 This study investigates the antioxidant activities of water and methanol extracts of in vitro-propagated ceratophilum dimersumel, which has been traditionally used for treating various diseases. The results show that the water extract is more effective in all antioxidant activities, with total phenols being the highest antioxidant component. The IC50 value for chelating on ferrous ions and EC50 value for reducing power activity were determined as 9.24 mg per milliliter and 8.23 mg per milliliter, respectively, and both extracts exhibited increased metal chelating and reducing power activities with increasing concentration. Overall, the study suggests that both extracts of in vitro-propagated c-dimersum have beneficial antioxidant properties and can be utilized as a promising source of therapeutics. This article was authored by Bugrahan Emsen and Mohamed Dolgan.