All natural remedy like herbs, spices, flowers, ,vitamines and homeopathy, all that nature put there to help our problem.
Example : milk thistle is a flowers who can help your liver if congestion, digestion, mucus caused by acidity.
Primerose oil: a flowers that helps to balance your hormones
Nettle tea or thyme, mint, is herbs that help to clean your lungs from muscus
Goldenseal: flower that helps if you have a bloody urinary tract infections.
Etc…it works very well for me. Everyone is different. The believe is also a factor. Hope this will help understanding Natural remedy!