Pharmacology.
Leflunomide’s active metabolite (M1) inhibits dihydro-oratate dehydrogenase, thereby inhibiting pyrimidine biosynthesis. M1 exhibits immunomodulating and anti-inflammatory effects.
Administration and Adult Dosage.
PO for rheumatoid arthritis 100 mg/day for 3 days, then 20 mg/day. Reduce dose to 10 mg if 20 mg is not tolerated.
Pediatric Dosage.
Safety and efficacy not established.
Geriatric Dosage.
Same as adult dosage.
Dosage Forms.
Pharmacology.
Sumatriptan is a serotonin (5-HT) analogue and a selective agonist at 5-HT1D receptors in cerebral vascular smooth muscle. Receptor activation results in migraine relief by vasoconstriction of intracranial blood vessels and attenuation of the release of vasoactive peptides responsible for inflammation of sensory nerves.
Administration and Adult Dosage.
Prevention
Lifestyle modification is one measure that people can take to lower their risk of tension headaches. They should get enough sleep and eat nutritious meals at regular times. Skipping meals, using unbalanced fad diets to lose weight, and insufficient or poor-quality sleep can bring on tension headaches.
Pharmacology.
Alprazolam is a triazolobenzodiazepine that is equal in efficacy to other benzodiazepines for generalized anxiety disorder but more effective in the treatment of panic disorder. Although alprazolam has some efficacy in major depression, it is less effective than heterocyclic antidepressants.
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