Hos raske voksne frivillige (mellem 20 og 49 år) var absorptionen hurtig (tmax = 0, 9 ± 0, 3 timer og Cmax = 0, 9 ± 0, 2 mM) efter en enkelt oral dosis betain (50mg/ kg).
In healthy adult volunteers (age between 21 to 49 years), after a single oral dose of betaine (50 mg/ kg), absorption was rapid (tmax = 0.9 ± 0.3 hours and a Cmax = 0.9 ± 0.2 mM).