Table 1.
Several studies with significant reduction in antithyroid antibody titers after vitamin D (cholecalciferol) supplementation.
| Author, Year, and Country | Number of Participants (F/M) | Dose of Supplementation Duration |
|---|---|---|
| Mazokopakis et al., 2015 (Greece) [29] | 173 F/13 M | 1200–4000 IU/daily for 4 months |
| Chaudhary et al., 2016 (India) [55] | 39 F/11 M | 60,000 IU weekly, 8 weeks |
| Simsek et al., 2016 (Turkey) [57] | 37 F/9M | 1000 IU/daily for 1 month |
| Krysiak et al., 2017 (Poland) [54] | 34 F | 2000 IU daily, 6 months |
| Mirhosseini et al., 2017 (Canada) [61] | 103 | Doses modified to achieve calcidiol concentration >40 ng/mL, 12 months |
| Chahardoli et al., 2019 (Iran) [58] | 42 F | 50,000 IU weekly, 3 months |
| Krysiak et al., 2022 (Poland) [60] | 42 F | 4000 IU daily for 6 months |
| Bhakat et al., 2023 (India) [56] | 50 | 60,000 IU weekly for 8 weeks |
| Robat-Jazi et al., 2022 (Iran) [59] | 40 F | 50,000 IU weekly, 3 months |
F: females. M: males.