For toothaches a clove or drop of clove oil on a cotton ball can be placed on the aching tooth. This method should be used sparingly however and do not place the oil on the gum. For nerve pain a diluted oil up to 3% max can be applied to the skin to treat problems such as shingles. In small doses clove powder can be useful for treating things such as nausea, indigestion, and bloating.
In 2008, the United States Federal Trade Commission acted against companies that made unsupported claims that their products, some of which included highly toxic chemicals, could cure cancer.[46] Targets included Omega Supply, Native Essence Herb Company, Daniel Chapter One, Gemtronics, Inc., Herbs for Cancer, Nu-Gen Nutrition, Inc., Westberry Enterprises, Inc., Jim Clark's All Natural Cancer Therapy, Bioque Technologies, Inc., Cleansing Time Pro, and Premium-essiac-tea-4less.

Generally garlic is safe when taken in a regular diet. There is a small risk that can occur however when eating large doses of garlic daily, taking more than 4 cloves per day can affect the bodies platelets hindering them from forming clots. You should reduce use of garlic around 2 weeks before having any type of surgery and if you're taking anticoagulant medications.
Scientists don’t know for sure. Since chemotherapy and radiation kill cells that divide often, stem cells may be less vulnerable because they rarely divide. Some scientists believe cancer stem cells may have genetic mutations that make them resistant to damage from chemotherapy or radiation, or cancer stem cells may be able to repair DNA damage more rapidly than normal cells.
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: