consider initiating nifedipine at lowest dose. Potentiates digoxin (monitor). Hypotension possible with fentanyl. GI obstruction possible with H 2-blockers, opiates, NSAIDs, laxatives ...
The usual dosage of nifedipine, 10-20 mg p.o. every four to six hours, may cause flushing, headache, dizziness, and nausea. In normotensive women, transient hypotension is rare. No adverse effects ...