Zinc doesn’t get much attention compared to vitamins C or D, but it’s involved in hundreds of processes in the body — and a small body of research suggests certain blood pressure medications may gradually lower it. Here’s what’s actually been studied, and what isn’t supported by the evidence.
Key Takeaways
- A systematic review of clinical studies found that ACE inhibitors, ARBs, and thiazide diuretics can increase how much zinc the body excretes in urine, lowering blood zinc levels over time in some patients.
- Beta-blockers were specifically tested and did not show the same effect — despite sometimes being lumped in with other blood pressure drugs in less careful health coverage.
- The ACE inhibitors studied were captopril and enalapril; zinc depletion has not been reported with lisinopril specifically, despite it being the most commonly prescribed drug in this class.
- Established symptoms of zinc deficiency include slow wound healing, reduced taste or smell, hair loss, skin issues, and a weaker immune response — memory loss and dementia are not among the symptoms recognized by major health institutions like Harvard Health or the NIH.
What the Research Actually Found
A 2013 systematic review in the International Journal of Clinical Practice pooled eight clinical studies examining how various blood pressure medications affect zinc status. It found that ACE inhibitors (specifically captopril and enalapril in the studies reviewed), ARBs like losartan, and thiazide diuretics were linked to increased urinary zinc losses and, in some studies, lower blood zinc levels. A separate three-month randomized trial in newly diagnosed hypertension patients found a similar pattern: zinc levels dropped with diuretics, calcium channel blockers, and ACE inhibitors specifically.
Beta-blockers, notably, did not show this effect in the same review — plasma zinc levels stayed essentially unchanged in patients taking them, a useful distinction since not every blood pressure drug class behaves the same way.
A Word About Specific Drug Names
It’s worth being precise here, since it’s easy to over-generalize within a drug class. The studies behind this research looked at captopril and enalapril — older ACE inhibitors — not lisinopril, which is currently the most commonly prescribed blood pressure medication in the US. One clinical reference source specifically notes that zinc depletion “has not been reported with lisinopril,” while still suggesting it’s reasonable to consider the possibility exists within the same drug class, given the shared mechanism.
What Zinc Deficiency Actually Looks Like
According to Harvard Health and the National Institutes of Health, recognized symptoms of zinc deficiency include slow wound healing, poor oral health, loss of taste or smell, skin lesions, hair loss, diarrhea, and a weakened im