Anticholinergics
• Anticholinergics are a class of medications that inhibit parasympathetic nerve impulses by selectively blocking the binding of the neurotransmitter acetylcholine to its receptor in nerve cells.
• central nervous system stimulatory effect mainly on the medullary respiratory center.
Interaction with other drugs
• The use of theophylline is complicated by its interaction with various drugs, chiefly cimetidine西咪 替丁, some antibiotics (Macrolide & Fluoroquinolones) and phenytoin苯妥英, and that it has a narrow therapeutic index, so its use must be monitored to avoid toxicity.
The main actions of theophylline
• increasing renal blood flow
• some anti-inflammatory effects: stabilize and inhibit mast cell, eosinophil, neutrophil and macrophage