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Table 2 Vitamin D3 supplementation in PD patients

From: The relationships of vitamin D, vitamin D receptor gene polymorphisms, and vitamin D supplementation with Parkinson’s disease

Author Country Type of study Number of participants (T/C) Intervention Follow-up Adverse events
Hiller et al. 2018 [148] USA RCT 27/24 Vitamin D3 10,000 IU/day 16 weeks None
Suzuki et al. 2013 [41] Japan RCT 56/58 Vitamin D3 1200 IU/day 12 months None
  1. T treatment group, C control group, PD Parkinson’s disease