The search for a medication equivalent to Brixadi 96 mg is complex because it is an extended-release, once-monthly subcutaneous injection administered by a healthcare professional. The therapeutic goal is to maintain a steady plasma concentration of buprenorphine to treat opioid use disorder (OUD). Other buprenorphine products, including different Brixadi doses, other long-acting injections, and daily sublingual films or tablets, offer varying absorption rates and dosing intervals. Patients and providers considering switching treatments or exploring options must focus on achieving a stable, therapeutic level of buprenorphine rather than a simple milligram-for-milligram conversion.
Brixadi Dosing and Internal Conversions
Within the Brixadi product line itself, a patient on the 96 mg monthly injection is receiving a total buprenorphine dose equivalent to a patient on a 24 mg weekly injection. For example, a patient transitioning from weekly to monthly Brixadi who was stable on 24 mg weekly would be converted to the 96 mg monthly dose. This internal conversion illustrates how the same medication is delivered over different timeframes, making the administration schedule a key consideration.
Comparison with Sublocade: Another Monthly Injection
Sublocade is another long-acting buprenorphine injection administered monthly, but its dosing schedule is different from Brixadi's. Sublocade comes in 100 mg and 300 mg monthly doses, often beginning with a higher dose. While both provide consistent buprenorphine levels, they are not direct dosage equivalents. A patient on Brixadi 96 mg monthly would need a careful assessment by their provider to determine if they could switch to a Sublocade dose and which one would be most appropriate.
Key Differences Between Brixadi and Sublocade
- Dosing Flexibility: Brixadi offers both weekly and monthly options with more dosage strengths (64 mg, 96 mg, 128 mg monthly). Sublocade offers only monthly dosing in 100 mg and 300 mg strengths.
- Injection Sites: Brixadi can be injected into the buttock, thigh, abdomen, or upper arm. Sublocade is only injected into the abdomen.
- Formulation Differences: Though both contain buprenorphine, the specific formulations and release profiles differ, requiring a prescriber to carefully manage any transition between the two medications.
Comparison with Daily Sublingual Medications
Daily, self-administered sublingual products, such as Suboxone (buprenorphine/naloxone) films or tablets and Zubsolv (buprenorphine/naloxone) tablets, offer a different approach to OUD treatment. Unlike the steady release from a monthly Brixadi injection, these medications provide a daily dose of buprenorphine.
Based on clinical conversion guidelines, patients who were stabilized on a daily sublingual buprenorphine dose of 12-16 mg are candidates for the monthly 96 mg Brixadi injection. This demonstrates that the equivalent daily oral dose is not a simple calculation but is determined by a patient's stable response to treatment before transitioning to the long-acting injectable.
Key Differences Between Brixadi and Daily Sublinguals
- Administration: Brixadi is a monthly injection administered by a healthcare provider, while sublingual films or tablets are self-administered daily.
- Adherence: The once-monthly injection reduces the risk of non-adherence compared to daily medication.
- Abuse Potential: The long-acting injectable format significantly reduces the potential for misuse and diversion associated with daily take-home medication.
Other Alternatives for Opioid Use Disorder
Beyond buprenorphine-based treatments, other medication-assisted treatments for OUD exist, though they are not considered equivalents of buprenorphine.
- Vivitrol (Naltrexone): This is an opioid antagonist, meaning it blocks opioid receptors entirely. Vivitrol is a once-monthly injection for patients who are fully detoxified from opioids, as buprenorphine cannot be in their system when they start.
- Methadone: A full opioid agonist, methadone is typically administered daily in a clinic setting under strict supervision. It functions differently than buprenorphine by fully activating opioid receptors to suppress withdrawal and cravings without causing the same high.
Comparing Key Buprenorphine-Based OUD Medications
Feature | Brixadi (Monthly) | Sublocade (Monthly) | Suboxone (Daily) | |
---|---|---|---|---|
Dose | 96 mg | 100 mg or 300 mg | 12-16 mg daily* | |
Active Ingredient | Buprenorphine | Buprenorphine | Buprenorphine/Naloxone | |
Route of Administration | Subcutaneous (under the skin) injection | Subcutaneous (under the skin) injection | Sublingual film or tablet | |
Administration Frequency | Once every 28 days | Once per month | Once per day | |
Who Administers? | Healthcare Provider | Healthcare Provider | Patient (self-administered) | |
Injection Sites | Buttock, thigh, abdomen, or upper arm | Abdomen | N/A | |
Ideal Candidate | Patients stable on 12-16 mg/day sublingual buprenorphine | Patients stable on 8-24 mg/day sublingual buprenorphine | Individuals who can reliably adhere to daily medication | |
Primary Benefit | Consistent dose, less risk of diversion | Consistent dose, less risk of diversion | Patient control over daily dosing, flexible to start | *Equivalent daily dose for stabilization prior to monthly injection |
Conclusion
In conclusion, there is no single, simple medication that is a direct equivalent to Brixadi 96 mg. This extended-release monthly injection is part of a broader family of buprenorphine-based treatments for OUD, including weekly Brixadi injections, monthly Sublocade injections, and daily sublingual products like Suboxone. A patient stabilized on a 96 mg monthly Brixadi dose would likely have been previously stable on a daily sublingual buprenorphine dose of 12-16 mg, but this is a conversion, not an exact equivalent substitute. Choosing the best medication-assisted treatment depends on individual patient needs, treatment history, and clinical factors, and should always be determined by a qualified healthcare provider. The significant differences in administration frequency, site, and dosage flexibility are critical factors to consider when comparing these treatment options.
- Further Information: For comprehensive prescribing information, refer to the official FDA documents for Brixadi: https://www.brixadihcp.com/pdfs/brixadi-prescribing-information.pdf.