I have done nerve electrical conductivity test with norologist and it was normal and he told me its a general thing
People with a prior history of gastrointestinal problems and aged individuals are more likely to suffer from intense stomach cramps and severe diarrhoea after taking high doses of vitamin B. Most people are able to get enough vitamin B12 from their diets, however, occasionally when running low, supplements or B12 injections may be recommended
intestinal permeability and mucosal healing
To compensate for the decline in its endogenous production, glutathione is now available in its reduced form, which is to say its most active antioxidant form, as a nutritional supplement
Pharmacogenomics J 17(2):170173
The Wolverine stack pairs BPC-157, which supports gut lining and tendon repair, with TB-500, which supports broader tissue regeneration