immune

I’m looking to boost my immune system and take some vitamin d and vitamin C. my question is with vitamin B do you recommend injecting B12 or can I take this stuff orally? I’m currently in my late 50s and I would like to stop getting sick all the time

Pure synergy is 60 capsules which is 30 servings and it's an exclusive blend of seven organic mushrooms for immune support and super pure extracts of beta 13 glucan it also contains other ingredients as well and it's completely gluten free and made with Organic ingredients I'm looking to use it...

I’m concerned i might have some sort of parasites in my body cause i am coughing up some weird colored phlegm I was looking at something called parasite detox tonic which is good for immune system and gut health too Anyone try this?