The economic implications of generic substitution of antiepileptic drugs: a review of recent evidence
Bibliographic record
Abstract
BACKGROUND: The US Food and Drug Administration (FDA) considers generic and branded drugs to be therapeutically equivalent if they are pharmaceutically equivalent and bioequivalent. The American Academy of Neurology (AAN) disagrees and opposes generic substitution of branded antiepileptic drugs (AEDs) without physician and patient approval due to the risk of loss of seizure control. OBJECTIVE: To review the evidence to date surrounding the economic impact of brand-to-generic substitutions of AEDs. METHODS: A systematic search of PubMed and MEDLINE was conducted; the bibliographies of key articles obtained from the search were used to identify additional sources. RESULTS/CONCLUSION: Current literature suggests statistically higher overall healthcare costs during periods of generic AED use than during periods when branded AED are used, consistently demonstrated across different countries (Canada and the USA) and in both stable and unstable epilepsy patients, with more pronounced cost increases in patients receiving multiple generic versions. Brand-to-generic substitutions of AEDs do not necessarily reduce overall healthcare costs and may even increase them.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".