On the Internet, some sites outside the U.S. use the compound designation milliard/billion to designate the number 1 000 000 000. In science, the names of large numbers are usually avoided completely by using the appropriate SI prefixes. Thus 10 9 watts is a gigawatt and 10 12 joules is a terajoule.
Blood thinners like warfarin (Coumadin) can make you bleed more easily -- including from your gums. Some anti-seizure, blood pressure, and immune-suppressing drugs make the gums grow too quickly. The new gum tissue is more delicate and may bleed when you brush it.
Certain medicines also increase the likelihood that your gums will bleed. Some over-the-counter pain relievers, like aspirin, thin the blood and can therefore increase bleeding. It's also possible for a prescription medication to cause gum bleeding. If that is the case, your doctor might prescribe a different dose or a different medication altogether. Always talk to your doctor if you think a medication is causing side effects, even if they seem mild.