howMed Know Yourself
Acetylcholine is the prototype of the group parasympathomimetics. It is NOT USED AS A DRUG Acetylcholine is rapidly hydrolyzed, if … Read More »
Parasympathomimetic Drugs
Also known as Cholinergic drugs or Cholinomimetic drugs or Cholinoceptor activating drugs. Definition These are the group of drugs which … Read More »
Ergotamine vs Ergometrine
Ergotamine Ergometrine Peptide alkaloid Amine alkaloid Polypeptide chain present Polypeptide chain absent Powerful antagonist on alpha receptor and partial agonist … Read More »
Bromocriptine
Bromocriptine is a semi synthetic ergot derivative, having potent effects on dopamine receptors. Pharmacokinetics Rapid but partial absorption from GIT. … Read More »
Ergot Alkaloids
Ergot alkaloids are the group of agents or different alkaloid preparations having specific affects on different receptors. Classification Derivatives &constituents … Read More »
Terazosin, Tamsulosin and Yohimbine
Terazosin Terazosin is useful in prostate diseases. Tamsulosin Selective alpha 1 a blocker, useful in benign prostatic hypertrophy, especially in … Read More »
Prozasin
Selective alpha 1 blocker, causing decrease in TPR and venous return. It has no effects on alpha 2 receptors. Pharmacokinetics … Read More »
Phenoxy benzamine
Irreversible alpha blocker, forms covalent bonds. Although being non selective, it is more selective for alpha 1 than alpha 2 … Read More »
Phentolamine
Phentolamine is non selective reversible alpha blocker, histamine agonist (H1, H2) and muscarinic agonist. It also has inhibitory effects at … Read More »
Alpha Adrenergic Blockers (Alpha Antagonists)
The sympathetic system starts from the central nervous system and reaches the ganglia and then the adrenergic neurons, where neurotransmitters … Read More »