I take Hyland's Bioplasma Cell Salts to keep up with my electrolytes.
https://hylands.com/collections/cell-salts
Contains all these salts in one tiny pill:
Calc Fluor 6X, HPUS - cold symptoms
Calc Phos 3X HPUS - headaches
Calc Sulph 3X HPUS - cold symptoms
Ferrum Phos 3X HPUS - fatgue, headaches
Kali Mur 3X HPUS - cold symptoms, fatigue, headaches
Kali Phos 3X HPUS - headaches, nervous tension
Kali Sulph 3X HPUS - headaches
Mag Phos 3X HPUS - headaches, nervous tension
Nat Mur 6X HPUS - fatigue
Nat Phos 3X HPUS - fatigue, headaches, nervous tension
Nat Sulph 3X HPUS - cold symptoms, fatigue, headaches
Silicea 6X HPUS - fatigue