CapletPsychoorganic disorders related to ageing Initially 2.4 g daily in 3 divided doses for 6 wk. Maintenance: 1.2 g daily in 3 divided doses. Post-traumatic symptoms Initially 2.4 g daily in 3 divided doses, reduce stepwise to 1.2 g daily in 3 divided doses. Usual dose: 1.2-4.8 g daily in 2-3 divided doses. Inj 1 g IM/IV 3 times daily.