@Thehair For GERD, Enhanced Cellular Nutrition 20-30 minutes after eating may help, as well as Stomach and Intestinal Ulcers Healing.
Perhaps Sapien’s stem cells audios would also help heal any damage done to the digestive system and esophagus.
For sore throat, you could try Experimental Virus Disruption, Coronavirus Disruption (Youtube or Gumroad), Lymphatic System Blockage Removal and Enhanced Drainage, and The Super Human Mutant x2 (every 12 hours). Coronavirus Disruption also works on other viruses in related families, such as the common cold.
Immune System Supercharger and Bone Marrow Strengthening and Enhancement will strengthen your immune system, and you can also use Sinus Drainage if needed.
Edit: Here is a link to the Hypothetical Virus Disruption & Immune System Strengthening Stack.