morphine is an opiate which diaelates your pupils,and yea that would be awfull sucking it though a straw you should have just took the pill as is or scraped the top layer off to realease it all at once,same concept,or snorted the whole thing(not at once that would kill you do it in quarters and look it up on erowid.org)snorting one lasted me about 6 hours just takeing a little line every now and again but then i like nose candy =P