Personally I would never use homeopathy to cure something as serious as lung cancer. It contains pretty much no herb just the energy of herbs-use real herbs.
To make it they take one part herb and 99 parts water and shake it then take one drop of that and add 99 parts water and shake it again,..then they do that again taking one drop of the very diluted mix and adding 99 of part of water and they dilute and dilute many times till not a molecule of the herb remains just water and the so called energy of the plants..maybe it has one part per million of water when done..In my opinion, it is useless spend the money on things with more of a chance of healing.
Dr Schulze's incurables has healed all those things but one must do every part exactly as directed..more on it is found here