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Congressional Research Service
informing the legislative debate since 1914


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March  1, 2023


Selected Issues in Pharmaceutical Drug Pricing


Many  factors influence the prices consumers pay for
prescription drugs. Congress has repeatedly attempted to
address high drug prices through legislation, including bills
that seek to increase generic competition, lower prices for
certain health care entities that serve rural and vulnerable
populations, and regulate drug price negotiations through
the Medicare program. Congress has also proposed to cap
out-of-pocket Medicare costs, increase drug price
transparency, permit more drug importation, and regulate
pharmacy  benefit managers. This In Focus reviews several
issues affecting drug prices of potential interest to the 118th
Congress.

Economics of the Pharmaceutical
Industry and the Life Cycle of Drugs
In 2020, U.S. expenditures on outpatient prescription drugs
were $348 billion, accounting for 8.4% of total health care
expenditures. Over the last 20 years, this percentage has
been as high as 10.5% in 2006 but has otherwise remained
between 8%  to 10%. The Congressional Budget Office
found that from 2009 to 2018, the average net price of a
prescription-the price of a prescription after subtracting
the discounts and rebates that manufacturers provide to
private insurers and federal programs-fell in both the
Medicare Part D and Medicaid program, reflecting the
increased use of lower-cost generic drugs, which was
partially offset by rising prices for brand-name drugs.
Despite these trends, concern about the price of prescription
drugs has drawn much attention in Congress, partly due to
the high price of sole-source (brand-name) drugs and
biological products (biologics).

Researching, developing, obtaining approval for, and
marketing pharmaceutical products has generally been a
high-risk, high-reward endeavor. The discovery,
development, and testing phases can be complex and
lengthy, with a low success rate (-1 in 10,000 candidate
molecules, according to some studies). However,
pharmaceutical companies that succeed in bringing a new
product to market benefit from exclusivity and, as sole-
source providers, can set a higher price for their product in
the absence of competition. As the market for a
pharmaceutical product grows, sales and profits typically
increase until competitors enter the market, either (1) as
other products with similar functions and clinical
applications receive their own separate approvals and are
launched; (2) as exclusivity rights expire, permitting others
to produce bioequivalent versions of the original product
(i.e., generics or biosimilars); or (3) as the market matures
and sales decline.

While pharmaceutical companies that produce sole-source
drugs benefit from a lack of competition, the buyers'
market for drugs (purchasers) also lacks sufficient


competition to lower drug prices for patients through an
efficient market. Health insurers, including private plans
and public programs, typically contract with pharmacy
benefit managers (PBMs) for drug benefit management
services that include developing and maintaining
formularies (lists of covered drugs), negotiating prices with
drug companies including discounts and rebates, and
reimbursing pharmacies for drugs dispensed to
beneficiaries. Currently, the PBM market is dominated by
three companies, raising questions about adequate
competition and whether the negotiated discounts and
rebates result in lower prescription drug prices for patients.

Policies to mitigate the high price of sole-source drugs
include efforts to modify the timing and degree of
competition through changes in the length and scope of
exclusivity rights, and to impose certain restrictions on drug
prices and price increases over time.

Patent Rights, Regulatory Exdlusivkties,
and   Generic Competition
Intellectual property (IP) rights play an important role in the
development and pricing of prescription drugs and
biologics. Two forms of IP are particularly important for
pharmaceuticals. To encourage innovation, patents grant
inventors the exclusive right to make and sell a novel
invention (such as a new drug), potentially enabling the
patent holder to charge higher-than-competitive prices
during the patent term. Similarly, the Food and Drug
Administration (FDA) grants regulatory exclusivities to
pharmaceuticals meeting certain criteria. During a period of
regulatory exclusivity, FDA will not accept and/or approve
applications for a generic or biosimilar form of the drug.

IP rights are typically justified as necessary for
pharmaceutical manufacturers to recoup their costs in
research and development, including clinical trials and
other tests necessary to obtain FDA approval and bring a
drug to market. However, IP rights are sometimes criticized
as contributing to high prices for pharmaceutical products
in the United States by deterring or delaying competition
from generic drug and biosimilar manufacturers. For
example, some Members   of Congress have criticized
certain pharmaceutical patenting practices as unduly
extending periods of exclusivity.

Studies show that generic competition lowers drug prices.
Generic forms of prescription drugs often cost a fraction of
the price of a brand-name drug before generic entry.
Whether  and when generic or biosimilar competition is
permitted, however, depends on the IP rights in the drug
and, in many cases, litigation under the specialized patent
dispute procedures of the Hatch-Waxman Act (P.L. 98-417)

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