I already have D3, C and Zinc at home and will be looking for Quercetin, Black Cumin Seed, and Lactoferrin (just so happen to have Benadryl in the med cabinet as well); basically anything that was stumbled upon this past week or two.
Am open to any suggestions.
still available online also.....but I was just mentioning its not something easily found OTC now. Iherb.com has some though