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Does Oral Micronized Progesterone Shorten Time of Symptoms From Concussion

Micronized Oral Progesterone and Effect on Time Symptomatic From Concussion: A Pilot Study

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01809639
Enrollment
25
Registered
2013-03-13
Start date
2013-06-30
Completion date
2015-12-31
Last updated
2018-08-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Concussion

Keywords

Concussion

Brief summary

Concussions are a common injury among athletes in the United States. The annual incidence of sports and recreational related traumatic brain injuries in the United States is 1.6 to 3.8 million, and the likelihood of an athlete in a contact sport experiencing a concussion is as high as 20 percent per season. Even mild traumatic brain injury, including concussion, can cause long-term cognitive problems that affect a person's ability to perform daily activities and to return to school or work. Far more concerning is the mounting body of evidence that concussions are not just transient injuries - but have cumulative effects. It has been well established in animal models that progesterone has neuroprotective benefits. Animal studies using progesterone for acute post-injury treatment have demonstrated reduced cerebral edema, reduced neuro-inflammatory markers, decreased neuronal loss, and improved behavioral outcomes. To date, there have been no studies to assess whether or not progesterone will be effective for the treatment of concussions. This double-blind placebo controlled trial will assess the ability of 5 days of oral micronized progesterone (Prometrium®) to shorten the duration of symptoms of an athlete diagnosed with concussion. The investigators hypothesize that athletes treated with progesterone will have faster resolution of their concussive symptoms. The investigators believe this study may be the first clinical trial to show an effective treatment for concussion.

Interventions

DRUGProgesterone
DRUGPlacebo

Standard placebo

Sponsors

American Medical Society for Sports Medicine (AMSSM) Foundation
CollaboratorUNKNOWN
Wake Forest University Health Sciences
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 44 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosed with a concussion * A 18 years or older * Diagnosis \< 24 hours from injury * Consent obtained prior to concussion

Exclusion criteria

* Pregnant * Active breast or reproductive organ cancers * Allergy to peanuts * History of or current thrombophlebitis or venous thromboembolic disorder * Females taking birth control * Known hypersensitivity or prior adverse reaction to progesterone * Known liver disease

Design outcomes

Primary

MeasureTime frameDescription
Time (in Days) That a Patient Reports Symptoms From Their Concussion.From date of injury until date asymptomatic, assessed up to 24 monthsThe total time that a patient reports symptoms will be assessed. Once the patient reports that they are asymptomatic, the patient will repeat the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) test to determine if the patient's score has returned to baseline.

Countries

United States

Participant flow

Participants by arm

ArmCount
Progesterone
400mg of oral micronized progesterone (Prometrium®) on days one, two, and three then 200mg on days four and five Progesterone
18
Placebo
Placebo: Standard placebo for 5 days
7
Total25

Baseline characteristics

CharacteristicProgesteronePlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
18 Participants7 Participants25 Participants
Sex: Female, Male
Female
0 Participants2 Participants2 Participants
Sex: Female, Male
Male
18 Participants5 Participants23 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
0 / 180 / 7
serious
Total, serious adverse events
0 / 180 / 7

Outcome results

Primary

Time (in Days) That a Patient Reports Symptoms From Their Concussion.

The total time that a patient reports symptoms will be assessed. Once the patient reports that they are asymptomatic, the patient will repeat the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) test to determine if the patient's score has returned to baseline.

Time frame: From date of injury until date asymptomatic, assessed up to 24 months

ArmMeasureValue (MEAN)Dispersion
ProgesteroneTime (in Days) That a Patient Reports Symptoms From Their Concussion.7.3 Days SymptomaticStandard Error 8.64
PlaceboTime (in Days) That a Patient Reports Symptoms From Their Concussion.4.5 Days SymptomaticStandard Error 1.97
p-value: 0.42ANOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026