If you experience chronic constipation, or if eating prunes and drinking prune juice doesnât solve your problems, contact your doctor for professional advice. Also, make sure to talk to your doctor if you begin to experience: 1  rectal or abdominal pain.  blood in stool.
agonist agÂ·oÂ·nist (Äg'É-nÄ­st) n. A contracting muscle that is resisted or counteracted by an antagonistic muscle. A substance that can combine with a cell receptor to produce a reaction typical for that substance.
An agent that acts in physiological opposition: a muscle that contracts with and limits the action of an agonist with which it is pairedâcalled also antagonistic muscle. 4 The short version of these formal definitions can be reworded as an agonist muscle being the muscle that works to achieve a desired action (e.g. looking left), while an antagonist muscle exists to perform the opposite action (e.g. looking right).