in addition to D, Lysine and Epicor are Quercetin and Liposomal Glutathione.
Quercetin
Quercetin as an Antiviral Agent Inhibits Influenza A Virus (IAV) Entry
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728566/
Antiviral effect of flavonoids on human viruses.
https://www.ncbi.nlm.nih.gov/pubmed/2981979
Quercetin: A Promising Treatment for the Common Cold
https://www.longdom.org/open-access/quercetin-a-promising-treatment-for-the-common-cold-2329-8731.1000111.pdf
Quercetin ameliorates lipopolysaccharide-caused inflammatory damage via down-regulation of miR-221 in WI-38 cells
https://www.sciencedirect.com/science/article/abs/pii/S0014480018305562
Quercetin attenuates airway inflammation and mucus production induced by cigarette smoke in rats.
https://www.ncbi.nlm.nih.gov/pubmed/22465384
D25. COMMUNITY ACQUIRED PNEUMONIA: CONTROVERSIES IN MANAGEMENT
https://www.atsjournals.org/doi/abs/10.1164/ajrccm-conference.2010.181.1_MeetingAbstracts.A6847
Also: Liposomal Glutathione (this is more of a crapshoot based on some papers I read online. Actually, they are both "crapshoots" but I'm going to try it anyway).
Could Liposomal Glutathione And Liposomal Altrient Vitamin C Be The Magic Bullets For Protection Against Pneumonia?
https://www.abundanceandhealth.co.uk/en/blog/post/119-could-liposomal-glutathione-and-liposomal-altrient-vitamin-c-be-the-magic-bullets-for-protection-against-pneumonia
Oxidative stress and regulation of glutathione in lung inflammation.
https://www.ncbi.nlm.nih.gov/pubmed/11028671
Evidence for antiviral activity of glutathione: in vitro inhibition of herpes simplex virus type 1 replication.
https://www.ncbi.nlm.nih.gov/pubmed/8540746
Inhibition of influenza infection by glutathione.
https://www.ncbi.nlm.nih.gov/pubmed/12654482
LIPOSOMAL-GLUTATHIONE AS A POTENTIAL THERAPEUTIC AGENT TO CONTROL HIV-1 INFECTION AND TUBERCULOSIS
https://www.emjreviews.com/allergy-immunology/article/liposomal-glutathione-as-a-potential-therapeutic-agent-to-control-hiv-1-infection-and-tuberculosis/