Does naturopathy relieve pain?

Bromelain: Classified as an herb, bromelain is a sulfur-containing proteolytic digestive enzyme that is extracted from the stem and the fruit of the pineapple plant (Ananas comosus). Overall, there have been various studies on the anti-inflammatory actions of bromelain in animal, in vivo, ex vivo, and human clinical trials; results are promising. The majority of clinical studies have shown a positive effect with bromelain in the treatment of inflammation with minimal adverse events. Bromelain may affect individuals with bleeding disorders or those on medications that decrease clotting, such as aspirin or warfarin (Coumadin).

Comfrey: Comfrey (Symphytum officinale) has been found to have anti-inflammatory effects and may help decrease pain. Clinical trials investigating topical application of comfrey-containing creams have found significant reductions in inflammation and pain associated with sprains and muscle injuries. Overall, these studies have been well designed although some improvements in reporting are needed. Comfrey should only be used externally (on the skin), as internal use may cause liver damage. Various countries, including the United States, have asked companies to remove oral comfrey products from the market, and topical products are required to advise consumers not to use on broken skin. Other countries, such as Germany, allow topical comfrey products with a label including the maximal daily allowable levels of pyrrolidizine alkaloids of 100 micrograms and maximal use over six weeks per year.