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Safety and Efficacy of Merlin (Ethanol and Glycolic Acid Mixture) for the Treatment of Cold Sores

A Multicenter, Placebo-Controlled, Randomized, Double-Blind Study of the Safety and Efficacy of Merlin (Ethanol and Glycolic Acid Mixture) for the Episodic Treatment of Recurrent Herpes Labialis

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01985321
Enrollment
469
Registered
2013-11-15
Start date
2013-11-30
Completion date
2014-07-31
Last updated
2015-07-16

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

Conditions

Recurrent Herpes Labialis

Keywords

herpes labialis, cold sore

Brief summary

The purpose of this study is to determine if Merlin, a mixture of ethanol and glycolic acid, is safe and effective in the treatment of cold sores. Subjects who meet the requirements to participate in the study will be put randomly, and equally, into one of two groups: 1) a group receiving Merlin to treat their cold sore; or 2)a group receiving a placebo of just ethanol to treat their cold sore. Neither the subject nor the site will know which treatment they will be getting. Once the subject has been assigned to a treatment group, they will be given a kit containing a bottle of the treatment and special swabs to apply the liquid. The subject will be told to take the kit home and wait until they think they are starting to get a cold sore. Once a subject begins to feel something or see something that they think is the start of a cold sore, they are to immediately call the clinic. Once the clinic confirms that the subject is in fact starting to get a cold sore, the subject will be told to open the kit and begin treatment. From the start of treatment, there will be twelve (12) treatments, with either Merlin or placebo, applied six (6) hours apart, up to 3 per day, over the next 96 hours (4 days). Each treatment of Merlin or placebo is made up of three (3) applications given twenty (20) minutes apart, for a total of thirty-six (36) applications. FOr each application, the subject will use the special swab to put the Merlin or placebo solution on their cold sore. Subjects will need to report daily to the clinic for a minimum of 3 consecutive days, until either the cold sore is completely healed or 14 days from the start of treatment, whichever comes first. At each clinic visit the cold sore will be observed to determine at what stage it is at or if it has healed. The subject will also be asked how they are feeling. Subjects will also be told to record in a diary the time of each application of Merlin or placebo. They will also be asked to record how much pain, if any, related to the cold sore, that they are feeling.

Interventions

DRUGethanol/glycolic acid solution

ethanol/glycolic acid solution

DRUGPlacebo/Ethanol

ethanol solution

Sponsors

Benu BioPharma, LLC
CollaboratorINDUSTRY
Topical Remedy
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Male or female subject 18-75 years of age * Female subjects must be using a medically acceptable form of birth control during the study. Acceptable birth control measures include, but are not limited to: abstinence, oral contraceptive pills or patch, injectable contraception, barrier contraceptives (condom, diaphragm with spermicide), IUD, vaginal contraceptive ring, surgical (hysterectomy, tubal ligation), vasectomized partner, and natural post-menopausal inability to conceive. Menopause is defined for this protocol as starting one year after the time of the last menstrual period. * Subject must have a history of recurrent herpes labialis and report at least 3 separate recurrences (i.e. multiple herpetic lesions in one outbreak count as only one episode) during the preceding 12 months. * Subject must have a history of experiencing prodromal symptoms of cold sores (e.g. itching, tingling, or burning) during at least half of their previous cold sore episodes. * Subject must have a history of at least half of their cold sore episodes producing classical lesions (i.e., episodes that progressed through macule, papule, vesicle, crust, and healed). * Subject must provide voluntary written informed consent to participate in this study. * Subject is able to appear for a clinic visit within 24 hours from the time of treating cold sore and is able to return to the clinic for the full 14 day duration of the study if necessary.

Exclusion criteria

* Subjects with evidence of active malignancy or immunodeficiency disease within the last 30 days. Subjects who have completed therapy and are considered unlikely to relapse or who have had surgery and do not have any evidence of disease, are eligible for the study. * Subject requires chronic use of immunomodifying drugs (e.g. systemic steroids) or topical steroids on or near the face; use of inhaled steroids does not exclude a subject from the study. If a subject is unlikely to get through the Treatment Phase of the protocol without requiring the use of an immunomodifying drug for a chronic condition the subject should be excluded. * Subject requires chronic use of anti-viral medication. * In females of childbearing potential, a positive urine pregnancy test at time of screening. * Nursing mothers. * Subject has abnormal skin conditions (e.g. acne, eczema, rosacea, psoriasis, albinism, or chronic vesiculobullous disorders) that occur in the area ordinarily affected by cold sores or has significant facial hair in the area of the cold sore that might affect the normal course of the cold sore or might impair accurate evaluation of the cold sore lesion. * Subject has had a vaccine for herpes simplex virus type 1 (typically oral herpes) or 2 (typically genital herpes). * Subject is currently enrolled in another clinical trial involving the use of a drug and/or a device. * Subject requires chronic use of analgesics or non-steroidal anti-inflammatory agents (NSAIDs) except for low doses of aspirin (less than 325 mg/day) used for cardiovascular purposes. If a subject is unlikely to get through the Treatment Phase of the protocol without requiring the use of analgesia for a chronic condition, e.g. back pain, recurrent daily headaches, the subject should be excluded.

Design outcomes

Primary

MeasureTime frame
Clinician Assessed Duration of Complete Healing of the Herpetic EpisodeDays 1-14

Secondary

MeasureTime frame
Number of Treatment Related Adverse EventsDays 1-28

Countries

United States

Participant flow

Recruitment details

Subjects were recruited from the start of the study in November of 2013 until the completion of the study in March 2014. There were 8 Investigators at 8 clinical sites.

Pre-assignment details

There were no notable events or approaches for the study following enrollment, but prior to group assignment. Once subjects were found to meet the eligibility requirements at the screening/randomization visit they were randomized 1:1 into the active or placebo treatment groups.

Participants by arm

ArmCount
Merlin - Ethanol/Glycolic Acid Solution
36 applications over a 96 hour period ethanol/glycolic acid solution: ethanol/glycolic acid solution
89
Ethanol
36 applications over a 96 hour period
83
Total172

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up52
Overall StudyProtocol Violation43
Overall StudySubject treated wrong type of sore10
Overall StudyWithdrawal by Subject10

Baseline characteristics

CharacteristicMerlin - Ethanol/Glycolic Acid SolutionEthanolTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
16 Participants9 Participants25 Participants
Age, Categorical
Between 18 and 65 years
73 Participants74 Participants147 Participants
Age, Continuous48.1 Years
STANDARD_DEVIATION 15.54
48.6 Years
STANDARD_DEVIATION 14.63
48.4 Years
STANDARD_DEVIATION 19
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants5 Participants10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
84 Participants78 Participants162 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 participants2 participants2 participants
Race (NIH/OMB)
Asian
0 participants2 participants2 participants
Race (NIH/OMB)
Black or African American
18 participants15 participants33 participants
Race (NIH/OMB)
More than one race
0 participants0 participants0 participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 participants0 participants0 participants
Race (NIH/OMB)
Unknown or Not Reported
0 participants0 participants0 participants
Race (NIH/OMB)
White
71 participants68 participants139 participants
Region of Enrollment
United States
89 participants83 participants172 participants
Sex: Female, Male
Female
63 Participants55 Participants118 Participants
Sex: Female, Male
Male
26 Participants28 Participants54 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
9 / 903 / 83
serious
Total, serious adverse events
0 / 900 / 83

Outcome results

Primary

Clinician Assessed Duration of Complete Healing of the Herpetic Episode

Time frame: Days 1-14

Population: Modified Intent to Treat Population: 2 subjects in placebo group violated protocol and could not be evaluated for Complete Healing (83-2=81). 5 subjects in active group started treatment prior to contacting site; 1 subject in active group lost to follow-up with no site visits. These 6 active subjects not used in Complete Healing analysis (90-6=84)

ArmMeasureValue (MEDIAN)
Merlin - Ethanol/Glycolic Acid SolutionClinician Assessed Duration of Complete Healing of the Herpetic Episode129.6 hours
EthanolClinician Assessed Duration of Complete Healing of the Herpetic Episode154.6 hours
Secondary

Number of Treatment Related Adverse Events

Time frame: Days 1-28

ArmMeasureValue (NUMBER)
Merlin - Ethanol/Glycolic Acid SolutionNumber of Treatment Related Adverse Events9 participants
EthanolNumber of Treatment Related Adverse Events3 participants

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