Use of unconventional cancer treatments in the United States has been influenced by the U.S. federal government's National Center for Complementary and Alternative Medicine (NCCAM), initially known as the Office of Alternative Medicine (OAM), which was established in 1992 as a National Institutes of Health (NIH) adjunct by the U.S. Congress. More specifically, the NIC's Office of Cancer Complementary and Alternative Medicine sponsors over $105 million a year in grants for pseudoscientific cancer research. Over thirty American medical schools have offered general courses in alternative medicine, including the Georgetown, Columbia, and Harvard university systems, among others.[7]
Since herbs are food and not medicine, you can take them any time you want. Of course you wouldn’t want to take an energizing herb like ginseng right at bedtime or sedative herbs first thing in the morning. You can decide for yourself if you prefer to take herbs with or without a meal. Do what works best for you. Some herbs work better on an empty stomach. You’ll have to read the label on the supplement bottle to see what is the recommended way of taking them.

Peppermint leaves are well known for their healing properties. Menthol in peppermint soothes the throat and acts as a decongestant, helping to break down mucus. You can benefit by drinking peppermint tea or by inhaling peppermint vapors from a steam bath. To make a steam bath, add 3 or 4 drops of peppermint oil for every 150 milliliters of hot water. Drape a towel over your head, and take deep breaths directly above the water. 

Eating a clove or two of fresh garlic a day may indeed keep the doctor away, in part because it has immune-boosting, antibacterial, antiviral, and anti-fungal effects. Many of garlic's therapeutic effects are derived from its sulfur-containing compounds, such as allicin, which are also what give it its characteristic smell. In general, garlic's benefits fall into four main categories: