Zinc: You're Probably Doing This Wrong
If you take a zinc supplement, I want you to stop for a second and ask yourself two questions: Am I taking this with food? And: Am I taking it alongside copper?
If you answered no to either one, this post is for you.
And if you Don't Feel Like Reading, Here's the Video
Zinc is one of the most underrated minerals in the body — and one of the most commonly mismanaged supplements on the market. People take it thinking “more immune support, no downside,” and end up with stomach irritation, or worse, a slow-building copper deficiency they never connect back to the zinc bottle on their counter.
Let’s fix that.
Why zinc matters more than most people realize
Zinc is a cofactor for hundreds of enzymes in your body. It’s involved in:
→ Immune cell development and function — your T-cells and natural killer cells depend on adequate zinc to do their job
→ Wound healing and skin integrity
→ Digestive enzyme production and gut lining repair
→ Taste and smell perception
→ Hormone regulation, including thyroid conversion
Your immune system in particular is zinc-hungry. Zinc deficiency is directly linked to impaired immune response — slower recovery from colds, more frequent infections, and poor wound healing. This is why zinc lozenges are marketed so heavily during cold season — there’s real mechanism behind that.
The depletion nobody talks about
Here’s the part that surprises most of my clients: zinc depletion is common, and it’s largely invisible until it isn’t.
Chronic gut conditions (Crohn’s, Colitis, IBD), high-stress lifestyles, restrictive diets, plant-based eating without careful planning, chronic diarrhea, and even just aging all quietly drain zinc stores. Add in soil depletion affecting the zinc content of our food supply, and you have a population that’s more zinc-insufficient than most bloodwork panels reveal — standard labs often don’t flag it until it’s fairly advanced.
Signs worth paying attention to: frequent colds, slow-healing cuts, hair thinning, loss of taste or smell, brittle nails, and — if you have IBD — impaired gut lining repair.
The mistake: taking zinc on an empty stomach
Zinc is notorious for causing nausea and stomach irritation when taken without food. This is one of the most common reasons people “can’t tolerate” a supplement and give up on it entirely.
The fix is simple: always take zinc with a meal. Food buffers the mineral and dramatically reduces GI upset. If you’ve tried zinc before and it made you queasy, that’s very likely why — not that zinc itself doesn’t agree with you.
The surprising part: zinc depletes copper
This is the piece almost nobody mentions when they hand you a zinc bottle.
Zinc and copper compete for absorption in the gut, using the same transport protein. Take zinc regularly — especially at higher doses or over an extended period — and you can measurably suppress your copper status over time. Copper deficiency can show up as fatigue, anemia-like symptoms, neurological changes, and connective tissue issues.
This is exactly why I generally recommend a combination zinc-copper supplement for most people using zinc beyond short-term, high-dose situations (like actively fighting an infection). A typical ratio you’ll see in formulated products is somewhere around 10:1 or 15:1 (zinc to copper) — enough zinc to be therapeutic, enough copper to prevent the mineral from cannibalizing itself. This isn’t something to self-adjust; work with your physician or practitioner on dosing that fits your specific situation.
So which form of zinc should you actually take?
Not all zinc is created equal. Here are three forms worth knowing about:
→ Zinc bisglycinate (glycinate): Zinc chelated to the amino acid glycine. This is generally the gentlest form on the digestive tract and shows strong absorption in research — a good everyday choice, especially if you have a sensitive gut or IBD. (I also talk a lot about zinc carnosine — a related chelated form studied specifically for gut lining support — in my leaky gut video, if you want to go deeper on that connection.)
→ Zinc citrate or gluconate: These are well-studied, well-absorbed forms with solid research behind them, including isotope-tracer studies showing comparable absorption between the two and better absorption than zinc oxide. A reliable, cost-effective choice.
→ Zinc picolinate: An older study (Barrie et al., 1987) suggested picolinate may have an absorption edge over citrate and gluconate, though it hasn’t been widely replicated with more modern methods. Where I find it most useful is in combination — picolinate paired with copper and a probiotic tends to move the needle more than picolinate on its own.
What to avoid: zinc oxide as a standalone supplement — it has the highest elemental zinc content by weight, but the research consistently shows it’s the least well-absorbed form. It’s fine in topical products, not ideal for raising your internal zinc status.
A quick way to check your own zinc status
If you’re curious where you stand before starting a supplement, there’s a liquid zinc taste test you can do at home — it’s not as accurate as bloodwork, but it’s a genuinely useful starting point. Comment below if you’d like me to point you to the product I recommend for this.
The bottom line
Zinc is essential, commonly under-recognized as depleted, and easy to get wrong. Take it with food. Consider a zinc-copper combination if you’re using it regularly. Choose a well-absorbed, gut-friendly form like bisglycinate, citrate, or gluconate. And always coordinate dosing with your physician or practitioner, especially if you have IBD or another chronic gut condition.
Have you ever taken zinc and had it upset your stomach? Drop a comment — I’d love to know if this reframes anything for you. And if you’re interested in the at-home zinc status test I mentioned, let me know that too.
This Friday, I will be sharing with members the Zinc supplements options in detail, the liquid to test your Zinc status and protocols with details.
Dr. Inna Melamed, PharmD, is a functional/integrative medicine practitioner, a pharmacist with close to 3 decades of clinical experience and a two-time bestselling author. She helps people with chronic gut conditions — including Crohn’s, colitis, and IBS — find root-cause solutions at DigestiveReset.com.
Website: LINK here
YouTube Channel: LINK here.
Free Books: LINK here
Fullscript Dispensary: LINK here