Overview Methylprednisolone Injections Treating Birch Pollen Induced Allergic Rhinitis. Status: Active, not recruiting Trial end date: 2021-08-31 Target enrollment: Participant gender: Summary This study evaluates the effect of intramuscular injected methylprednisolone treating birch pollen induced rhinitis compared to placebo. Phase: Phase 4 Details Lead Sponsor: Karolinska InstitutetTreatments: MethylprednisoloneMethylprednisolone AcetateMethylprednisolone HemisuccinatePrednisolonePrednisolone acetatePrednisolone hemisuccinatePrednisolone phosphate