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Table 4 Adverse events in groups receiving prophylactic agents for AMS

From: Rhodiola crenulata extract for prevention of acute mountain sickness: a randomized, double-blind, placebo-controlled, crossover trial

Adverse event Rhodiola(n = 102) Placebo (n = 102)
Difficulty in falling asleep 1 (0.98) 1 (0.98)
Light sleep 3 (2.94) 1 (0.98)
Dizziness 2 (1.96) 0 (0.00)
Drowsiness 2 (1.96) 0 (0.00)
Pruritus 1 (0.98) 1 (0.98)
Dry hand 1 (0.98) 0 (0.00)
Abdominal distension 1 (0.98) 0 (0.00)
General soreness 1 (0.98) 0 (0.00)
Dry mouth 0 (0.00) 3 (2.94)
Headache 0 (0.00) 2 (1.96)
Palpitation 0 (0.00) 2 (1.96)
Flushed face 0 (0.00) 1 (0.98)
Increased urination 0 (0.00) 1 (0.98)
  1. Data are presented as count (%).