Parasympathetic stimulation to treat hypertension?

Hi:

I'm looking for a parasympathetic-stimulant -- in the form of a pill -- that:

1. Has minimal side effects
2. Has minimal withdrawal effects
3. Has minimal rebound effects
4. Not addictive -- physically or psychologically
5. Does not lose effect over time
6. Immediate-release
7. Fast-acting yet with persistent intended effects [i.e. treating hypertension]
8. Most potent
9. Highest concentration of the active ingredient in the pill

This active ingredient in this pill should have ultimate effect of treating hypertension by directly stimulating the neurons in parasympathetic nervous system. This will, in turn, signal the heart to slow down and result in a decrease in blood pressure.

Which medication should I take?


Thanks,

GX