
The Effect of Zinc Acetate Lozenges on the Rate of Recovery From the Common Cold
Common ColdRespiratory Tract InfectionsA randomized parallel-group two arm superiority trial with an allocation ratio 1:1, both participants and investigators blinded. The zinc lozenge that will be used in the study is a commercial product available from the University Pharmacy, Helsinki, Finland. The product is classified as a "medical device" and it is not regulated according to the jurisdiction for medicines. Each lozenge contains 13 mg elemental zinc as zinc acetate. The instruction in the commercial package for common cold patients is to dissolve slowly 6 lozenges per day in their mouth, which totals to 78 mg/day of elemental zinc, at most for 5 days. The same instruction will be used in this trial. The University Pharmacy prepared 200 placebo lozenge packages so that the placebo lozenges contain sucrose octaacetate, and they are similar with the zinc lozenges in visual appearance and in taste. 200 packages of zinc lozenges will be used as the active intervention. The packages will contain 30 lozenges (6 lozenges/day × 5 days). The packages of lozenges will be distributed to the enrolled participants in November 2017. The participants will be instructed to keep the package readily available so that, when they catch the common cold, they will find the package and they can start to take the lozenges according to the instructions. The participants will be instructed to start taking zinc lozenges as soon as they start to suffer from the first symptoms of the common cold. The participants will be instructed to take 6 lozenges daily over the time awake, evenly distributed, allowing the lozenge to dissolve in the mouth as slowly as possible. The duration of intervention is for the maximum of 5 days. If the symptoms disappear before 5 days, the participant may stop the usage of the lozenges. There will be no limitations for other treatments that participants wish to use for treating their colds. Participants will be requested to respond to a web-based symptom questionnaire daily from the first day of the treatment to the recovery from the common cold, or to a maximum of 2 weeks.

Evaluation of ColdZyme® on Experimentally Induced Common Cold.
Common ColdThis study evaluates the performance of ColdZyme® mouth spray on prevention of common cold symptoms on experimentally induced rhinovirus upper respiratory tract infection in healthy volunteers. Half of participants will receive ColdZyme® mouth spray while the other half will receive placebo.

Effect of Paracetamol on the Common Cold
Common ColdThe aim of this study is to subjectively assess symptoms in subjects suffering from the common cold following a single dose of paracetamol hot drink compared to paracetamol tablet

Effects of Two Doses of a Common Cold Treatment on Alertness
Common ColdThis study will investigate any improvement in alertness and performance based on cognitive function and mood assessment in subjects suffering the common cold, when taking a novel paracetamol and caffeine combination verses paracetamol alone.

Kinetics of Etheric Oils, Smart Textiles vs. Ointment
Common ColdThe purpose of the study is to determine whether the application form of etheric oils (camphor, cineol and menthol) causes changes in the concentration of this agents in the exhaled air. The second aim of the study is to determine differences in the subjective convenience of the application forms. We will test an commercial ointment application vs. smart textiles. Smart textiles are new high-tech products with the unique possibility to combine the textiles with functional products e.g. pharmaceutical agents.

Efficacy and Safety of Resveratrol and Carbossimetyl Beta Glucan in Treatment of Upper Airways Disease...
Common Coldoutpatient infants (0-6 months of life), affected by symptoms of upper airways disease will be randomly assigned to two type of intervention: A: treatment group, receiving resveratrol and carbossimetyl beta glucan; B: control group, receiving saline solution. Each subject underwent clinical history, objective examination and detection of rinovirus in the nasal secretions at enrollment, after 48 hours and after 7 and 30 days.

Study to Investigate if Sucking a Coldamaris Lozenge Elutes Sufficient Iota-carrageenan to Inactivate...
Common ColdViral InfectionColdamaris lozenges are a medical device containing 10 mg carrageenan/lozenge. The goal of the study is to determine whether the iota-carrageenan content in the saliva of subjects who sucked Coldamaris® lozenges is sufficient to inhibit the replication of 4 of the most common respiratory viruses causing common cold. At least 29 subjects will be screened, in order to get 24 subjects included.

Echinaforce Study to Investigate Explorative Pharmacology and Effectiveness to Prevent From Enveloped...
Respiratory Tract InfectionsCommon ColdIt is a single-center, randomized, open-label, phase IV study for the explorative investigation of the pharmacological mode-of-action of Echinaforce® extract in the form of Echinaforce® Chewable tablets"- Further, it is aimed to evaluate the effectiveness of the study product for the prevention and treatment of respiratory tract infections in generally healthy adults following a real-life setting. The study covers 2x2 + 1 month of prevention in 120 randomized participants following a tight sampling set-up for sensitive detection of viral infections by RT-qPCR analysis of nasal swabs and seroconversion of SARS-CoV2 IgG/IgM in serum samples.

Effects of Pleconaril Nasal Spray on Common Cold Symptoms and Asthma Exacerbations Following Rhinovirus...
AsthmaCommon Cold2 moreThis is a randomized, multi-center, double-blind, placebo-controlled study evaluating the efficacy of pleconaril nasal spray in preventing asthma exacerbation and common cold symptoms in asthmatic participants exposed to picornavirus respiratory infections. Participants will be assigned treatment with pleconaril or placebo nasal spray for 7 days (14 doses). Participants will be followed for an additional 14 days.

Efficacy of Homeopathic Nasal Formulation for Management of Experimental Rhinoviral Colds
Common ColdCommon colds affect many people and are the cause of bothersome symptoms such as runny or stuffy nose, sore throat, headache and sneezing. Common colds can also cause more severe illnesses in certain groups of people like the elderly, people with chronic lung diseases such as asthma. This study is designed to test whether a non-drug (homeopathic) nasal spray will reduce the incidence of colds, decrease cold related symptoms or shorten the length of the cold.