Modafinil: Rare Teeth Grinding

Modafinil, a medication for sleep disorders like narcolepsy, can cause teeth grinding in rare cases (around 0.15% of users). This isn't a common or FDA-reported side effect, but it's possible because Modafinil stimulates the nervous system. If you experience this, you might notice pain, jaw stiffness, or loose/sensitive teeth. The grinding itself can last up to 24-30 hours (around the medication's half-life) and potentially damage your teeth. To minimize this risk, stay well-hydrated (dry mouth can worsen grinding), talk to your doctor about lowering your dose, wear a mouthguard at night, or avoid other stimulants like caffeine. If you clench your jaw a lot during the day (not just at night), consider relaxation techniques to manage stress and anxiety, which can also contribute to teeth grinding. Ultimately, while Modafinil-induced teeth grinding is uncommon, be mindful of any new dental issues and see a doctor if you experience severe jaw pain or headaches.

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