Boswellia has been used in the Ayurvedic medicine system of India for over 2,000 years. Ancient healers used it to treat conditions such as asthma, fevers, cardiovascular disorders, rheumatism, and diabetes. Today, this herb is mostly used to treat inflammation and pain of the joints. The tree’s resin contains boswellic acid that acts as a 5-LOX (5-lipoxygenase) inhibitor.
Lavender oil has a chemically complex structure with over 150 active constituents.9 This oil is rich in esters, which are aromatic molecules with antispasmodic (suppressing spasms and pain), calming, and stimulating properties. The chief botanical constituents of lavender oil are linalyl acetate, linalool (a non-toxic terpene alcohol that has natural germicidal properties), terpinen-4-ol, and camphor. Other constituents in lavender oil that are responsible for its antibacterial, antiviral, and anti-inflammatory properties include cis-ocimene, lavandulyl acetate, 1,8-cineole, limonene, and geraniol.

​Witch hazel is an interesting herb that I've only recently found out about, it has been used for centuries by the Native Americans though.  When I was researching witch hazel I assumed that it got its name for warding off witches or something, but it actually was used as a witching stick for locating underground sources of water and or precious minerals. Witch hazel might not be considered an herb by some due to the fact it is a woody shrub, but it has very strong astringent and antiseptic properties so I just had to include it in the list of herbs along with its uses. Today you can find witch hazel in pretty much any drugstore in the form of witch hazel water (an alcohol extract of the twigs). The only problem with this is that most of the time the extract contains very little of the actual herb, and most of the effects might actually come from the alcohol itself.
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: