Why Understanding Side Effects Matters
Every prescription medicine can produce unwanted effects. Understanding
potential side effects can help patients have better conversations with
their healthcare professionals.
Commonly Reported Side Effects
The FDA prescribing information for Provigil (modafinil) lists several
commonly reported adverse reactions, including:
- Headache
- Nausea
- Nervousness
- Rhinitis
- Diarrhea
- Back pain
- Anxiety
- Insomnia
- Dizziness
- Dyspepsia
Serious Skin Reactions
The FDA labeling contains an important warning concerning serious skin
reactions, including Stevens-Johnson syndrome. Patients should seek
appropriate medical attention for concerning symptoms and follow the
instructions provided with their prescription.
Allergic and Hypersensitivity Reactions
Serious allergic and hypersensitivity reactions have also been reported.
The prescribing information includes warnings concerning angioedema,
anaphylaxis, and multi-organ hypersensitivity reactions.
Psychiatric Considerations
The FDA labeling recommends caution in patients with a history of certain
psychiatric conditions and advises consideration of discontinuation if
psychiatric symptoms develop.
Drug Interactions
Modafinil can interact with other medicines. The FDA label describes
clinically relevant interactions involving several medicines, including
certain hormonal contraceptives and drugs metabolized through specific
enzyme pathways.
When Should You Speak With a Doctor?
Anyone experiencing unexpected or concerning symptoms while taking a
prescription medicine should contact an appropriate healthcare professional.
Emergency symptoms require urgent medical attention.
Where to Research Vendors
If you are researching online vendor information, you can visit:
This article does not replace professional medical advice. Always consult
an appropriate healthcare professional regarding prescription medicines,
side effects, interactions, and treatment decisions.

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