Dilantin (phenytoin) Can Cause Vitamin D Deficiency

Dilantin (phenytoin) is probably one of the dirtiest drugs, but is necessary as it treats an obviously serious condition (seizures). It has many clinical quirks that you need to be aware of. 72 year old female with a long history of seizures was on a maintainence dose of 200 mg twice daily. Seizures were well […]
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