1. Chaga is a mushroom which grows on dead birch trees in the North country. I did not yet know about it when I was dealing with cancer but have heard amazing testimonials about the extract's ability to heal. I use it as a decoction (strong tea) on a semi regular basis.

2. I was looking for someone to give me Vitamin C therapy when I had cancer. At the time, I could not find a US doctor to do it. I had familial responsibilities and was unable to leave the Country to give it a try. Liposomal Vitamin C has actually brought folks with infection back from the dying but, to my knowledge, other than Linus Pauling's dramatic statements, little has been done to investigate his claim:

https://www.sciencedaily.com/releases/2007/09/070910132848.htm

3. Curcumin is a component of the spice and dye turmeric. It is my personal belief that using a whole rhisome (sorta like an orange ginger looking bulb) is of greater benefit. Until very recently, doctors had no idea how turmeric could cross the blood/brain barrier. Despite having been slicing up cadavers for 100s if not 1,000s of years, it was only very recently that doctors discovered that turmeric uses a different pathway to get into the head. A teeny highway which is right next to blood channels.

4. Comfrey has long been used to heal bone structure.

http://www.homeopathyforhealth.net/2010/02/16/symphytum-officinale-a-homeopathic-first-aid-remedy/

It isnt good to ingest it as a tea or decoction for too very long a few weeks maximum) but you can use it to your heart's content as a compress.

5. I am not a believer in CBD oil although I do hear it is great for seizures. I am, however, a proponent of FECO (full extract cannabis oil) and believe in its curative powers. I have listened to testamonials and personally experienced it act as a sort of skin bleach to wipe away areas of dermatological concern.

I am sorry for your nausea. They is no better time to eat freshly and cleanly than when undergoing radiation which (I believe) strips away a body's emergency reserves of minerals. Celery. Cucumber. Look up "miracle berry" please to alleviate your nausea long enough to eat.

Best wishes.

Here are some write-ups from Memorial Sloan Kettering's site. I didn't read them all the way through, but coming from MSK, I would be inclined to trust the information.

1. Chaga mushrooms: https://www.mskcc.org/cancer-care/integrative-medicine/herbs/chaga-mushroom

2. Curcumin: Hmmm, it sent me to Tumeric where curcumin is discussed. https://www.mskcc.org/cancer-care/integrative-medicine/herbs/turmeric

3. Vitamin C: https://www.mskcc.org/cancer-care/integrative-medicine/herbs/vitamin-c

4. Comfrey: https://www.mskcc.org/cancer-care/integrative-medicine/herbs/comfrey (This is the one that made me go to the MSK site. I have some infusing in olive oil now so have done some reading on it. It definitely has its place in life, but demands care be taken.)

Good luck, @Julia468!

I discovered a never mentioned pain relief during my cancer? Do you have a pet. If you do make use of your furry friend. My medical center had therapy dogs in the chemo suite. Cats' purr helps bones heal. If you don't have a furry companion perhaps a friend could lend you theirs for a few hours.
I second geekling's advice about curcumin. It is changed during the process here is a recipe for Turmeric tea
https://www.drweil.com/videos-features/videos/how-to-make-turmeric-tea/
I like to add some crystalized ginger to my turmeric tea. Ginger settles my stomach
Be sure to check with your Dr. about supplements. Also try to get off of pain killers as quickly as possible. Many Dr.s are reluctant to discuss pain management they just prescribe large doses of one size fits all pain pills. There are more effective ways to control pain than pills and they don't cause nausia and constipation. They include accupuncture, relaxation tapes, music and even hypnotism.
Have you tried Seabands for nausia

Be careful, LWC, as there is more than one type of comfrey which is why @Julia468 is correct to ask about it using its Latin name.

https://en.m.wikipedia.org/wiki/Symphytum_officinale

Symphytum officinale brings up: https://www.mskcc.org/cancer-care/integrative-medicine/herbs/comfrey and the following patient warnings:

--On July 6, 2001 the U.S. Food and Drug Administration, along with the Center for Food Safety and Applied Nutrition, advised all dietary supplement manufacturers to remove products containing comfrey from the market.

--Comfrey contains compounds that are toxic to the liver and can cause liver cancer.

I would be hesitant to use much of it personally ... though I will use infused olive oil as a small part of a recipe for balms made specifically to address wound healing and/or reduction of inflammation, much the same as I will use arnica-infused and calendula-infused oils.

Try looking into castor oil instead, LWC. There is nothing much to sniff. Olive oil is food. Castor oil is medicine. Arnica is a completely different ball of wax. Arnica stops pain. Comfrey stops inflamation and its traditional name is "knitbone" which is self explanatory.

Olive oil: Wound healing, dry skin, eczema, antioxidant, aging skin, can be used as a skin cleanser. Olive oil has been used to maintain skin and muscle suppleness, heal abrasions, and soothe the burning and drying effects of sun and water. Olive oil has excellent anti-oxidant activity.

Yes, LWC, olive oil is an excellent cleanser.

It is also a very stable oil. That is the primary reason that so many people infuse their herbs into it.

Geekling is our go to for everything Natural or Organic , full of very useful advice on what to take or stay away from.

@Whitey61 ... not my go-to ... not by a LONG stretch!!! I have to research EVERYTHING she says because a lot of it is wrong. For instance, the olive oil statement above. I rarely go with what she says :) But, that's just me.