How do i cure a head cold?

Here's the list:: (A head cold is a viral upper respiratory infection not be helped by antibiotics. So ....) Rest; stay hydrated (water, juice, warm lemon water with honey); soothe sore throat (salt water gargle:1/4-1/2 tsp salt in 8 oz warm water); combat stuffiness (OTC saline nose drops/sprays); relieve pain (acetaminophen/ibuprofen); sip warm liquids (chicken soup, tea); add moisture to air; OTC cold/cough meds

Immunity boost: 1. Throat coat liquorice tea: several times/day 2. Megafood Megaflora plus probiotics 4 caps 2 times/day for 1 week. 3. Sunshine for 30-45 minutes daily at noon or Vitamin D3 10,000 IU/day (NOW brand is good) 4. Zinc supplement 50 mg/day (NOW brand is good) with food for 7-10 days 5. No milk products for 10-15 days