NutriStack
Lithium Orotate and Ramipril, a caution.
Ramipril reduces sodium reabsorption and lowers glomerular filtration, which causes the kidney to retain lithium. Case reports with ACE inhibitors describe lithium toxicity developing within 3 to 5 weeks of starting the medication, sometimes with serum lithium concentrations rising more than 30%. Lithium Orotate doses are smaller but use the same renal pathway and the margin to neurotoxicity is narrow, particularly in older adults or anyone who becomes dehydrated.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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At a glance
- Substances
- Lithium Orotate and Ramipril
- Pair type
- Caution
- Evidence (highest tier)
- Moderate
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Moderate evidence
Caution
What is happening. Ramipril reduces sodium reabsorption and lowers glomerular filtration, which causes the kidney to retain lithium. Case reports with ACE inhibitors describe lithium toxicity developing within 3 to 5 weeks of starting the medication, sometimes with serum lithium concentrations rising more than 30%. Lithium Orotate doses are smaller but use the same renal pathway and the margin to neurotoxicity is narrow, particularly in older adults or anyone who becomes dehydrated.
Mechanism. ACE inhibition causes natriuresis and a fall in GFR. Lithium is reabsorbed in the proximal tubule in parallel with sodium, so increased sodium loss and reduced filtration both raise fractional lithium reabsorption.
Recommendation. Avoid Lithium Orotate while taking ramipril. If you must combine them, keep the dose low, stay well hydrated, and ask your prescriber to check a serum lithium level after 1-2 weeks. Hold the supplement during any vomiting, diarrhea, or fever.
Sources (2)
- Finley PR, O'Brien JG, Coleman RW. Lithium and angiotensin-converting enzyme inhibitors: evaluation of a potential interaction. J Clin Psychopharmacol. 1996;16(1):68-71. PMID 8834421
- Masiran R, Abdul Aziz MF. Hypertensive bipolar: chronic lithium toxicity in patients taking ACE inhibitor. BMJ Case Rep. 2017;2017. PMID 28847993
Stack Score
How this pair moves the number.
Effect on the composite score
If both Lithium Orotate and Ramipril are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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