"Drugs tend to destroy tissue and do not cure; herbs strengthen tissue and do cure" (Mrs C.F. Leyel)!

An interesting quotation, taken from Mrs C.F. Leyel, founder the Society of Herbalists (now called the Herb Society) and Fellow of the Royal Institution of Great Britain.

Green Medicine by Mrs C.F. Leyel (1952)

Although this quotation was published in "Green Medicine", written in 1952, most modern day herbalists would agree that herbs provide a plentiful supply of bioavailable vitamins and minerals, so facilitating tissue repair.

Nettle (Urtica dioica) is an example of this, being rich in many vitamins and minerals, including iron. However, it is also rich in vitamin C, which improves the absorption of the iron. The stomach upsets which can accompany iron tablets are much less likely with the iron in plants.

Similarly, dandelion (Taraxacum officinale) has a history of use as a diuretic. Whereas pharmaceutical diuretics (water tablets) can deplete the body of essential potassium, dandelion leaves are rich in potassium, so this potential problem is unlikely.