Condition category
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting
Publication status

Plain English Summary

Background and study aims
Upper respiratory tract infection (common cold) is one of most widespread diseases worldwide; however, no effective therapy for this condition has been developed so far.
Aim of this study was to test the hypothesis that treatment with nasal spray containing carrageenan was superior to placebo (saline solution) nasal spray in children with common cold.

Who can participate?
Patients could participate if they were of age of 1 to 18 years (inclusive) and had early (up to 36 hours duration) symptoms of common cold.

What does the study involve?
All participants that met inclusion criteria received either nasal spray containing carrageenan or saline solution nasal spray which was to be used 3 times daily during one week. Afterwards all participants had to be followed up till day 21 after inclusion. During whole study period all patients (or their parents) had to keep a diary recording either intensity of 8 symptoms ((headache, muscle ache, chilliness, sore throat, blocked nose, runny nose, cough and sneezing) using a 4-point scale (during first 9 days) or answering a question whether they had any symptoms of common cold (during days 8-21). Additionally, at Visit 1 (day 1) and 2 (days 3-4) nasal fluid was collected. After study end duration of disease, intensity of symptoms over time and viral load in nasal fluid was compared in groups receiving carrageenan spray treatment and placebo.

What are the possible benefits and risks of participating?
There was no immediate benefit for study participants; however, there was possible future benefit for society resulting from development new safe and effective therapy for common cold.
No significant risks were anticipated.

Where is the study run from?
St. Anna Children´s Hospital (Vienna, Austria)

When is study starting and how long is it expected to run for?
This study was running from 2st January, 2009 (initiation) till 23 December, 2009 (close-out).

Who is funding the study?
Marinomed Biotechnologie GmbH, Vienna, Austria

Who is main contact?
Dr Tamas Fazekas

Trial website

Contact information



Primary contact

Dr Tamas Fazekas


Contact details

St. Anna Children’s Hospital
Kinderspitalgasse 6

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

Prevention and therapy of virally induced respiratory disease in children using nasal sprays containing carrageenan


Study hypothesis

1. To evaluate the effect of the nasal spray on the severity of common cold symptoms compared to placebo treatment
2. To evaluate the effect of the nasal spray compared to placebo treatment with respect to symptom-free days during the observation period of 21 days
3. To investigate the effects of the nasal spray on the presence of biomarkers and common cold viruses in nasally secreted fluid samples

Ethics approval

Ethics Committee of the St. Anna Children´s Hospital, 19 January, 2009

Study design

Randomised double-blind two-centre parallel group placebo-controlled study

Primary study design


Secondary study design

Randomised controlled trial

Trial setting


Trial type


Patient information sheet

Not available in web format, please contact Marinomed Biotechnologie GmbH ( to request a patient information sheet


Early symptoms of upper respiratory tract infection (URTI) in children


Coldamaris prophylactic gel nasal spray versus matching placebo (saline solution) nasal spray, 3 times a day for 7 days

Intervention type



Not Applicable

Drug names

Coldamaris (carrageenan)

Primary outcome measure

The primary efficacy variable was the total symptom score (TSS) (sum of 8 symptoms), mean of study days 2-7.
Definition of TSS:
Sum of 8 individual symptom scores (headache, muscle ache, chilliness, sore throat, blocked nose, runny nose, cough and sneezing) was assessed on a 4-point scale (0 = none up to 3 = severe symptoms).
Maximum score for TSS was 24 for each time point of registration. For statistical analysis, the TSS scores of study days 2-7 were summarized per patient, and an individual mean was calculated.

Secondary outcome measures

Secondary efficacy variables:
1. TSS on separate study days
2. Total systemic symptom scores (TSSsys: headache, muscle ache, chilliness) mean of study days 2-4, and on separate study days
3. Local symptom scores (TSSloc: sore throat, blocked nose, runny nose, cough, and sneezing) mean of study days 2-4 and on separate study days
4. Individual symptom scores (ISS: headache, muscle ache, chilliness, sore throat, blocked nose, runny nose, cough and sneezing) on separate study days
5. Number of days without symptoms during the observation period.
6. Consumption of medication (additional to study treatment).

Exploratory efficacy variables:
1. Subjects opinion of the study product was assessed using a VAS scale (0-10). Units: cm. 0 = poor, 10 = excellent
2. Subjects willingness to use the product in the future, was assessed using an ordinal scale: Strongly agree/Agree/Disagree/Strongly disagree

Nasal secreted fluid:
To investigate the effects of the nasal spray on the presence of biomarkers and common cold viruses in nasal secreted fluid samples, the following efficacy variables were used:
1. Identification and quantification of virus: Influenza virus type A and B, Respiratory Syncytial Virus type, Parainfluenza type 1-3, Rhinovirus (major and minor group viruses), Human Metapneumovirus, as well as either Corona virus type OC43, or Corona virus type 229E.
2. Determination of the concentration of cytokines using a Multiplex array:
EGF, Eotaxin, FGF-3, Flt-3 Ligand, Fractalkine, G-CSF, GM-CSF, GRO, IFN-gamma, IFN-alpha-2, IL-10, IL-12 p40, IL-12p70, IL-13, IL-15, IL-17, IL-1-alpha, IL-1-beta, IL-1-receptor antagonist, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IP-10, MCP-1, MCP-3, MDC, MIP-1-alpha, MIP-1-beta, CD40-ligand, sIL-2 receptor alpha, TGF alpha, TNF-alpha, TNF-beta, VEGF

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

1. Age < 18 years
2. Age > 1 years
3. Parents had given informed consent, and received a copy of signed consent form prior to any study related procedures
4. Symptoms of Upper Respiratory Tract Infection (URTI), such as rhinitis/nasal obstruction/sneezing or cough or sore throat or otitis
5. Subjects or their parents considered that the subjects were in an early stage of a common cold with symptoms no more than 36 hours duration
6. Subjects had a symptom score of at least 1 and no more than 9 of sum of severity scores on entry to the study. The score was calculated by summing 8 symptom scores (headache, muscle ache, chilliness, sore throat, nasal obstruction, nasal discharge, cough, and sneezing) with each item rated 0 = absent, 1 = mild, 2 = moderate, 3 = severe
7. Subjects or their parents agreed to refrain from taking any products intended to prevent, intervene in, or treat cough/colds/flu, starting at study entry and continuing through day 7
8. The following were specifically disallowed:
8.1. Antihistamines, decongestants, antitussives, combination cold products, antivirals, oral or nasal steroids, all nasal sprays, any cold-directed herbal treatment (e.g. andrographis, echinacea, garlic, ginger, ginseng, pelargonium, propolis), and any supplement or lozenge containing ≥ 10 mg zinc or ≥ 100mg vitamin C).
8.2. Eating food cooked with garlic or ginger was allowed. Use of a daily multivitamin was allowed.
8.3. Analgesics, especially nonsteroidal anti-inflammatory drugs, were discouraged. Subjects with pain requiring medication were requested to use acetaminophen (paracetamol) and to record such use for consideration in statistical analysis.

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. No informed consent
2. Known hypersensitivity or allergy to any component of the test product
3. Severe cardiovascular, endocrinological, neurological, respiratory, gastrointestinal disease or a history or any current disease that was considered by the investigator as a reason for exclusion
4. Severe nasal septal deviation or other noninfectious condition that could have caused nasal obstruction
5. A history of any nasal or sinus surgery in the past that in the opinion of the investigator had might influenced symptom scores
6. Current medication other than oral contraception, that was considered by the investigator as a reason for exclusion e.g. systemic steroids or intranasal medication
7. Recent treatment of common cold that in the opinion of the investigator might influence symptom scores (e.g. antihistamines, decongestants, antitussives, combination cold products, antiviral, steroids, all nasal sprays, any cold-directed herbal treatment, and any supplement or lozenge containing ≥ 10 mg zinc or ≥ 100 mg vitamin C)
8. An unrelated infection that in the opinion of the investigator might influence the symptom scores (gastrointestinal infection, other viral diseases such as measles, mumps)
9. The subject was related to any study personnel, or had any other close ties or conflicts of interest with the research team or the study sponsor
10. The subject had received any investigational drug or had participated in a clinical trial within 4 weeks of entry to this study
11. The subject had a clinically significant disease that could have interfered with participation in the study, with the intervention being studied, or with the evaluation of symptoms. Specific exclusions included immune deficiency, autoimmune disease, and substantive cardiovascular, endocrinological, neurological, respiratory, or gastrointestinal disease. A history of allergic rhinitis with current eye or nose itching or sneezing, chronic obstructive pulmonary disease with current cough will also be exclusions. A symptomatic disease such as elevated blood pressure or cholesterol had not to be a reason for exclusion.

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

St. Anna Children’s Hospital

Sponsor information


St. Anna Children’s Hospital (Austria)

Sponsor details

Kinderspitalgasse 6

Sponsor type

Hospital/treatment centre



Funder type


Funder name

Marinomed Biotechnologie GmbH (Austria)

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Basic results (scientific)

Publication list

1. 2012 results in

Publication citations

  1. Results

    Fazekas T, Eickhoff P, Pruckner N, Vollnhofer G, Fischmeister G, Diakos C, Rauch M, Verdianz M, Zoubek A, Gadner H, Lion T, Lessons learned from a double-blind randomised placebo-controlled study with a iota-carrageenan nasal spray as medical device in children with acute symptoms of common cold., BMC Complement Altern Med, 2012, 12, 147, doi: 10.1186/1472-6882-12-147.

Additional files

Editorial Notes