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It was printed in the zine Songs of Innocence.
Reactions and Reviews
'Panacea' was fairly good *if* you can swallow the premise that Blake (thanks to the ever-convenient midwipe) is a total sexual innocent. 
Avon deals with Blake's sexual dysfunciton and cures him with one encounter. Blake is dumb and naive, and Avon makes Blake give himself an enema before they begin. The sex is short and cliched, no angst to speak of . Grade: D 
Avon helps Blake rediscover sex and 'his manhood' after Blake and Gan screw up (so to speak) a mission because neither can perform the requisite bargain-sealing act. 
This has a very nice, flirty, clever and gentle Avon - I really like the conclusion too. Blake is a bit silly, but that's OK. It's worth noting that the enema thing does happen and is weird (fanfic sex is not this realistic. It's not necessary), but what's weirdest about it is how blink-and-you-miss-it it is. Why is it there? Anyway - this is fine.