With medicinal herbs such as thyme and lavender, they can help treat or relieve symptoms.
Some people also find that using them in combination with herbal medicines can help relieve the symptoms of arthritis, cancer, heart disease and many other conditions.
However, the effects of using medicinal herbs are less clear.
The health ministry says that some herbal products may help with pain and nausea.
However, it also says that people can use them only if they are at a reduced risk of developing these illnesses.
Some medicinal herbs can also cause problems for the body, such as the heart, kidneys and liver.
They are often used in certain diseases that cause inflammation, such to the immune system.
Health authorities say that there is no evidence that these herbal medicines are unsafe.