IRCT20230531058350N1 IRCT 2023-06-13 Islamic Azad University Investigating the effect of finasteride and zinc supplement on hair loss after covid-19 infection Comparison of the effect of zinc supplement along with finasteride and zinc supplement alone in the treatment of patients with hair loss and a history of covid-19 infection 2023-06-10 anticipated 64 Complete https://irct.ir/trial/70436 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The table of random numbers is prepared and by placing a hand on a number randomly and moving the hand in one of the predetermined directions, each person is given a number. People who have even numbers in will be in intervention group A and individual numbers will be in the group Intervention B, Blinding description: The participants in both groups and the researcher remain unaware of how the type of drug is allocated during the study. The patient is informed that there are two types of drug packages in a study and they will receive one of them randomly. Both are similar in packaging and have no difference. 4 hair loss. Intervention 1: Intervention group: For three months, receiving one finasteride 5 mg tablet after breakfast and one zinc sulfate tablet containing 10 mg zinc elemental after lunch. Intervention 2: Intervention group: For three months, take one tablet of zinc sulfate containing 10 mg of elemental zinc after lunch. No - There is not a plan to make this available Justification or reason for not sharing IPD is There are currently no plans to publish.