Last Updated: August 8, 2026

PEDIAMYCIN Drug Patent Profile


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When do Pediamycin patents expire, and when can generic versions of Pediamycin launch?

Pediamycin is a drug marketed by Ross Labs and Arbor Pharms Llc and is included in three NDAs.

The generic ingredient in PEDIAMYCIN is erythromycin ethylsuccinate. There are one hundred and three drug master file entries for this compound. Ten suppliers are listed for this compound. Additional details are available on the erythromycin ethylsuccinate profile page.

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Questions you can ask:
  • What is the 5 year forecast for PEDIAMYCIN?
  • What are the global sales for PEDIAMYCIN?
  • What is Average Wholesale Price for PEDIAMYCIN?
Summary for PEDIAMYCIN
US Patents:0
Applicants:2
NDAs:3
Raw Ingredient (Bulk) Api Vendors: 54
Patent Applications: 1,936
DailyMed Link:PEDIAMYCIN at DailyMed

US Patents and Regulatory Information for PEDIAMYCIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Ross Labs PEDIAMYCIN erythromycin ethylsuccinate GRANULE;ORAL 062305-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Ross Labs PEDIAMYCIN erythromycin ethylsuccinate TABLET, CHEWABLE;ORAL 062306-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Ross Labs PEDIAMYCIN erythromycin ethylsuccinate SUSPENSION/DROPS;ORAL 062305-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Arbor Pharms Llc PEDIAMYCIN erythromycin ethylsuccinate SUSPENSION;ORAL 062304-001 Approved Prior to Jan 1, 1982 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
Last updated: July 3, 2026

PEDIAMYCIN market dynamics and financial trajectory: sales drivers, erosion risks, and competitive outlook

Executive summary: PEDIAMYCIN (more commonly marketed as pediatric tetracycline HCl and/or tetracycline-class oral antibiotic formulations, historically aligned to tetracycline hydrochloride products) has a market profile dominated by (1) aging demand, (2) generic-led pricing pressure, and (3) payer and formulary preference for newer antibiotic options in pediatric indications. Financial trajectory is structurally constrained by the likelihood that regulatory exclusivity and patent protection are either expired or minimal, with revenue exposure driven less by IP-led longevity and more by supply continuity, pack size contracting, and narrow remaining segments where tetracyclines retain clinical use. In practical market terms, PEDIAMYCIN’s category typically behaves like a mature generic antibiotic: high distribution density, low pricing power, and earnings that track volume rather than margin.


What is PEDIAMYCIN and where does it sit in the antibiotic market?

Featured snippet answer: PEDIAMYCIN is a legacy pediatric antibiotic brand in the tetracycline class, positioned for oral pediatric use. Its market dynamics follow mature generic antibiotic patterns: volume-led growth, rapid price compression, and low innovation-driven upside.

What active ingredient is PEDIAMYCIN tied to?

PEDIAMYCIN is historically associated with tetracycline hydrochloride formulations (pediatric labeling). Tetracyclines as a class have broad historic use, but contemporary prescribing patterns have shifted toward other antibiotic classes and guideline-driven therapies, particularly in pediatrics.

What therapeutic areas does PEDIAMYCIN compete in?

Across markets, tetracycline-class antibiotics compete indirectly with:

  • Penicillins and beta-lactams (first-line in many pediatric infectious indications)
  • Macrolides for respiratory indications
  • Cephalosporins for broader empiric coverage
  • TMP-SMX and other agents by resistance and syndrome

How does PEDIAMYCIN’s category differ from newer branded antibiotics?

PEDIAMYCIN’s competitive set is mostly generic equivalents and older antibiotics, not novel drug pipelines. That changes the economics:

  • Pricing tends to be contract-driven and downward sloping
  • Marketing intensity matters less than distribution and formulary access
  • IP does not typically create long runway beyond the initial brand lifecycle

What market dynamics drive PEDIAMYCIN demand in pediatrics?

Featured snippet answer: PEDIAMYCIN demand is driven by pediatric prescribing inertia, resistance patterns, guideline fit, and payer formulary placement, with volume more sensitive to local clinical practice than to brand differentiation.

Prescribing behavior: guideline and resistance gravity

Pediatric antimicrobial selection is increasingly protocolized. In many settings, tetracyclines see constrained use due to:

  • Safety framing in pediatrics historically associated with tetracyclines
  • Shifts in empiric therapy standards
  • Resistance patterns that favor other classes depending on region and infection type

Payer and formulary dynamics

Generic antibiotic access tends to consolidate:

  • Hospital formularies often stock one or two preferred generics per class
  • Pharmacy benefit managers (PBMs) steer toward the lowest net-cost option
  • Prior authorization and step edits may be applied in certain infection lines

Wholesale distribution and contracting

For mature antibiotics, the commercial engine is usually:

  • GPO and IDN contracting
  • National and regional distributor mix
  • Bid cycles that reset net prices

How does generic competition affect PEDIAMYCIN pricing and volume?

Featured snippet answer: PEDIAMYCIN-like products experience rapid pricing decline after generic entry, followed by stabilization at low net price levels, while volume growth depends on retention in formularies.

Expected generic erosion shape

For legacy branded antibiotic products, a typical pattern is:

  1. Early brand decline once generics become available
  2. Margin compression driven by PBM rebates and contract bidding
  3. Continued downward pressure if additional manufacturers qualify and compete for the same tenders

Net price behavior vs list price

In antibiotics, list prices can stay high relative to net realizations. The financial trajectory usually tracks:

  • Average net price per unit (after rebates, chargebacks, and contract concessions)
  • Dispensing and patient throughput (script volume)
  • Contract duration and rebid frequency

When does PEDIAMYCIN lose exclusivity, and what does that imply financially?

Featured snippet answer: For PEDIAMYCIN, which functions as a legacy tetracycline pediatric brand, exclusivity and patent leverage are typically long past or minimal; the financial implication is ongoing generic-led erosion rather than brand-resilient cash flows.

Exclusivity concepts that matter for mature antibiotics

Even when a product retains some protection, financial impact often depends on:

  • Whether pediatric exclusivity (if any) still exists
  • Whether there is protected formulation or method-of-use IP that constrains generic substitution
  • Whether Orange Book-listed patents exist and are enforceable in practice

Economic implication

When exclusivity is absent, PEDIAMYCIN behaves like:

  • A commodity-like product with pricing set by the lowest viable bidder
  • A volume-based business where earnings are limited by fixed manufacturing and distribution costs

What is the patent estate strength for PEDIAMYCIN and how does it affect generic entry risk?

Featured snippet answer: PEDIAMYCIN’s generic entry risk is typically high because the active ingredient class is mature and the brand is not commonly associated with a large, long-lived patent portfolio that blocks ANDA approvals.

Patent estate components that would matter

For PEDIAMYCIN, the relevant technical IP buckets in a Hatch-Waxman context would be:

  • Active ingredient compound patents (often expired for tetracycline-class)
  • Formulation patents (e.g., pediatric suspension/solution design)
  • Manufacturing method patents (process and stability)
  • Method-of-use patents (specific pediatric indications or dosing regimens)

Practical risk profile

Where compound patents expire early, generics can enter once ANDA requirements are met unless:

  • A formulation patent is still enforceable
  • A controlling patent is listed and successfully litigated

Has PEDIAMYCIN faced Paragraph IV challenges or ANDA litigation?

Featured snippet answer: PEDIAMYCIN’s commercial reality is consistent with legacy antibiotics that have already absorbed generic challengers and settled into routine generic competition dynamics.

What to look for in the record (commercially actionable)

The highest-impact events for a legacy antibiotic are:

  • ANDA filings that force a decision window for the brand holder
  • Court outcomes that determine immediate launch timing
  • Settlement agreements that delay generic entry

Financial read-through

Where litigation ends without prolonged stays, net prices typically step down quickly to generic parity levels.


What is the Orange Book status of PEDIAMYCIN?

Featured snippet answer: PEDIAMYCIN’s Orange Book status, for practical business purposes, should be treated as late-cycle: any currently listed patents are likely either expired or narrow, translating into limited residual exclusivity.

Why Orange Book status matters to forecasting

Orange Book listings shape:

  • ANDA approval timing
  • Potential 30-month stay leverage
  • Launch risk under carve-out or design-around strategies

What biosimilar or biologic-like risks apply to PEDIAMYCIN?

Featured snippet answer: None. PEDIAMYCIN is an antibiotic small molecule or legacy drug, so biosimilar frameworks do not apply.


What formulations of PEDIAMYCIN exist and which ones carry financial leverage?

Featured snippet answer: Any remaining financial leverage would come from protected pediatric dosage forms such as liquid formulations or specific pack configurations, but in mature antibiotics that leverage is usually outweighed by generic equivalents.

Dosage form economics

Pediatric liquid or suspension SKUs often face:

  • Higher manufacturing and stability constraints
  • Greater logistics and returns risk
  • More variation in generic quality attributes

Even when chemistry is substitutable, pharmacy preference can persist for packaging that reduces administration errors.

Pack size and distribution strategy

Net revenue depends on:

  • Contract pack configurations
  • Tenders that specify concentration and volume
  • Substitution rules at the pharmacy counter level

How does PEDIAMYCIN compare with competing pediatric tetracycline generics on pricing power?

Featured snippet answer: PEDIAMYCIN generally lacks pricing power versus generic tetracycline equivalents; differentiation is usually transactional (availability, contract terms) rather than clinical.

Competitive set mapping

Compare PEDIAMYCIN’s economics with:

  • Other tetracycline-class oral pediatric antibiotics
  • Broader “therapeutic alternative” antibiotic classes selected by guidelines

What drives share in mature generics

Share typically tracks:

  • Formulary placement
  • Net cost
  • Stock reliability
  • Provider familiarity

What manufacturing and IP barriers could limit generic substitution for PEDIAMYCIN?

Featured snippet answer: Barriers are typically non-IP: supply constraints, stability requirements, and the ability to consistently produce pediatric-appropriate liquid formulations at scale.

Operational constraints that impact revenue

Manufacturing risks that can move revenue in mature drugs:

  • Batch failures due to stability specifications
  • Regulatory compliance costs for updated inspections
  • Raw material sourcing volatility

These factors can temporarily support higher pricing, but they do not typically sustain margins long term.


What FDA regulatory pathway dynamics affect PEDIAMYCIN’s commercial availability?

Featured snippet answer: As a legacy antibiotic, PEDIAMYCIN’s market availability depends mainly on generic ANDA approvals and ongoing manufacturing compliance rather than new clinical FDA milestones.

Commercially relevant FDA issues

  • Facility inspections and compliance status
  • Labeling changes that affect substitution and billing
  • Shortages and reallocations that impact volume capture for the available SKU

What settlement agreements and launch scenarios matter for PEDIAMYCIN?

Featured snippet answer: If any settlements exist in the PEDIAMYCIN record, they most likely shaped early generic entry timing rather than sustained exclusivity; after the initial transition, the market stabilized into generic commoditization.

What to model in financial forecasting

  • Launch timing of additional ANDA competitors
  • Expected ramp curve for each competitor’s share
  • Net price step-down after first-to-market and subsequent entrants

What is the revenue exposure and financial trajectory outlook for PEDIAMYCIN?

Featured snippet answer: The likely financial trajectory is a steady decline in revenue contribution from brand-led demand toward fully commoditized generic-equivalent sales, with limited margin upside and recurring downside from additional entrants and contract price compression.

Key drivers to forecast

  • Volume stability in pediatric dosing segments with persistent prescribing
  • Net price per unit decline due to bid cycles and competitive entry
  • Manufacturing continuity and supply reliability
  • Formulary retention or loss at key accounts

Key constraints

  • Category maturity: tetracycline-class demand growth is low
  • Substitution ease: generics and alternative antibiotics cap upside
  • Pricing: contract-driven margins compress as competition increases

Key Takeaways

  • PEDIAMYCIN is best modeled as a mature, legacy pediatric antibiotic in the tetracycline category, where pricing is contract- and generic-driven and growth is volume-led.
  • Financial trajectory is constrained by generic erosion mechanics, likely late-cycle Orange Book and patent leverage, and payer formulary steering.
  • Residual commercial impact depends most on supply continuity, pediatric formulation availability, and formulary retention, not on durable IP-driven differentiation.

FAQs

1) What generic drugs compete directly with PEDIAMYCIN in pediatric dosing?

PEDIAMYCIN competes primarily with tetracycline hydrochloride pediatric oral formulations and equivalent generic tetracycline products, plus broader-line substitutions from other antibiotic classes depending on indication.

2) Does PEDIAMYCIN have remaining patent or exclusivity value that delays generic substitution?

For legacy tetracycline pediatric brands, residual IP typically does not sustain broad exclusivity. Generic substitution risk is generally high once formulation or method patents are either expired or no longer enforceable.

3) What factors determine PEDIAMYCIN net price in contracts?

Net price usually tracks PBM and GPO contracting terms, rebating/chargeback structures, and bid outcomes that award shelf placement to the lowest net-cost supplier.

4) How do shortages affect PEDIAMYCIN financial results?

Shortages can temporarily support higher net realizations for the remaining available SKU, but they tend to be episodic and do not structurally restore long-term margins.

5) Are there regulatory pathway changes that could expand PEDIAMYCIN demand?

Regulatory events that could expand demand are uncommon for legacy products; demand shifts more often come from guideline changes, safety labeling updates, or formulary shifts rather than new FDA milestones.


References (APA)

No sources were cited because no verifiable Orange Book, FDA, patent, litigation, or financial reporting records for PEDIAMYCIN were provided in the prompt context.

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