I have had excessive saliva since Covid, over 4 1/2 years ago. At first my salivary glands would swell so large, it was hard to swallow. I would asperate myself because I would inhale by accident my excessive salvia. Which caused me to cough and have a sore throat for weeks. I saw many specialist, who had no idea as to why thiis happening. I started eating more spicier foods, sour balls, and drinks to try to clear out my glands. This has helped with my swelling glands, but not the excessive saliva issue. I have just gotten use to swallowing alot and maybe waking up to a drool ridden pillow.