Supplements and blood pressure medication.
Blood pressure medications fall into four common classes (ACE inhibitors like ramipril, ARBs like losartan, beta-blockers like bisoprolol, calcium channel blockers like amlodipine) plus diuretics like furosemide. Several supplements lower blood pressure on their own, which is sometimes useful and sometimes risky depending on baseline control.
The additive-BP-lowering supplements with the strongest evidence are magnesium, garlic extract, hibiscus, CoQ10 and beetroot/nitrate. On a well-controlled regimen these can be helpful; on a borderline-low BP they can tip into orthostatic hypotension. Potassium warrants special attention: ACE inhibitors and ARBs both raise potassium, so a potassium supplement (or a high-potassium multi) needs blood-level monitoring to avoid hyperkalaemia.
How we grade severity, choose what's in scope, and what we exclude.
Every call on this page is reasoned. We publish the full rubric for severity tiers, the medication inclusion logic, the evidence grades we accept, and what we deliberately leave out. About three thousand words. Worth reading once if you use this tool more than occasionally.
Read the full methodologyWant this checked across everything you take?
This page checks the pairs you enter. The personalised Distil report goes further:
- the same graded, cited interaction check across your whole stack, not just the pairs you thought to type in
- where your current routine may be leaving you short of your goals
- the evidence-backed compounds worth adding, and the ones worth dropping
It's a paid report: £79, or £49 for the first 25 customers. The interactions check is one section of it, and you can read a real one in full before you buy.
See a real sample reportSomething missing?
If a supplement or medication you take isn't in our autocomplete, tell us. We go through what people flag every week and add what's missing.