What are the side effects of primidone?

Common side effects of primidone include dizziness, drowsiness, drowsiness, lack of coordination, lightheadedness, loss of appetite, nausea, and vomiting. Primidone can also cause serious side effects, including an allergic reaction to the drug or any ingredient in the medication. For example, this drug may contain yellow dye No. 5 (tartrazine); some people are allergic to this additive. If you experience signs of an allergic reaction, such as swelling, hives, and difficulty breathing, seek immediate medical attention (call 911). You should talk to your doctor if you experience any of these other serious side effects: decrease in sexual function; double vision or distorted eye movement; fever; mood changes; or unusual exhaustion or weakness. Primidone may cause unexpected side effects that are not described above. If you experience an unanticipated reaction while taking primidone, talk to your doctor.

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