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Common side effects
Most side effects are mild and manageable.
Buprenorphine is generally well tolerated, particularly after the initial adjustment period. The most commonly reported side effects include:
Headache, nausea, constipation
The most frequently reported side effects, particularly in early treatment. These tend to resolve or diminish as the body adjusts to the medication. Hydration and dietary fiber are commonly discussed supportive measures for constipation.
Sweating
Increased sweating is a commonly reported side effect of buprenorphine, particularly at higher doses. It is generally not medically significant but can be bothersome. It often improves over time.
Insomnia and sleep disturbance
Some patients report difficulty sleeping, particularly early in treatment. Sleep disturbance can also be a symptom of residual opioid withdrawal rather than a direct medication effect.
Dental effects
The FDA issued a warning in 2022 about dental problems associated with buprenorphine sublingual and buccal formulations. Buprenorphine films and tablets that dissolve in the mouth have been associated with dental problems, including tooth decay and oral infections. The FDA advises patients to rinse gently with water after the medication dissolves and to maintain regular dental care.
Cardiovascular and liver effects
Less common considerations.
Heart rate
Some patients report changes such as palpitations or a sense of altered heart rate, though significant cardiovascular effects are uncommon at therapeutic doses. Significant cardiovascular effects are uncommon at therapeutic doses. In overdose or when combined with other sedating substances, buprenorphine can contribute to respiratory depression.
Liver effects
Buprenorphine can cause elevations in liver enzymes, particularly in patients with pre-existing liver disease such as hepatitis C or hepatitis B. Clinically significant liver damage from buprenorphine alone is uncommon, but baseline and periodic liver function monitoring is standard practice in patients with liver disease. Patients should inform their physician of any liver conditions.
Anxiety
Some patients report anxiety as a side effect, particularly in early treatment. Anxiety can also reflect undertreated withdrawal or other clinical factors, so it may require assessment rather than assuming it is solely a medication side effect. Distinguishing between medication side effects and withdrawal-related symptoms requires clinical assessment.
Sources
Where this information comes from.
FDA: Dental Problems with Buprenorphine (2022)
FDA safety warning and recommendations regarding dental effects of sublingual buprenorphine formulations.
ASAM National Practice Guideline (2020)
Clinical guidance on buprenorphine side effects, monitoring, and management.
Suboxone Prescribing Information
Full FDA prescribing information including complete adverse effects profile.