text: Yo, check it out, I'm 'bout to drop some knowledge,
  'Bout a drug called PMCG, let's go to college.
  Anticholinergic, it's the real deal,
  N-ethyl-2-pyrrolidylmethylcyclopentylphenyl glycollate, for real.
  
  In the muscle of the cat, fast and slow,
  Flexor hallucis longus and soleus, yo.
  Lower doses, they potentiate the twitch,
  0.25 to 10 mg, that's the switch.
  
  But higher doses, they bring the depression,
  Above 10 mg, no more aggression.
  Indirect or direct, it's all the same,
  PMCG affects both without no shame.
  
  When the muscles are stimulated on repeat,
  Dose and frequency, yo, they meet.
  Potentiation happens with low frequency,
  5-30 Hz for soleus, that's the key.
  
  FHL needs 10-50 Hz to feel alive,
  But high frequency tetani, they take a dive.
  80 Hz and above for soleus, that's too much,
  And for FHL, it's 150 Hz and such.
  
  Atropine and caramiphen, they do the same,
  Potentiating and depressant, ain't that a game?
  Hyoscine, in some cats, it's the same deal,
  But in others, it's just a depressant, that's the real.
  
  These drugs work their magic, it's quite a sight,
  Potentiating actions, musculotropic, alright?
  But higher doses, they bring the depression,
  Like curare and direct action, no aggression.
  
  So there you have it, the effects of PMCG,
  On muscles in the cat, ain't that a key?
  Potentiation, depression, and actions galore,
  In the world of pharmacology, we explore.