IRCT20170313033051N2 IRCT 2019-03-30 Tehran University of Medical Sciences Impact of nebulized Tranexamic Acid in control of hemoptysis Impact of administration of nebulized Tranexamic Acid in control of symptoms and outcome of patients with moderate and severe hemoptysis 2019-04-19 anticipated 80 Complete https://irct.ir/trial/38303 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: 1- Administration of nebulized Tranexamic Acid 2- Using the randomization method 3- The double blindness of the study 4- The number of sample size in comparison with other studies, Randomization description: Block randomization Patients are randomly divided into two groups of cases and controls, and after assigning the code (drug or placebo) to each patient, the administration will be done in double blinded method (physician and patient), Blinding description: Participants, patient care physicians and outcome evaluators do not inform that administered drug is Tranexamic Acid or placebo and only the researcher is aware of the type of prescribing drug. During the analysis of the data, it is determined which participant has received the medication and which placebo. 3 Hemoptysis. Intervention 1: Intervention group: Nebulizing Tranexamic Acid 500 mg (5 cc) / q12 h for 4 times. Intervention 2: Control group: Nebulizing distilled water 5 cc / q12 h for 4 times. Yes - There is a plan to make this available What will be shared: Patients` data after collection, without name will be shared. When: 2 years after data collection To whom: Researchers and physicians Conditions: No condition Where to obtain: Via e-mail How to obtain: Studying the request and find the required information in the existing data bank and answering during 30 business days Comments: