I was like you. Every winter without fail I'd be bunged up, bed ridden & voiceless from November to February, just sick.
January this year I said no more. Got my bloods done lo and behold I was low in iron & vitamin D, also asked my mum what she used to do to keep me healthy when I was younger.
I bought a high strength multivitamin (I like vitabiotics), super high dose iron tablet (get it from the pharmacy), ate beef & had chicken broth 2x a week, had an egg everyday, super high dose vitamin D 50,000iu once a week for 5 weeks, then 20,000iu 2x a week for the past 11 months. 1000-4000mg VitC (everyday depends how I'm feeling), added extra zinc, VitA & fish oil.
If I feel a sniffle I take extra vitC & VitD & the next day it's gone.
Eat ginger & a clove of garlic every other day, (no you won't smell, its great for heart disease, pain relief & immune health.
My nails have gone back to looking like acrylics & my hair growth is tremendous, skin glows, no common cold or flu has caught me out yet (crosses fingers, touches wood)
Watch Dr Berg, get as much uninterrupted sleep as possible & drink 1.5l of water every day to help your liver process the supplements.
This was longer than I wanted it to be, sorry 🤣