Lynkuet® can cause serious side effects, including:
- Central nervous system (CNS) effects and daytime impairment. Lynkuet can cause difficulty staying awake (somnolence) and other nervous system effects including fatigue, having a spinning feeling (vertigo), dizziness, and feeling faint (presyncope). If you experience these effects, you should not drive or do hazardous activities until these effects go away.
- Increased liver blood test values. Lynkuet may cause increased liver enzymes. Your healthcare provider will do a blood test to check your liver before you start and 3 months after taking Lynkuet. Stop taking Lynkuet and tell your healthcare provider right away if you have the following signs or symptoms that suggest liver problems:
- feeling more tired than you do usually
- decreased appetite
- nausea
- vomiting
- itching
- yellowing of the eyes or skin (jaundice)
- pale feces
- dark urine
- pain in the stomach (abdomen)
- Risk of pregnancy loss. Taking Lynkuet while pregnant may cause loss of pregnancy or stillbirth. If you think you are pregnant, stop taking Lynkuet and tell your healthcare provider right away.
- Risk of seizures in people with a history of seizures. Seek medical attention right away if you have loss of consciousness or seizure.
Common side effects of Lynkuet include:
- headache
- fatigue
- dizziness
- feeling drowsy or sleepy
- Stomach (abdominal) pain
- rash
- diarrhea
- muscle spasms

