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High-dose or prolonged pyridoxine supplementation can also lead to alterations in other nutrient levels, for example, extended use of large doses has been associated with reduced serum folate concentrations in some reports, which suggests a need to monitor nutritional balance during long-term therapy

Most adverse events either resolved spontaneously within a few days with no adjustment for the dosage of melatonin, or immediately after the withdrawal

Biochim Biophys Acta (BBA)-Biomembranes (1995) 1237:5969

Neuroactive steroids reduce neuronal excitability by selectively enhancing tonic inhibition mediated by delta subunit-containing GABAA receptors