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epinephrine

Phase 2

Urticaria Chronic | Small molecule | Dermatology |ARS Pharmaceuticals, Inc.|Last Updated: Jul 22, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment42

FDA Designations

No designations recorded

Clinical trial landscape

epinephrine · 1 trial · 1 indication

Phase 2 1
NCT06927999An Outpatient Study of the Efficacy of ARS-2 in Patients With Chronic Spontaneous UrticariaUrticaria Chronic
RECRUITING42 Analytics
PHASE2RECRUITING
An Outpatient Study of the Efficacy of ARS-2 in Patients With Chronic Spontaneous Urticaria
Urticaria ChronicUnlock trial analytics

Study Endpoints

Primary Endpoints

Determine the effect of ARS-2 (0.5 mg or 1 mg) versus placebo on itch and hive
12 months

Change in itch and hive scores (Uniform Assessment System) \[UAS\] as compared to placebo at each timepoint on exacerbation days

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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATORPlacebo solution nasal spray containing no active drug will be administered using the commercial sprayer device.
0.5 mgACTIVE_COMPARATOR0.5 mg epinephrine per spray
1 mgACTIVE_COMPARATOR1 mg epinephrine per spray

Interventions

NameTypeDescription
PlaceboDRUGPlacebo solution nasal spray containing no active drug
0.5 mg epinephrineDRUG0.5 mg epinephrine per spray
1 mg epinephrineDRUG1 mg epinephrine per spray
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: * Is a male or female between the ages of 18 and 65 years, inclusive. * Has been clinically diagnosed with CSU and experiences an acute flare of moderate to severe urticaria symptoms (itch and hive severity UAS score ≥ 2) approximately 1-2 times a month or every other month cons...

Countries:United StatesGermany
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Recent Changes (Last 90 Days)

MEDIUMJul 22, 2026NCT06927999primaryCompletionDate: changed
MEDIUMJul 22, 2026NCT06927999primaryCompletionDate: changed
LOWMay 26, 2026NCT06927999primaryCompletionDate: changed
LOWMay 24, 2026NCT06927999studyFirstPostDate: changed

Frequently asked questions about epinephrine

What is epinephrine used for in urticaria chronic?

Epinephrine is being studied for the treatment of chronic spontaneous urticaria, a condition characterized by recurrent hives. It is administered as a 0.5 mg dose and is currently in Phase 2 clinical development. The drug is being evaluated in an outpatient study to assess its efficacy in patients with this condition.

What does epinephrine target?

Epinephrine is a small molecule that acts as a non-selective agonist of alpha and beta adrenergic receptors. In the context of chronic urticaria, it is believed to work by causing vasoconstriction and reducing vascular permeability, which may help alleviate the symptoms of hives. However, the exact mechanism in this indication is still under investigation.

Who makes epinephrine?

Epinephrine is being developed by ARS Pharmaceuticals, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol SPRY. The company is conducting clinical trials to evaluate the drug's efficacy in patients with chronic spontaneous urticaria.

What phase is epinephrine in?

Epinephrine is currently in Phase 2 clinical development for the treatment of chronic urticaria. It is an investigational drug and has not yet been approved by regulatory authorities. The ongoing Phase 2 trial is recruiting participants to evaluate the drug's efficacy and safety in this patient population.

What clinical trials is epinephrine in?

Epinephrine is being studied in a Phase 2 clinical trial with the identifier NCT06927999. The trial, titled 'An Outpatient Study of the Efficacy of ARS-2 in Patients With Chronic Spontaneous Urticaria,' is recruiting participants in the United States and Germany. The study is randomized, double-blind, and placebo-controlled, with an enrollment target of 42 patients aged 18 years and older.

Is epinephrine the same as 0.5 mg epinephrine?

Yes, epinephrine is also known as 0.5 mg epinephrine, referring to the specific dose being studied in the clinical trial. The drug is being evaluated at this dose in patients with chronic spontaneous urticaria. This naming convention helps distinguish the specific formulation and dosage used in the ongoing Phase 2 study.