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Alleviating flu-like symptoms with dose titration and analgesics in MS patients on intramuscular interferon beta-1a
David W Brandes1, Kim Bigley, William Hornstein
1Northridge MS Center, Northridge, CA 91325, USA. dwbnorth@sbcglobal.net
Objective:
To determine the effectiveness of dose titration and choice of analgesic in reducing flu-like side effects of intramuscular interferon beta-1a (i.m. IFNbeta-1a).
Methods:
Patients were randomly assigned to receive weekly i.m. IFNbeta-1a, with or without dose titration, plus acetaminophen or ibuprofen. After 27 patients had been randomized, the original formulation of i.m. IFNbeta-1a became unavailable and the remaining patients used a pre-packaged liquid formulation, necessitating a change in protocol from initially quarter-dose to half-dose titration. Patients scored presence and intensity of muscle aches, chills, and weakness, and measured body temperature; information was recorded in diaries.
Results:
Forty-seven patients were enrolled; 36 completed the study. Fifteen patients received full-dose therapy plus acetaminophen, eight patients received quarter-dose titration and acetaminophen, 10 patients received quarter-dose titration and ibuprofen, eight patients received half-dose titration and acetaminophen, and six patients received half-dose titration and ibuprofen. The mean number of acetaminophen doses taken was not statistically different from the mean number of ibuprofen doses taken per patient per week in any dose-titration group over measured time intervals (p > 0.05). Symptom scores from acetaminophen and ibuprofen dose-titration groups were combined and compared with the no-titration group. The proportion of patients with a mean increase of > or = 2 from baseline in flu-like symptom score trended lower in the titrated group compared with the no-titration group at 4 hours and 12-15 hours post-injection; these differences reached statistical significance only during the first 2 weeks of treatment (p = 0.015, quarter-dose vs. no titration).
Conclusion:
This study supports the findings of previous studies demonstrating no difference in the effectiveness of acetaminophen and ibuprofen in controlling flu-like symptoms associated with IFNbeta treatment in patients with relapsing-remitting MS. Trends in this small pilot study suggest that the combination of initial dose titration and analgesic administration is useful for the reduction of flu-like symptoms with IFNbeta-1a therapy.
Insights
Dose titration of interferon beta-1a (IFNbeta-1a) combined with analgesics may reduce flu-like symptoms in multiple sclerosis patients. Acetaminophen and ibuprofen showed similar effectiveness in managing these side effects.
Area of Science:
- Neurology
- Pharmacology
Background:
- Interferon beta-1a (IFNbeta-1a) is a common treatment for relapsing-remitting multiple sclerosis (MS).
- Flu-like symptoms, including muscle aches, chills, and weakness, are frequent side effects of IFNbeta-1a therapy.
- Managing these side effects is crucial for patient adherence and treatment success.
Purpose of the Study:
- To evaluate the effectiveness of dose titration strategies for intramuscular interferon beta-1a (i.m. IFNbeta-1a).
- To compare the efficacy of acetaminophen and ibuprofen in mitigating flu-like side effects associated with i.m. IFNbeta-1a treatment.
- To assess the impact of initial dose titration on symptom reduction.
Main Methods:
- A randomized study involving patients receiving weekly i.m. IFNbeta-1a with or without dose titration, alongside acetaminophen or ibuprofen.
- Patients self-reported flu-like symptoms (muscle aches, chills, weakness) and body temperature in diaries.
- Protocol adjustments were made due to formulation changes, introducing quarter-dose and half-dose titration groups.
Main Results:
- Forty-seven patients were enrolled; 36 completed the study.
- No statistically significant difference was found in the mean number of acetaminophen versus ibuprofen doses used per patient per week across titration groups.
- A trend towards lower flu-like symptom scores was observed in the dose-titrated groups compared to the no-titration group, particularly during the initial weeks of treatment.
Conclusions:
- Acetaminophen and ibuprofen demonstrate comparable effectiveness in managing flu-like symptoms during IFNbeta treatment for relapsing-remitting MS.
- Initial dose titration of i.m. IFNbeta-1a, in conjunction with analgesic administration, shows promise for reducing treatment-associated flu-like symptoms.
- This pilot study supports further investigation into optimized dosing and symptom management strategies for IFNbeta therapy.
