Glossary

TD (or tid) – a short hand term for medication dosing that means ‘take three times a day’.

See also q8H.

Cmin or Ctrough – lowest concentration of a drug just before the next dose.

What happens when you take a drug?

prematurity (pregnancy) – when a baby is delivered after only 37 weeks or less.

natural history – the pattern a disease follows if it is not treated. The natural history of HIV includes very high viral load in the first weeks or months of infection (seroconversion), a drop in CD4 counts that then recovers, and then a slower progressive increase in viral load and decrease in CD4 count, that eventually lead to opportunistic infections.

Natural history graph and more details.

dronabinol – medicine made from the active ingredient in marijuana. Dronabinol is approved in the US but is no longer available in the UK.