Drug Name Proventil

Agents from both classes also serve as insecticides. Although they possess high acute toxicity in humans, they are more rapidly degraded than is DDT following their emission into the environment. Tacrine is not an ester and interferes only with the choline-binding site of AChE.
Acetaminophen undergoes conjugation to glucuronic acid or sulfate at the phenolic hydroxyl group, with subsequent renal elimination of the conjugate. At therapeutic dosage, a small fraction is oxidized to the highly reactive N-acetylp- benzoquinonimine, which is detoxified by coupling to glutathione.

 

Ergot alkaloids are obtained from Secale cornutum (ergot), the sclerotium of a fungus (Claviceps purpurea) parasitizing rye. Consumption of flour from contaminated grain was once the cause of epidemic poisonings (ergotism) characterized by gangrene of the extremities (St.Anthony’s fire) and CNS disturbances (hallucinations). Ergot alkaloids contain lysergic acid (formula in A shows an amide).
” However, use of irritant purgatives or cathartics is not without hazards. Specifically, there is a risk of laxative dependence, i. e. , the inability to do without them. Chronic intake of irritant purgatives disrupts the water and electrolyte balance of the body and can thus cause symptoms of illness (e. g. , cardiac arrhythmias secondary to hypokalemia). Causes of purgative dependence (B).