Untitled, for Revision

I’m kinda proud of the concept here, but I think the idea is better than the execution, and wish I could figure out how to more effectively pull off the conceit. Suggestions welcome.

(With sincere apologies to Will S.)

I’ll take my ease by grain and milligram
Until such slight matter turns my scale’s beam.
There’s Dalmane, that’s for remembrance: pray, Love,
Remember: and there’s Paxil. That’s for thoughts.
There’s Luvox, and Zoloft; there’s Ativan,
Though it compels the colic in many
Who’ll take it: I must weigh my
Wants with a difference. There’s Halcion: I’d
Ask for Tegretol, hey non nonny, to
Set fast the sense and virtue of mine eye
But it makes in me a distaste for sex
And bonny sweet Robin is all my joy.