Which health-related products should be essential for families?

Just list some nutrients:

Vitamin c, anti-oxidation, improve immunity, cold and flu can be taken;

Vitamin B can increase metabolism and provide energy. Those who are tired and stay up late can take it.

Mecobalamin can repair nerves and improve peripheral neuropathy. People with migraine and mental headache can take it.

Probiotics, balance flora, regulate the stomach, constipation and diarrhea can all be used;

Melatonin can regulate biological clock and improve insomnia. People with poor sleep can take it.