I haven't had a fever in 4 years. Never had a flu shot. I take D3K2/Magnesium Glycinate/Full Spectrum Aminos/MethylatedBComplex/BlackGarlic/PlantSterolsBeets/Liposomal C/DHEA/Berberine Not sure that's a good stack for everyone, but works for me. Any Dr's care to weigh in on this combo?