Active clinical trials for "Rhinitis, Allergic"

To evaluate the changes in proinflammatory markers (ltd4 in urine) and eosinophil from peripheral blood after newly initiated montelukast therapy.

Eye symptoms of tearing, redness and itch frequently occur in patients with allergic rhinitis or hayfever. The purpose of this study is to learn whether placing allergen (the substance that causes allergies) in the nose several days in a row will cause an increase in eye symptoms and whether receiving a nasal steroid spray will prevent these eye symptoms.

A previous study has shown very clearly that the treatment with the combination of cetirizine and pseudoephedrine is superior to the treatment with the single agents regarding the reduction of symptoms in patients with allergic rhinitis. These data, obtained after controlled pollen exposure out of the pollen season, showed highly reproducible individual responses prior to dosing. It is not clear, however, whether the same results can be obtained during the pollen season, when additional natural pollen exposure may influence the variability of the individual reactions.

This study will evaluate the ability of montelukast to improve the signs and symptoms of seasonal allergic rhinitis compared with loratadine and placebo.

This is a randomized, two-way crossover, multicenter study evaluating the consumer preference of Phenylephrine Extended Release Tablets, 30 mg to be taken as one tablet every 12 hours, or Phenylephrine Immediate Release Tablets, 10 mg to be taken as one tablet every 4 hours in subjects with at least mild allergic rhinitis and nasal congestion. Approximately 250 participants will complete a questionnaire after taking one test product for 3 days followed by a 3 day (± 1 day) washout period; and then taking the alternate test product for 3 days. Analysis of which product the consumer preferred, if any, and which product was more convenient, if any, will be evaluated.

A total of 41 adults with perennial allergic rhinitis were enrolled in a first double-blind placebo-controlled phase for six months, and treated on a weekly basis with sublingual doses of single individualized homeopathic medicines or placebo. After this closed initial phase, all patients were invited to participate in an long-term open-label controlled phase, in that they would receive homeopathic treatment for the maximum period of 36 months, and the results were compared with the improvement of initial phase. Signs and symptoms scores, rescue medication requirements and quality of life were assessed by questionnaires and personal clinical evaluation by a same independent researcher, before and after each phase. Primary and secondary clinical outcome were, respectively, specific and general allergic signs and symptoms scores. Total IgE titles were performed before and after each phase.

An H3 receptor antagonist should reduce the congestion associated with allergic rhinitis. A nasal allergen challenge will be given to patients to induce rhinitis symptoms and acoustic rhinometry will be used to measure the congestion.

A study of the ability of montelukast to improve signs and symptoms of seasonal allergic rhinitis compared with placebo. Loratadine is included in the study as an active control.

The researchers in this study want to find out whether participants with a history of stuffy nose due to allergic reactions in the nose would intend to buy drug Phenylephrine Hydrochloride (Phenylephrine HCl) extended release tablet (a pill is formulated so that the drug is released slowly over time) after receiving it once in this study. Phenylephrine HCl is an over-the-counter (OTC) drug (a medicine that can be bought without a prescription) used to provide temporary relief of stuffy nose caused by cold or allergies in mouth, nose and throat. Phenylephrine HCl immediate-release tablet (a pill with drug released rapidly without special rate controlling) was already approved to be used for adults and children and the recommended dose for adults and children 12 years or older is 10mg every 4 hours. Phenylephrine HCl 30mg extended release tablet used in this study is not yet approved but under development with a goal to relieve stuffy nose for every 8 hours. Researchers also want to find out if participants have any medical problems during the trial. Participants in this study will be asked to record their stuffy nose symptoms in a diary before and after drug intake. At 8 hours after drug intake, participants need to assess whether they intends to buy the drug or not and their overall satisfaction of the stuffy nose relief. At the end the participants will complete a questionnaire about their job, learning background, income and medical history of stuffy nose.

The aim of the study is to compare the incidence of dental caries and the level of demineralization in pediatric patients with asthma and/or allergic rhinitis. Patients will conduct professional oral hygiene at the baseline. The following clinical indexes will be assessed: BEWE Index, Plaque Index, Bleeding Score, Schiff Air Index. Then, patients will be randomly divided into two groups: Trial group: domiciliary use of Biorepair Total Protective + desensitizing enamel-repair shock treatment twice a day Control group: domiciliary use of Elmex Caries Protection twice a day The clinical indexes will be assessed again after 1 month (T1), after 3 (T2) and 6 months (T3).