A single oral dose of vitamin K should not be used, because the oral dose is variably absorbed and does not provide adequate concentrations or stores for the breastfed infant. (kellymom.com)
A single oral dose to end one migraine costs between $ 10 and $ 15; one injection costs $ 35. (discovermagazine.com)
Rats given a single oral dose of the drug once a week for six weeks became sterile after two weeks of use. (sciencenews.org)