Because children with Marfan are at increased risk for infective endocarditis, they must take a prophylactic dose of an antibiotic before having dental work or minor surgery, as these procedures may allow bacteria to enter the bloodstream.
The invention of the hypodermic needle in the mid-nineteenth century, however, increased the number of addicts because it allowed opioids to be delivered directly into the bloodstream, thereby dramatically increasing their effect.
When enough fluoride from water, supplements, food, or other sources enters the bloodstream and reaches the teeth while the enamel is forming, the fluoride can replace a piece of the hydroxyapatite molecule to form fluorapatite.
Basically, the faster a food and its carbohydrate content gets absorbed into the bloodstream, the higher the blood sugar, and hence the higher the insulin amount coming in to transfer the blood sugar to the cells of the body.
Because the drug takes four to ten days to reach a therapeutic level in the bloodstream, it sometimes is prescribed in conjunction with neuroleptics and/or benzodiazepines to provide more immediate relief of a manic episode.