How does Dilantin (phenytoin) affect bone density in people with epilepsy?
Phenytoin (Dilantin) can contribute to bone thinning over time, which is an important consideration for long-term use. It works by prompting the liver to break down vitamin D rapidly, flushing it from the body faster than normal.
Low vitamin D then Show Full Answer
How does Dilantin (phenytoin) affect bone density in people with epilepsy?
Phenytoin (Dilantin) can contribute to bone thinning over time, which is an important consideration for long-term use. It works by prompting the liver to break down vitamin D rapidly, flushing it from the body faster than normal.
Low vitamin D then leads to low calcium levels, and without enough of either, bones can become weaker and more prone to fractures. People with epilepsy are already 2 to 6 times more likely to experience bone fractures compared to the general population. If there are concerns about bone health while taking phenytoin, a neurology team can help by:
- Monitoring for side effects related to bone loss
- Recommending vitamin D or calcium supplements
- Adjusting the dosage
- Exploring whether switching to a different anti-seizure medication might be appropriate
It's also worth noting that staying active with weight-bearing exercises (like walking or light strength training) and getting some sunlight can help support bone density. Always check with your doctor before making any changes to medication or lifestyle routines.
July 21
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