When used for a long period, this medication may not work as well and may require different dosing.

Some of the medicines come in long-acting forms that require less frequent dosing while providing long-lasting pain relief.

Artemisinin derivatives have half-lives of the order of an hour, and therefore require at least daily dosing over several days.

Other types of yeast infections require different dosing.

Switching from buprenorphine to other opioids is generally safe but requires careful dosing in the first few days.

However, it is poorly absorbed when used topically, and usually requires oral dosing to reach the infection with therapeutic levels inside of a stye.

Although unlikely, when this medication is used for a long time, it may not work as well and may require different dosing.

Not all pills can be split, since some come as time release capsules or require very precise dosing.

However, doxycycline treatment requires daily dosing for at least four to six weeks, making it more difficult to administer in the affected areas.

"This requires very precise dosing," he said.