that would, possibly, be required. Which is way too large an amount for consumption, in my opinion.