Drug Name Differin

Inhibitors of AChE are, therefore, indirect parasympathomimetics. Their action is evident at all cholinergic synapses. Chemically, these agents include esters of carbamic acid (carbamates such as physostigmine, neostigmine) and of phosphoric acid (organophosphates such as paraoxon = E600 and nitrostigmine = parathion = E605, its prodrug).
Therefore, absorption of molecules (e. g. , glucose, NaCl) occurs isoosmotically, i. e. , solute molecules are followed by a corresponding amount of water. Conversely, water remains in the bowel when molecules cannot be absorbed. With Epsom and Glauber’s salts (MgSO4 and Na2SO4, respectively), the SO4 2– anion is nonabsorbable and retains cations to maintain electroneutrality.

 

Apropos nomenclature: antibiotics are produced by microorganisms (fungi, bacteria) and are directed “against life” at any phylogenetic level (prokaryotes, eukaryotes). Chemotherapeutic agents originate from chemical synthesis. This distinction has been lost in current usage.
Sulfonamides are produced by chemical synthesis. The basic structure is shown in (A). Residue R determines the pharmacokinetic properties of a given sulfonamide. Most sulfonamides are well absorbed via the enteral route. They are metabolized to varying degrees and eliminated through the kidney. Rates of elimination, hence duration of effect, may vary widely.