IRCT20140623018206N2 IRCT 2021-07-14 Birjand University of Medical Sciences Evaluation of the effect of Familact synbiotic in treatment of community acquired pneumonia Evaluation of the effect of Familact synbiotic on the outcomes of the patients with community acquired pneumonia (clinical improvement, laboratory and complications) 2021-07-23 anticipated 130 Complete https://irct.ir/trial/45021 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients will be randomly divided into two groups using a random number table. In this way, first in Excel software, we create a variable from 1 to 130 (instead of 130, the total sample size). Then we create another variable in another column and generate 65 random numbers one and 65 random numbers two with the randomization command. The numbers of one are intervention group and the numbers of two groups are our placebo group, Blinding description: The study is double-blind. The patient and the executor (student) are not aware of the type of treatment each person receives. The tablets are designed in the same shape and in the same shape as the cans. Numbers 1 to 130 are written on dark envelopes and type A or B is placed inside the envelope. Envelopes are such that they will not be visible from the outside. In order, each person who opens the envelope will be opened in order and based on the A or B treatment, a can of A or B tablets will be given to the patient along with an explanation of how to use it. 3 community acquired pneumonia. Intervention 1: Intervention group: Familact capsule (once daily) for 10 days along with antibiotics. Familact® is a synbiotic compound (probiotic + prebiotic) and it contains high amounts of 9 beneficial and safe bacterial strains along with fructooligosaccharide as a prebiotic. The strains and prebiotics used in this product include the following: Lactobacillus rhamnosus, bifidobacterium lactis, Lactobacillus casei, Bifidobacterium breve, Lactobacillus acidophilus, Bifidobacterium langum, Lactobacillus plantarum, Bifidobacterium bifidum and Streptococcus thermophilus. Intervention 2: Control group: Only antibiotics. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is -