For those of you taking supplemental zinc, the early signs of having ingested too much, are quite standard; nausea, stomach pain, diarrhea and vomiting.
In severe cases, gastro intestinal discomfort has been a result of internal bleeding.
Symptoms of toxicity can result from taking too much supplemental Zinc or from accidentally ingesting non food grade zinc (think cleaning products).
The rest of the symptoms are either worse or strange, and I’ll list them for you below.
Too much zinc, like too much of many other supplements can mimic flu symptoms with chills, fever and aches.
Levels of zinc above your RDA for too long can tank your HDL, or your good Cholesterol.
Levels of zinc that are too low or too high for any notable period of time can wreak havoc on your sense of smell and therefor taste as well.
Because zinc and copper are both absorbed in the small intestine, when you are getting a ton of zinc, it can be harder for copper to make it’s way through, therefor leading to a deficiency. That’s why Bulletproof packages zinc with copper in their supplement line.
Finally, too much zinc, perhaps taken with the hopes of getting your immune system up and running with all the vigor of a war time radio operator can have a counter intuitive effect and suppress your immune response. thats a real case of damned if you do and damned if you don’t.
With zinc, a supplement that has become so sensationalized recently but is still not well understood by us common folk from a nutritional standpoint (seriously, name a great nutritional source of zinc, I’ll wait) your best bet is to have your levels tested before you start a campaign. But if you are determined to go your own way, shoot for like, 50% – 70% of the service size indicated on the bottle.
That’s my rule for most things across the board honestly and in this case, could save you a lot of discomfort.
My second most important rule is source from Healtlline, as usual. Heres the whole article on zinc toxicity for anyone interested.