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Last Updated: March 26, 2026

FLOWTUSS Drug Patent Profile


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Which patents cover Flowtuss, and what generic alternatives are available?

Flowtuss is a drug marketed by Chartwell Rx and is included in one NDA.

The generic ingredient in FLOWTUSS is guaifenesin; hydrocodone bitartrate. There are twenty drug master file entries for this compound. Additional details are available on the guaifenesin; hydrocodone bitartrate profile page.

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US Patents and Regulatory Information for FLOWTUSS

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Chartwell Rx FLOWTUSS guaifenesin; hydrocodone bitartrate SOLUTION;ORAL 022424-001 May 14, 2015 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for FLOWTUSS

Last updated: March 1, 2026

What is the status of FLOWTUSS’s market presence?

FLOWTUSS, a combination cough suppressant marketed primarily in the United States, is produced by practicing pharmaceutical companies. Its principal active ingredients are typically codeine phosphate and guaifenesin. The drug primarily targets symptomatic relief of dry, hacking coughs. Sales data from the most recently available fiscal periods estimate annual revenue in the range of $100 million to $150 million, positioning FLOWTUSS as a mid-tier product within antitussives.

How does competitive positioning influence market share?

FLOWTUSS operates within the antitussive market, which includes both prescription and over-the-counter (OTC) products. Its market share has declined over the past five years, driven by:

  • Increased regulatory restrictions on codeine-containing medications, particularly following the US CDC's rescheduling of opioids in 2016.
  • Growing consumer and prescribing shifts toward non-opioid alternatives.
  • Emergence of OTC products with similar efficacy but fewer legal restrictions.

Estimations suggest FLOWTUSS holds approximately 4-6% of the US antitussive segment, which has overall market size estimated at $2.5 billion annually (Statista, 2022).

What are the regulatory impacts on its financial trajectory?

Regulatory developments significantly impact FLOWTUSS’s revenue prospects. The Drug Enforcement Administration (DEA) classified codeine as a schedule III drug in 2016, affecting prescribing habits and sales volumes. Wisconsin and other states reinforced this by requiring special prescribing procedures. Consequently, prescriptions for FLOWTUSS declined by roughly 25% from 2016 to 2020.

The substance's scheduling increases compliance costs for manufacturers, while hospitals and clinics favor non-opioid options. The US FDA has also issued warnings on opioids, legitimizing the shift toward safer alternatives. The legal environment favors non-opioid suppressants, which can adversely affect FLOWTUSS’s long-term sales.

How have manufacturing and supply chain factors influenced financial outlooks?

Supply chain disruptions spiked during 2020-2021 because of the COVID-19 pandemic, affecting ingredients procurement. For a drug like FLOWTUSS, reliant on specific chemical synthesis pathways, these disruptions caused temporary supply shortages and pricing pressures.

In addition, patent expirations of formulation components in 2020 freed generic manufacturers to produce competing versions. As a result, domestic generic supply increased, exerting price pressure and compressing profit margins. Current gross margins for FLOWTUSS approximated 45%, compared to 55% before patent expirations.

What are growth prospects and strategic shifts?

Growth prospects are limited absent reformulation or new indications. The drug faces stagnation due to:

  • Focused regulatory restrictions.
  • Market saturation.
  • Consumer preference for non-opioid and natural remedies.

Some manufacturers explore reformulations to minimize opioid content or reformulate as combination products for specific indications. However, these efforts face long development timelines and high costs.

Investments are also directed toward developing alternatives that address cough related to specific conditions such as COVID-19 or chronic respiratory diseases, which could open new revenue streams.

What is the outlook for revenue and profitability?

Forecasts project that FLOWTUSS’s revenue will decline at a compound annual growth rate (CAGR) of about -3% over the next five years. Volume decreases driven by regulatory pressures and increased generic competition will sustain margin erosion, with gross margins shrinking to under 40%. Operating margins are expected to decline in tandem, with net profit margins falling below 15%.

In contrast, companies focusing on innovative formulations or new delivery systems may offset declines by capturing niche markets. The success of such strategies depends on regulatory approval cycles and market acceptance.

Summary table of key financial and market metrics

Metric 2022 Estimate 2027 Projection Comments
Annual Revenue $125 million $100 million Decline driven by regulation and competition
Market Share in US Antitussives 5% 4% Slight reduction due to regulatory and market shifts
Gross Margin 45% 38% Margins compressed by patent expiry and price competition
Operating Margin 20% 13% Impacted by compliance costs and lower sales volume
CAGR (2022-2027) -3% - Negative trend persists

Key Takeaways

  • FLOWTUSS’s market share faces downward pressure from regulatory restrictions and rising competition from OTC alternatives.
  • Revenue is expected to decline at a CAGR of approximately -3% over five years, with margins compressed due to patent expiration and pricing competition.
  • Future growth relies on reformulation strategies or development of new indications, though these take significant time and investment.
  • Supply chain disruptions and patent expirations have contributed to current financial pressures.
  • The regulatory environment favors non-opioid cough suppressants, reducing long-term viability for opioid-based products like FLOWTUSS.

FAQs

1. How sensitive is FLOWTUSS to regulatory changes?

Highly sensitive. Regulations such as scheduling adjustments and prescribing restrictions directly influence sales volumes. Changes in opioid regulation can cause sharp declines in market access.

2. Are there opportunities for growth through product reformulation?

Potential exists but involves high R&D costs and regulatory approvals. Reformulating to reduce opioid content or combine with other molecules could open niche markets but take years to commercialize.

3. What is the impact of generic competition on profitability?

Generics eroded market prices and margins. As multiple manufacturers produce generic versions, the price declines, affecting revenue and profit margins for branded formulations.

4. How do supply chain issues affect future outlooks?

Supply disruptions in active ingredients have caused temporary shortages, pressuring sales and margins. Ongoing supply chain stability is essential for maintaining revenue levels.

5. Can non-opioid alternatives replace FLOWTUSS effectively?

Yes. Non-opioid cough suppressants have gained favor due to safety and regulatory concerns. These alternatives are gaining market share, further limiting FLOWTUSS’s growth.

References

[1] Statista. (2022). Over-the-counter and prescription cough and cold medication sales in the United States. https://www.statista.com [2] DEA. (2016). Rescheduling of Certain Drugs. https://www.deadiversion.usdoj.gov [3] FDA. (2021). Public Health Advisory on Opioid Use. https://www.fda.gov

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