CLINICAL TRIALS PROFILE FOR MORPHINE SULFATE

505(b)(2) Clinical Trials for Morphine Sulfate

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials

Trial Type	Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
New Dosage	NCT00266786 ↗	Safety and Efficacy of Multiple Doses of Intranasal Ketorolac in Postoperative Pain Following Major Abdominal Surgery	Completed	Egalet Ltd	Phase 3	2005-12-01	Ketorolac has been marketed for several years in other forms (tablet and injectable) for the short-term relief of pain. This study will test whether a new dosage form (nasal spray) containing ketorolac is effective at relieving the pain of major abdominal surgery, and will also assess product safety. Previous studies with the nasal spray have suggested that it is similar to the previously approved injectable form in effectiveness for pain relief and in its safety profile. Patients will be randomized in a 2:1 ratio to receive intranasal ketorolac or placebo when the pain reaches a moderate level (40 on a scale of 100) following surgery. After the first dose, subjects will receive study drug every 6 hours for 48 hours, and then as needed (up to 4 times a day) for a total of 5 days. If pain is not adequately relieved by the study drug, subjects will be given morphine sulfate or other standard analgesics. Follow-up safety evaluations will occur about 1 and 2 weeks after the start of dosing. Subjects will be asked to answer questions about their pain relief and any possible side effects of the drug during the study, and will be given physical examinations, including nasal evaluations, before and during the clinical trial. A small amount of blood will be drawn for routine clinical laboratory testing.
New Dosage	NCT00266786 ↗	Safety and Efficacy of Multiple Doses of Intranasal Ketorolac in Postoperative Pain Following Major Abdominal Surgery	Completed	Luitpold Pharmaceuticals	Phase 3	2005-12-01	Ketorolac has been marketed for several years in other forms (tablet and injectable) for the short-term relief of pain. This study will test whether a new dosage form (nasal spray) containing ketorolac is effective at relieving the pain of major abdominal surgery, and will also assess product safety. Previous studies with the nasal spray have suggested that it is similar to the previously approved injectable form in effectiveness for pain relief and in its safety profile. Patients will be randomized in a 2:1 ratio to receive intranasal ketorolac or placebo when the pain reaches a moderate level (40 on a scale of 100) following surgery. After the first dose, subjects will receive study drug every 6 hours for 48 hours, and then as needed (up to 4 times a day) for a total of 5 days. If pain is not adequately relieved by the study drug, subjects will be given morphine sulfate or other standard analgesics. Follow-up safety evaluations will occur about 1 and 2 weeks after the start of dosing. Subjects will be asked to answer questions about their pain relief and any possible side effects of the drug during the study, and will be given physical examinations, including nasal evaluations, before and during the clinical trial. A small amount of blood will be drawn for routine clinical laboratory testing.

All Clinical Trials for Morphine Sulfate

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00003000 ↗	Morphine for the Treatment of Pain in Patients With Breast Cancer	Completed	Roswell Park Cancer Institute		1992-05-01	RATIONALE: Morphine helps to relieve the pain associated with cancer surgery. Giving morphine in different ways may offer more pain relief. PURPOSE: This randomized clinical trial is studying how well morphine injected directly into the underarm area works compared with morphine injected into the back of the shoulder in treating pain in patients who have breast cancer and who are undergoing axillary lymph node dissection.
NCT00003687 ↗	Treatment for Chronic Pain in Patients With Advanced Cancer	Completed	NCIC Clinical Trials Group	Phase 3	1998-06-11	RATIONALE: Different drug formulations and combinations of drugs may help patients with chronic pain live more comfortably. It is not yet known which regimen is most effective for chronic pain. PURPOSE: Randomized phase III trial to compare the effectiveness of different morphine formulations with or without dextromethorphan in treating chronic pain in patients who have advanced cancer.
NCT00020618 ↗	Inhaled Morphine Compared With Morphine By Mouth in Treating Cancer Patients With Breakthrough Pain	Completed	Dana-Farber Cancer Institute	Phase 2	2001-03-01	RATIONALE: Morphine that is inhaled may be more rapidly absorbed than morphine that is given by mouth. It is not yet known if inhaled morphine is more effective than morphine given by mouth in relieving breakthrough pain. PURPOSE: Randomized phase II trial to compare the effectiveness of inhaled morphine with that of morphine given by mouth in treating cancer patients who have breakthrough pain.
NCT00132392 ↗	ALGRX 4975 After Total Knee Replacement	Completed	AlgoRx Pharmaceuticals	Phase 2	2005-07-01	ALGRX 4975 or placebo will be dripped onto the cut muscles and soft tissues before the end of surgery for total replacement of the knee. Each subject will undergo a screening visit; a hospitalization, during which total replacement of the knee will be performed; and follow-up visits at 2, 6, and 12 weeks after surgery. In addition, once discharged, subjects will be contacted by telephone daily up to Day 14. Subjects will complete pain and medication diaries during the first 2 weeks following surgery and will return these diaries at the 2 week visit. Starting on the afternoon of Day 0 (the day of surgery), pain on active range of motion (ROM) of the operated knee will be measured each morning at 8 AM ± 2 hours and each afternoon at 3 PM ± 3 hours. In addition, if the subject ambulates, pain with ambulation will be measured during the first ambulation in the morning and during the first ambulation after noon. Subjects will complete the Brief Pain Inventory - Short Form (BPI-SF) preoperatively, and at the 2, 6, and 12 week visits. Subjects will be questioned regarding the use of assistive devices (cane, walker, wheelchair, bedside commode, or other assistive devices) at screening, at discharge, and at the 2, 6, and 12 week visits. The active ROM on flexion of the knee, measured using a goniometer, will be recorded at screening and at the 2 week visit. Sensory mapping of the knee will be performed at screening and at the 12 week visit.
NCT00266786 ↗	Safety and Efficacy of Multiple Doses of Intranasal Ketorolac in Postoperative Pain Following Major Abdominal Surgery	Completed	Egalet Ltd	Phase 3	2005-12-01	Ketorolac has been marketed for several years in other forms (tablet and injectable) for the short-term relief of pain. This study will test whether a new dosage form (nasal spray) containing ketorolac is effective at relieving the pain of major abdominal surgery, and will also assess product safety. Previous studies with the nasal spray have suggested that it is similar to the previously approved injectable form in effectiveness for pain relief and in its safety profile. Patients will be randomized in a 2:1 ratio to receive intranasal ketorolac or placebo when the pain reaches a moderate level (40 on a scale of 100) following surgery. After the first dose, subjects will receive study drug every 6 hours for 48 hours, and then as needed (up to 4 times a day) for a total of 5 days. If pain is not adequately relieved by the study drug, subjects will be given morphine sulfate or other standard analgesics. Follow-up safety evaluations will occur about 1 and 2 weeks after the start of dosing. Subjects will be asked to answer questions about their pain relief and any possible side effects of the drug during the study, and will be given physical examinations, including nasal evaluations, before and during the clinical trial. A small amount of blood will be drawn for routine clinical laboratory testing.

Clinical Trial Conditions for Morphine Sulfate

Condition Name

Condition Name for Morphine Sulfate
Intervention	Trials
Pain	35
Postoperative Pain	19
Pain, Postoperative	16
Analgesia	14

Condition MeSH

Condition MeSH for Morphine Sulfate
Intervention	Trials
Pain, Postoperative	44
Cancer Pain	12
Acute Pain	11
Syndrome	9

Clinical Trial Locations for Morphine Sulfate

Trials by Country

Trials by Country for Morphine Sulfate
Location	Trials
United States	276
Egypt	32
Canada	11
France	10
Brazil	7

Trials by US State

Trials by US State for Morphine Sulfate
Location	Trials
Texas	25
New York	19
California	18
Ohio	14
Florida	14

Clinical Trial Progress for Morphine Sulfate

Clinical Trial Phase

Clinical Trial Phase for Morphine Sulfate
Clinical Trial Phase	Trials
PHASE4	6
PHASE2	1
PHASE1	1

Clinical Trial Status

Clinical Trial Status for Morphine Sulfate
Clinical Trial Phase	Trials
Completed	104
Recruiting	29
Unknown status	22

Clinical Trial Sponsors for Morphine Sulfate

Sponsor Name

Sponsor Name for Morphine Sulfate
Sponsor	Trials
Assiut University	9
Pfizer	8
Fayoum University Hospital	7

Sponsor Type

Sponsor Type for Morphine Sulfate
Sponsor	Trials
Other	193
Industry	63
NIH	10

Last updated: May 21, 2026

Morphine Sulfate Clinical Trials Update, Market Analysis, and Launch Projections

Morphine sulfate is a long-established opioid analgesic with entrenched generic availability. Clinical trial activity centers on formulations designed to improve safety, reduce abuse liability, and address special populations. In the US, market exclusivity is driven less by brand-like patent estates and more by product-specific barriers: formulation IP, FDA approvals for specific dosing forms, and any remaining label-protection and exclusivity tied to non-generic entrants. Commercial upside and generic entry timing are dominated by supply chain economics, payer behavior, and regulatory constraints on opioid prescribing rather than by broad patent exclusivity.

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What clinical trials are running for morphine sulfate in 2025 (and what do they test)?

Morphine sulfate trials in 2025 focus on three buckets: (1) extended-release or abuse-deterrent reformulations, (2) pediatric and other special-population studies aligned with dosing refinement, and (3) formulation performance or route-of-administration comparisons intended to support labeling updates or new strength/dosage-form approvals.

Abuse-deterrent and misuse-limiting formulation studies

Expected trial endpoints include extraction resistance, tamper resistance, pharmacokinetics under manipulated conditions, and clinical assessments of euphoria-related effects using validated abuse-liability measures. When morphine sulfate is the active, sponsors often pursue differentiation through physicochemical mechanisms or delivery system design rather than a new molecular entity.

Pharmacokinetic and bioequivalence studies supporting new strengths or generics

A large fraction of “morphine sulfate trials” indexed in public registries are not efficacy trials but PK and BE studies designed to support generic approvals, labeling expansions, or formulation bridging (food-effect, dose proportionality, different salt forms or release characteristics).

Special-population studies

High-intent study areas typically include:

• Pediatrics: dose-ranging and safety in age cohorts, with attention to respiratory depression risk
• Renal/hepatic impairment: exposure characterization where morphine metabolites accumulate
• Elderly: tolerability and exposure in geriatric pharmacology profiles

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How many morphine sulfate clinical trials are active, and where are they concentrated?

Active trials are usually concentrated in North America and parts of Europe due to site infrastructure for opioid studies and regulatory capacity for BE/bridging protocols. Registry counts fluctuate week to week because PK studies start and end quickly. Without a live registry pull in this environment, a complete quantified count cannot be produced accurately.

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Which morphine sulfate clinical trial endpoints matter for regulatory and payer decisions?

For morphine sulfate, endpoints that drive decisions are largely regulatory and product-performance oriented.

Regulatory endpoints commonly used

• Cmax and AUC bioequivalence against a reference listed drug
• Food-effect comparisons for oral products
• Time to peak (Tmax) and release profile consistency for extended-release products
• Safety endpoints dominated by treatment-emergent adverse events, especially sedation and respiratory depression signals

Abuse-liability endpoints used in abuse-deterrent development

• Human abuse potential studies under tampering conditions
• Manipulated dose-response and liking scores
• Pharmacokinetic comparisons after extraction or dose manipulation

Labeling endpoints tied to special populations

• Exposure and tolerability in pediatrics, geriatrics, and organ impairment groups
• Comparative safety narratives aligned with existing opioid safety frameworks

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What is the market for morphine sulfate (US and major ex-US markets), and how is it changing?

Morphine sulfate is a mature opioid analgesic with broad generic coverage. Market structure is shaped by:

• Generic erosion of branded price points where any branded entrant exists historically
• Payer formulary management and utilization controls
• Risk mitigation requirements for opioids, including prescriber and patient risk strategies
• Ongoing migration toward alternative opioid therapies and non-opioid adjuncts in some payer programs

Commercial demand drivers

• Chronic pain and cancer pain prevalence
• Institutional use in hospitals and oncology settings
• Uptake patterns for extended-release vs immediate-release formulations
• Switching due to safety concerns or formulary restrictions

Commercial headwinds

• Enhanced opioid prescribing scrutiny and guideline adherence requirements
• Buprenorphine and other opioid alternatives gaining share in some segments
• Safety communications affecting prescriber behavior
• Litigation and compliance costs embedded across the opioid category

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How big is the morphine sulfate opportunity for new formulation entrants?

The opportunity is concentrated in incremental differentiation: extended-release performance, reduced abuse-deterrence, and dosing form expansions. The core molecule has no novelty, so the “new entrant” business case depends on:

• Achieving an FDA-accepted reference product for BE and labeling alignment
• Establishing patent protection around the specific dosage form, release mechanism, or manufacturing process
• Securing favorable reimbursement and formulary placement for the specific NDC(s) in question

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What patents protect morphine sulfate formulations in 2025, and how strong is the estate?

For morphine sulfate as an API, the foundational composition and salt coverage is longstanding. The enforceable IP tends to sit in:

• Extended-release matrix compositions
• Coating systems and release modifiers
• Manufacturing process claims
• Abuse-deterrent technology claims
• Specific strength ranges or product design features

A complete, defensible “how many patents” and “which patents” inventory cannot be produced without an Orange Book/IP dataset pull for the exact morphine sulfate dosage forms and strengths in scope.

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When does morphine sulfate lose exclusivity, and what actually blocks generics?

Because morphine sulfate is largely off-patent for the API, exclusivity is usually fragmented and product-specific. Real blockers for a generic are typically:

• Formulation patent claims still in force for a specific extended-release product
• Orange Book-listed patents tied to a particular reference listed drug (RLD)
• Regulatory exclusivity still applicable to certain NDA/505(b)(2) products, if any (rare for long-established APIs)
• Patent-protected manufacturing steps that create design-around difficulty

Without enumerating the exact RLD(s) and corresponding Orange Book entries, a precise exclusivity timeline cannot be stated.

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What patent litigation affects morphine sulfate generics and branded products?

Morphine sulfate is in the opioid category with broad litigation history at the class level, but product-specific patent litigation for morphine sulfate depends on the RLD-specific patent estate. In practice, the generic risk analysis hinges on:

• Whether Orange Book patents are listed for a given dosage form and strength
• Whether any Paragraph IV challenges exist in the relevant filing cohort
• Whether any settlements trigger “design-around” or delayed launch dates

A complete litigation map cannot be produced in this environment without a current Orange Book and court dockets dataset keyed to particular RLDs.

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What is the Orange Book status of morphine sulfate (RLDs, listed patents, and NDA types)?

Orange Book status is dosage form and reference product specific. Morphine sulfate exists across multiple NDA types (classic generics, 505(b)(2) variants historically, and line extensions). Without a direct Orange Book query and citation capture for the RLD set, any “status table” would risk being inaccurate.

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Are there biosimilar risks for morphine sulfate?

No. Morphine sulfate is a small molecule opioid and is not within the biologics license application framework. Biosimilar pathway risk is not applicable.

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How does morphine sulfate compare with other oral opioids (oxycodone, hydromorphone, tramadol) on market outlook?

Morphine sulfate’s differentiator is formulary familiarity, cost competitiveness for generics, and entrenched clinical positioning for specific pain types. Outlook depends on category-level opioid utilization and payer controls:

• If payers tighten opioid totals, utilization may compress across all oral opioids.
• If payers prefer cost containment, generic morphine may hold share better than higher-cost alternatives.
• Abuse-deterrent and safety-focused policies can shift demand toward specific protected formulations when available.

A product-by-product forecast requires dose-form granularity (IR vs ER), geography, and current payer preferred drug lists.

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What generic entry risks exist for morphine sulfate extended-release products?

Generic entry risk is mostly tied to:

• Remaining formulation/process patents on extended-release products
• Any active FDA stays or court injunctions resulting from paragraph IV disputes
• Practical manufacturing barriers for abuse-deterrent or tight release specifications

For morphine sulfate, these risks are not uniform across all dosage forms. IR generics generally have fewer remaining IP barriers than protected ER systems.

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Market projection for morphine sulfate (2025–2035): base, bull, and bear scenarios

Because morphine sulfate is already widely generic, projections should be framed as utilization and unit economics rather than “new market creation.” Forecast ranges depend on opioid policy and competitive substitution patterns. Without a live market sizing source and payer-level trend inputs, a quantified forecast cannot be responsibly produced.

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Commercial strategy implications: where future growth is most likely

Growth is most likely in narrow areas:

• Extended-release or abuse-deterrent formulations where product-specific IP supports premium positioning
• Institutional and oncology settings where clinicians use standardized titration and conversion protocols
• Pediatric dosing forms where label expansions can unlock additional prescribing

For most generic producers, the strategy is less about differentiation and more about supply stability, compliance, and manufacturing cost competitiveness.

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Key Takeaways

• Morphine sulfate clinical activity in 2025 is dominated by formulation, PK/BE, and special-population studies rather than new efficacy paradigms.
• Market is mature and generic-driven; exclusivity is product-specific and typically tied to formulation or manufacturing IP, not to the API.
• Biosimilar risk does not apply.
• Forecasting requires dose-form and RLD granularity; without it, quantified 2025–2035 scenarios would be unreliable.

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FAQs

1. What are the most common morphine sulfate clinical trial designs (PK, BE, abuse-liability)?
2. Which morphine sulfate dosage forms (IR vs ER) face the most formulation-IP barriers to generic entry?
3. How do opioid prescribing restrictions impact utilization of morphine sulfate in US formularies?
4. What endpoints are used to demonstrate abuse-deterrent performance for extended-release morphine sulfate products?
5. How does morphine sulfate pricing evolve in the US once multiple generic NDCs enter?

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References (APA)

1. U.S. Food and Drug Administration. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations.
2. ClinicalTrials.gov. Morphine sulfate clinical trials registry records.
3. U.S. Food and Drug Administration. Drug Approval Reports and labeling databases for morphine sulfate products.