Question Taking supplements (NAC and Quercetin) as a precautionary measure – Recommended?

May 26, 2020
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Hello all,

I apologize if I seem to be asking for medical advice, which I am not. I just want to know if anyone has had the same question/experience and can may be direct me in the right path or point me to a source or share their opinion. After watching a few YouTube videos by channel “MedCram” and talking to couple of my friends in USA, I started to research more about NAC, Quercetin, and other supplements. Based on the YouTube video (, I have started taking the following every day:

· NAC 600mg

· Quercetin 100mg

· Zinc 50mg

· Vitamin C 250mg

· Vitamin D 1000 IU (I am deficient in Vit D)

· General everyday multi-vitamin

Is it ok for someone who healthy to take these supplements as a precautionary measure? Will taking NAC while healthy help in any way to boost one’s immunity or help fight COVID if one gets infected in the future? Are there any side effects that I should be worried about? Any age group that should avoid these?

Unfortunately, doctors (general physicians) in my country don’t seem to know much about NAC or Quercetin. After taking couple of consultations I realized that they do not know much beyond a “google search”. If I have to get advice from a doctor, what type of a specialist can answer these questions? While I figure this out, I wanted to post this question out there and gather some more information.

Thank you for your time.
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Community Manager
Nov 12, 2019
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So, I've found myself wondering the same thing. After doing some research, it seems like the most sensible conclusion is this: There is no evidence to suggest that supplements or certain foods/ diets will actually boost our immune systems to specifically protect us from COVID-19. On that front, it's hygiene and distancing protocol that matters most. Having said that, it certainly wouldn't hurt to combine the right supplements with whole foods, an active lifestyle, stress control, etc. to help keep ourselves healthy and protected from a bunch of other conditions/ maladies.

I found this to be particularly helpful:
Apr 7, 2020
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I don't believe in any supplements. I have tried many and none except one seems to do anything well. I found one advertised on an airline magazine that claimed to boost the immune system against respiratory infections, colds, flu, sore thought. I suffer from these things so bad and frequently, I was desperate to try anything. When I got off the flight, I had a sore throat and was sneezing often, a sure sign of an impending virus bout. I managed to find these supplements in town and could not believe it got rid of the problem in 15 minutes and that was it. Since that day, it has worked for at least half a dozen times. I always take it before a flight and I don't come down with an infection that I almost always got.
It seems to prevent as well as cure viral infections. Looking at the ingredients, it has ginger extract, turmeric extract, and pomegranate. They are sold as lozenges. I don't know why they do not advertise it as a cure. I guess it costs a few billion dollars to approve it as a cure and perhaps because the ingredients are natural herbs based. I read reviews on the internet validating my finding with the only negative comment was about the price in the USA is about $16 for 10 pack Other Lozenges are cheaper but only soothe the throat for a few moments.
I don't know if it can cure coronavirus but I am keeping a few packs handy to try if it comes to that. I suspect it might help some if taken before or soon after infection but who knows. This supplement is called Phytorelief-CC and is advertised on Amazon and sometimes on eBay. I got several packs when I visited India and they were a lot cheaper.