Branded drugs dispensed instead of generics at the request of physicians and patients have incurred annual costs of over US$1 billion to the Medicare programme. and US$270 million to patients, reveals a study published in JAMA Network Open .
To reduce financial burden of health care, states across the US have enacted laws to substitute expensive branded drugs with lower-cost generics, either mandatorily or permissively. Despite this, many branded drugs with generic versions available are still prescribed across the country. The team Socal and colleagues, based at Johns Hopkins University, set out to examine the reasons for dispensing branded multisource drugs in the Medicare Part D programme. Medicare Part D is an optional programme set up to help beneficiaries pay for their prescription drugs .
They carried out a cross-sectional study of 169 million Medicare Part D multisource
prescription drug claims in 2017. This was a random sample of 20% of Medicare beneficiaries in the US. Among 169 million claims for 224 multisource drugs, 8.3 million claims (almost 5%) were dispensed with a branded product. Among these claims, almost 60% did not have a recorded reason for branded dispensing. However, 1.4 million claims (16.9%) were made following prescriber requests; and 1.1 million claims (13.5%) were due to patient requests. In total, over 30% of claims were due to prescriber and patient request.
The team calculated that, if all branded dispensing requests by prescribers had been substituted by the corresponding generics, savings to the Medicare Part D programme and Medicare patients could have been US$997 million and US$161 million, respectively. In turn, if all branded dispensing requests by patients had been substituted by generics, savings to Medicare Part D programme and patients would have been US$673 million and US$109 million (55.1%), respectively. The study also found that the drugs that were most likely to be dispensed as a branded product due to physician or patient request were typically those of high cost.
Overall, the team concludes that branded dispensing of multisource drugs requested by prescribers or patients is associated with increased spending for the Medicare programme and patients. To reduce healthcare spending, they urge policymakers to consider ways to discourage prescribers and patients from requesting branded dispensing of multisource drugs.
Conflict of interest
The authors of the research paper  declared that there was no conflict of interest. The study  was funded with a grant from Arnold Ventures.
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1. Socal MP, Bai G, Anderson GF. Factors associated with prescriptions for branded medications in the Medicare Part D Program. JAMA Netw Open. 2021;4(3):e210483.
2. GaBI Online - Generics and Biosimilars Initiative. Medicare Part D favours generics over brand-name drugs [www.gabionline.net]. Mol, Belgium: Pro Pharma Communications International; [cited 2021 Apr 9]. Available from: www.gabionline.net/Generics/Research/Medicare-Part-D-favours-generics-over-brand-name-drugs
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