Clinical Psychopharmacology and Neuroscience Papers in Press available online.

 
Effects of iron supplementation on attention deficit hyperactivity disorder in children treated with methylphenidate
Sepehr Tohidi 1, Elham Bidabadi 1,*, Mohammadjavad Khosousi 2, Melika Amoukhteh 1, Maryam Kousha 3, Parham Mashouf 4, Tamkin Shahraki 5
1Pediatric Diseases Research Center, Guilan University of medical sciences, Rasht, Iran, 2Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran, 3Department of Psychiatry, Shafa Hospital, Guilan University of Medical Sciences, Rasht, Iran, 4Arya hospital, Rasht, Iran, 5Guilan University of medical sciences, Rasht, Iran
Abstract
Objective: To evaluate the effect of iron on the attention deficit hyperactivity disorder, treated with methylphenidate.
Methods: This double-blind, randomized placebo-controlled clinical trial was performed on 50 children with attention deficit hyperactivity disorder under the treatment of methylphenidate, with ferritin levels below 30 ng/ml and absence of anemia. They were randomly assigned into two groups of ferrous sulfate and placebo, for 12 weeks. Conners' Parent Rating Scale (CPRS) was used to assess the outcome in the first, sixth, and twelfth weeks.
Results: Almost all CPRS subscales improved in the ferrous sulfate group from the baseline to the endpoint, although only the changes in conduct subscale scores were significant (P = 0.01). There was no significant difference in score changes between two groups in intergroup comparison. Also, the score of learning problems (P = 0.007) in the first six weeks, and conduct (P = 0.023) and psychosomatic (P = 0.018) subscales in the second six weeks were improved in the ferrous sulfate group compared with the placebo group.
Conclusion: Our study showed promising effects of iron supplementation in the improvement of subscales of the CPRS.
Accepted Manuscript [Submitted on 2020-10-31, Accepted on 2021-06-27]