Wernicke’s Encephalopathy: A Series of 7 Cases and Literature Review

Table 2.

Comparative table of IV thiamine protocols in Wernickeencephalopathy

Society / Reference Initial dosage Acute-phase duration Maintenance dose Oral switch Particularities / precautions

Royal College of Physicians (UK)
Thomson et al., 2002
500 mg IV every 8 h ≥ 2-3 days 250 mg/day IV for 5 days 100-200 mg/day Administer before glucose; dilute in 100 mL 0.9% NaCl; monitor Mg²⁺

EFNS (Europe)
Galvin et al., 2010
500 mg IV every 8 h ≥ 3 days 250 mg/day IV or IM 100-200 mg/day oral Protocol widely used in neurology; also used in prevention (alcoholism, bariatric surgery, hyperemesis gravidarum)

USA (UpToDate / NIH 2023) 500 mg IV every 8 h 2-3 days 250 mg/day for 3–5 days 100-200 mg/day Prevention: 100 mg IV/day for high-risk patients; systematic magnesium supplementation

Consensus practice (Lancet Neurol 2022) ≥ 500 mg IV every 8 h 2-3 days 250 mg/day for 3–5 days 100-200 mg/day Most widely recommended regimen; optimal for preventing Korsakoff syndrome