PMID- 34693555 OWN - NLM STAT- MEDLINE DCOM- 20220404 LR - 20220405 IS - 1098-1128 (Electronic) IS - 0198-6325 (Linking) VI - 42 IP - 2 DP - 2022 Mar TI - Application or function of citric acid in drug delivery platforms. PG - 800-849 LID - 10.1002/med.21864 [doi] AB - Nontoxic materials with natural origin are promising materials in the designing and preparation of the new drug delivery systems (DDSs). Today's, citric acid (CA) has attracted a great deal of attention because of its special features; green nature, biocompatibility, low price, biodegradability, and commercially available property. So, CA has been employed in the preparation of the various platforms to induce a suitable property on their structure. Recently, several research groups investigated the CA-based platforms in different forms like tablets, dendrimers, hyperbranched polymers, (co)polymer, hydrogels, and nanoparticles as efficient DDSs. By considering an increasing amount of published articles in this field, for the first time, in this review, an overview of the published works regarding CA applications in the design of various DDSs is presented with a detailed and insightful discussion. CI - (c) 2021 Wiley Periodicals LLC. FAU - Pooresmaeil, Malihe AU - Pooresmaeil M AD - Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. FAU - Javanbakht, Siamak AU - Javanbakht S AD - Faculty of Chemistry, Shahid Beheshti University, Tehran, Iran. FAU - Namazi, Hassan AU - Namazi H AUID- ORCID: 0000-0002-1977-4677 AD - Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. AD - Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science, Tabriz, Iran. FAU - Shaabani, Ahmad AU - Shaabani A AUID- ORCID: 0000-0002-0304-4434 AD - Faculty of Chemistry, Shahid Beheshti University, Tehran, Iran. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20211025 PL - United States TA - Med Res Rev JT - Medicinal research reviews JID - 8103150 RN - 0 (Hydrogels) RN - 0 (Polymers) RN - 2968PHW8QP (Citric Acid) SB - IM MH - *Citric Acid MH - Drug Delivery Systems MH - Humans MH - Hydrogels MH - *Nanoparticles MH - Polymers OTO - NOTNLM OT - biomedical OT - citric acid OT - controlled release OT - drug delivery systems EDAT- 2021/10/26 06:00 MHDA- 2022/04/05 06:00 CRDT- 2021/10/25 06:58 PHST- 2021/08/02 00:00 [revised] PHST- 2021/02/02 00:00 [received] PHST- 2021/10/12 00:00 [accepted] PHST- 2021/10/26 06:00 [pubmed] PHST- 2022/04/05 06:00 [medline] PHST- 2021/10/25 06:58 [entrez] AID - 10.1002/med.21864 [doi] PST - ppublish SO - Med Res Rev. 2022 Mar;42(2):800-849. doi: 10.1002/med.21864. Epub 2021 Oct 25.