Clinical Trials

Cyproheptadine hydrochloride sesquihydrate has been evaluated in numerous clinical trials spanning Early Phase 1 through Phase 4 for indications including alcohol use disorder, COVID-19 pneumonia, pediatric feeding disorders, nausea, and muscle spasticity. Sponsored by both industry entities and academic research centers, these studies assess outcomes ranging from pharmacokinetic profiles and therapeutic efficacy to pediatric eating habits. Across the trial portfolio, recruitment statuses encompass completed, active, recruiting, terminated, and unknown states.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT04488081 ACTIVE_NOT_RECRUITING
COVID-19
QuantumLeap Healthcare Collaborative
2020-07-31 PHASE2
NCT05469165 RECRUITING
Ischemic Mitral Regurgitation
Laval University
2023-06-20 PHASE2
NCT06751290 COMPLETED
Pediatric Feeding Disorder, Chronic; Avoidant Restrictive Food Intake Disorder
University of Miami
2024-12-30 PHASE4
NCT06175273 COMPLETED
Pediatric Cancer; Nutrition Related Cancer; Nutrition Aspect of Cancer; Muscle Loss; Malnutrition, Child
Corey Hawes
2024-01-31 PHASE2; PHASE3
NCT07006181 COMPLETED
Appetite Loss
Indonesia University
2024-11-04
NCT06147622 COMPLETED
Alcohol Use Disorder
Kinnov Therapeutics
2024-04-23 PHASE1
NCT05087381 COMPLETED
Treatment Efficacy
Chulalongkorn University
2021-10-01 PHASE4
NCT04979221 UNKNOWN
COVID-19 Pneumonia
Hospital de Clinicas de Porto Alegre
2021-07-26 PHASE3
NCT04876573 UNKNOWN
Viral Pneumonia; COVID-19 Pneumonia; Serotonin Syndrome; Platelet Dysfunction
Ciusss de L'Est de l'Île de Montréal
2021-06-01 PHASE2
NCT04820751 UNKNOWN
Viral Pneumonia; Serotonin Syndrome; Platelet Dysfunction
Ciusss de L'Est de l'Île de Montréal
2021-04-10 PHASE3
NCT04108104 COMPLETED
Alcohol Use Disorder
Kinnov Therapeutics
2019-11-30 PHASE2
NCT03593811 COMPLETED
Nausea
Vanderbilt University Medical Center
2018-08-03 EARLY_PHASE1
NCT02418949 COMPLETED
Stroke; Muscle Spasticity; Hemiparesis
Shirley Ryan AbilityLab
2015-11
NCT02568007 TERMINATED
Feeding Behaviors
Medical College of Wisconsin
2015-12 PHASE4
NCT01538693 COMPLETED
Spinal Cord Injury
T. George Hornby
2011-12
NCT01688570 COMPLETED
Stroke
Medical College of Wisconsin
2011-08 EARLY_PHASE1
NCT01940978 COMPLETED
ADHD; Attention Deficit Hyperactivity Disorder; Attention Deficit Disorder With Hyperactivity; Mental Disorders Diagnosed in Childhood; Attention Deficit and Disruptive Behavior Disorders
Douglas Sears
2014-03 PHASE4
NCT01132547 TERMINATED
Cancer
University of South Florida
2010-06 PHASE3
NCT01675050 TERMINATED
Functional Abdominal Pain
University of Michigan
2012-08 PHASE2
NCT00949117 TERMINATED
Leukemia; Lymphoma; Malnutrition; Myelodysplastic Syndromes; Unspecified Childhood Solid Tumor, Protocol Specific; Weight Changes
University of South Florida
2009-09 PHASE2
NCT01314989 UNKNOWN
Failure to Thrive
St. Justine's Hospital
2010-12 PHASE4
NCT01076283 COMPLETED
Alcoholism
Brown University
2009-12 PHASE2
NCT00066248 COMPLETED
Brain Tumor; Central Nervous System Tumors; Cachexia; Leukemia; Lymphoma; Myelodysplastic Syndromes; Myelodysplastic/Myeloproliferative Diseases; Unspecified Childhood Solid Tumor, Protocol Specific
University of South Florida
2003-06 PHASE2

(data from https://clinicaltrials.gov, updated on 2026-03-16)

Check the Cyproheptadine hydrochloride sesquihydrate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Cyproheptadine hydrochloride sesquihydrate acts as a potent non-selective 5-HT2 receptor antagonist with an IC50 of 0.6 nM and an inhibitor of the histone methyltransferase SETD7/9, thereby blocking downstream serotonergic signaling cascades and epigenetic chromatin modifications to modulate cellular signaling and neuroendocrine pathways. This inhibition attenuates serotonin-mediated smooth muscle contraction and central appetite suppression, providing the mechanistic basis for its clinical investigation in pediatric feeding disorders, nausea, alcohol use disorder, and muscle spasticity.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.