Drug class·Proton Pump Inhibitors·Reviewed June 9, 2026
PPIs and supplements: depletion is the bigger story.
For omeprazole and its siblings the interaction list is short but the depletion list is not: long-term acid suppression is associated with lower B12, magnesium, and other minerals that need stomach acid to absorb. The per-drug tables below cover both sides.
Proton Pump Inhibitors at a glance.
A quick, data-grounded summary. The per-drug tables are below.
Across the 5 PPIs in the NutriStack database (Omeprazole, Pantoprazole, Esomeprazole, Lansoprazole, and Rabeprazole), 15 substances have a documented interaction, 1 of them flagged to avoid or as a serious conflict. Long-term use of some medications in this class is also associated with lower Magnesium, Calcium, Iron, and Vitamin B12; the depletion table shows exactly which drugs. Interactions are documented per drug, and members of a class do not all behave the same, so check your exact medication below. None of this replaces your prescriber's advice.
The PPIs we track.
Open any medication for its own full interaction and depletion guide.
Substances that interact with PPIs.
Merged across the class, highest severity first. The 'Documented for' column shows which members carry the interaction record; an absent drug means no documented record, not proven safety.
| Substance | Interaction | Documented for | What happens |
|---|---|---|---|
| Betaine HCL | Conflict | Omeprazole, Pantoprazole | Omeprazole: Betaine HCL is taken specifically to lower gastric pH, while omeprazole is taken to raise it. The two are pharmacodynamically opposed:... |
| Calcium | Caution | All 5 PPIs | Omeprazole: Long-term omeprazole use reduces calcium absorption, particularly from calcium carbonate which requires an acidic environment for... |
| Iron | Caution | All 5 PPIs | Omeprazole: Omeprazole reduces gastric acid production, which is essential for converting dietary and supplemental iron to its absorbable ferrous... |
| Magnesium Glycinate | Caution | All 5 PPIs | Omeprazole: Long-term omeprazole use (>1 year) has been associated with clinically significant magnesium depletion (hypomagnesemia). The FDA issued a... |
| Vitamin B12 | Caution | All 5 PPIs | Omeprazole: Long-term omeprazole use significantly impairs vitamin B12 absorption. Gastric acid and pepsin are required to release B12 from food... |
| Vitamin C | Caution | All 5 PPIs | Esomeprazole: Esomeprazole lowers the concentration of bioavailable vitamin C in the stomach. In healthy volunteers, four weeks of a PPI reduced plasma... |
| Zinc | Caution | Omeprazole, Pantoprazole, Esomeprazole +1 more | Omeprazole: Long-term omeprazole therapy reduces zinc absorption and lowers body zinc stores. In one controlled study, plasma zinc rose 126% with... |
| Beta-Carotene | Caution | Omeprazole, Esomeprazole | Omeprazole: Omeprazole-induced hypochlorhydria reduces the absorption of beta-carotene. In a crossover trial, raising gastric pH above 4.5 with... |
| Iron Bisglycinate | Synergy | Omeprazole, Pantoprazole | Omeprazole: Iron bisglycinate is a chelated form of iron whose absorption is less dependent on gastric acid than conventional ferrous sulfate. For... |
| Melatonin | Synergy | Omeprazole, Pantoprazole | Omeprazole: Melatonin has gastroprotective and lower esophageal sphincter-tonifying effects and shows additive symptom relief when combined with... |
| Methylcobalamin | Synergy | Omeprazole, Pantoprazole | Omeprazole: Methylcobalamin, the active coenzyme form of vitamin B12, does not require gastric acid or pepsin to be released from food protein, making... |
| Probiotics | Synergy | Omeprazole, Pantoprazole | Omeprazole: Omeprazole shifts the gut microbiome and roughly doubles the risk of Clostridioides difficile and small intestinal bacterial overgrowth. A... |
| Zinc Carnosine | Synergy | Omeprazole, Pantoprazole | Omeprazole: Zinc-L-carnosine (polaprezinc) is a mucosal-protective chelate widely used in Japan for gastritis and ulcer healing. It is well studied as... |
| Saccharomyces Boulardii | Synergy | Omeprazole | Saccharomyces boulardii is a non-pathogenic yeast probiotic with strong evidence for preventing antibiotic-associated and C.... |
| Turmeric/Curcumin | Synergy | Omeprazole | A 2023 randomized, double-blind trial in patients with functional dyspepsia found curcumin alone, omeprazole alone, and the combination... |
What PPIs can deplete.
Nutrients associated with long-term use somewhere in this class, worst documented severity first. Discuss any replacement with your prescriber.
| Nutrient | Severity | Documented for | Replace with | Monitor |
|---|---|---|---|---|
| Magnesium | Significant | All 5 PPIs | Magnesium Glycinate | Serum magnesium or RBC magnesium |
| Calcium | Moderate | All 5 PPIs | Calcium | Serum calcium or bone density trend |
| Iron | Moderate | All 5 PPIs | Iron Bisglycinate | Ferritin + transferrin saturation |
| Vitamin B12 | Moderate | All 5 PPIs | Methylcobalamin | Serum B12 + methylmalonic acid |
Common PPIs questions.
Quick answers drawn from the tables above.
What supplements should I avoid with PPIs?
Across the class, 1 substance pairing is flagged to avoid or as a serious conflict, including Betaine HCL. The exact risk depends on which medication in the class you take, so check your specific drug's page and confirm with your prescriber.
Do all PPIs interact with supplements the same way?
No. Interactions are documented per drug, and the 5 PPIs in the database differ in how they are absorbed and cleared. The class table above shows which members carry each record; a drug without a record is undocumented, not proven safe.
Do PPIs deplete any nutrients?
Some medications in this class are documented to lower Magnesium, Calcium, Iron, and Vitamin B12 with long-term use; the depletion table on this page shows which specific drugs carry each record. Useful biomarkers to monitor include Serum magnesium or RBC magnesium, Serum calcium or bone density trend, and Ferritin + transferrin saturation. Ask your prescriber before adding a replacement supplement.
Is it safe to take Betaine HCL with PPIs?
NutriStack classifies the Betaine HCL and Omeprazole pairing as conflict: Betaine HCL is taken specifically to lower gastric pH, while omeprazole is taken to raise it. The two are pharmacodynamically opposed: betaine HCL only partially and... The interaction is documented for 2 of the 5 PPIs, and severity differs by drug. Always confirm with your prescriber.
Check your whole stack
See how your medication fits your supplements.
NutriStack screens your full routine for interactions and depletions, and updates the moment you change it.