From some quarters it is recommended to supplement the mushroom extract with vitamin C, as research has found that the absorption/therapeutic effect of beta-glucans apparently is improved when combined with vitamin C:
This in vitro study regarding human bladder cancer cells showed that extract of the medicinal mushroom Maitake, when combined with vitamin C, not only reduced growth of bladder cancer cells by 90 % in 72 hours, but was also highly effective in killing the cancer cells Link.
In another study the anticancer properties of glucan, resveratrol and vitamin C combination was evaluated. It was found that, compared to the individual components, the combination was the strongest activator; the results demonstrated that the combination strongly suppressed the growth of breast and lung tumors, most likely due to the stimulation of apoptosis (programmed cell death of cancer cells) Link.
A slightly more detailed description of the results of the latter study Link.
And as explained by Dr. Ardigò the active ingredients present in medicinal mushrooms are absorbed more completely in the intestine, when combined with vitamin C. In particular, vitamin C breaks up the long molecules present in mushrooms into shorter sequences, increasing their absorption. In addition, Vitamin C promotes the synthesis of connective tissue – the tissue that constitutes the structural support of organs and tissues, protects blood capillaries and is a powerful antioxidant.
Additional info regarding possible safety measures in relation to Chaga mushroom and vitamin C.
From July 2020 I resumed giving Ditte vitamin C (2 x 150 mg) together with 2 of the day’s mushroom portions.
From January 2023, this has been increased to plus 2 x 30 mg, so that she receives a total daily dose of 360 mg vitamin C, corresponding to 129 mg/kg body weight of 2.8 kg *).
Ditte now gets vitamin C along with all 4 portions of mushroom extract.
Mixing one of the daily portions can be seen on this video.
Ditte has previously received vitamin C together with Coriolus Versicolor in the period from when tumors, etc., were found in the abdominal cavity (January 2017), until she no longer had tumors (April 2018).
*)
In my decision of dose of vitamin C for Ditte I have taken into account, that ascorbic acid (vitamin C), if not efficiently absorbed, can cause diarrhea in dogs. I therefore keep an eye that Ditte’s stools are normal and that the vitamin C does not cause any vomiting or problems with the acid levels in her stomach (I keep an eye that she doesn’t have acid refluxes). The daily dose of vitamin C is working fine for Ditte at the moment.
Links regarding vitamin C for dogs:
As described on the links below, dogs can, unlike humans, produce vitamin C in their bodies.
However, recent clinical observations indicate that when dogs are sick or stressed, they can rapidly deplete their bodies’ output of vitamin C.
It says that studies have found that dogs, supplemented with vitamin C, show greater resistance to disease and a better ability to recover from injuries or illness.
In addition, as dogs get old, they become less proficient at producing their own supply of vitamin C and more in need of antioxidants. It appears that vitamin C to even very old and feeble dogs can reinvigorate and strengthen them.
On the links vitamin C is, among other things, described as being able to improve immune function by enhancing white blood cell function and activity:
https://www.whole-dog-journal.com/food/benefits-of-vitamin-c-to-your-dog/
https://www.mypetneedsthat.com/vitamin-c-benefits-for-dogs/