Beetroot Extract and medications.
Beetroot Extract is in the Distil supplement database, evidence Grade B. The page below lists every medication we have explicitly assessed it against.
Beetroot extract is standardised for dietary nitrate, which oral bacteria convert to nitrite and then to nitric oxide in low-oxygen vascular tissue. This is a separate route to the L-Arginine pathway, so the two can stack. Doses deliver 300 to 600mg of nitrate a day, with the acute effect peaking at two to three hours and at least four weeks needed for sustained blood pressure benefit. Evidence is Grade B for acute blood pressure and endothelial function, with meta-analyses showing systolic drops of around 5 mmHg, larger in people with hypertension; the chronic effect in adults over 50 looks weaker, so set expectations accordingly. The interaction angle matters: it adds to the effect of antihypertensives and may cause symptomatic low blood pressure early on, it shares a pathway with PDE5 inhibitors, and it needs cardiologist awareness alongside Class Ic antiarrhythmics like flecainide. Antibacterial mouthwash within two hours abolishes the effect. Harmless red urine is common. A solid blood-pressure adjunct, not a standalone fix.
Below are the 16 documented pairs we have explicitly assessed for Beetroot Extract: 16 amber. The pairs cluster around 3 mechanisms: Additive blood-pressure lowering, Additive vasodilation, and Haemodynamic interaction (narrow therapeutic window). Every call is cited to either a clinical reference (PMID) or the British National Formulary. Anything not listed here is either still to be assessed or beyond our database scope. The checker beneath surfaces assessments by medication, and the missing-item form at the bottom of the page routes any uncatalogued medication into our next curation pass.
Documented interactions
Additive blood-pressure lowering
Beetroot lowers blood pressure through the nitric oxide pathway. Amlodipine lowers blood pressure through calcium-channel blockade in vascular smooth muscle. Both mechanisms cause vasodilation, so the combined effect tends to be larger than either alone. Watch for dizziness on standing or ankle swelling, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway, and bisoprolol lowers blood pressure through beta-1 receptor blockade. Used together, the combined blood-pressure effect is mild but real. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway. Candesartan lowers it by blocking the angiotensin II receptor. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway, and clonidine lowers it by reducing the nerve signals that drive blood pressure up. Used together, the combined effect tends to be a little larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Beetroot lowers blood pressure through the nitric oxide pathway. Diltiazem lowers blood pressure through calcium-channel blockade and also slows the heart rate. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway, and guanfacine lowers it by reducing the nerve signals that drive blood pressure up. Used together, the combined effect tends to be a little larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Beetroot lowers blood pressure through the nitric oxide pathway. Lisinopril lowers it by blocking the angiotensin-converting enzyme. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway. Losartan lowers it by blocking the angiotensin II receptor. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway. Ramipril lowers it by blocking the angiotensin-converting enzyme. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing, especially in the first two weeks. If symptoms appear, tell your GP.
Beetroot lowers blood pressure through the nitric oxide pathway. Verapamil lowers blood pressure through calcium-channel blockade and also slows the heart rate. Used together, the combined blood-pressure effect tends to be larger than either alone. Watch for dizziness on standing in the first two weeks. If symptoms appear, tell your GP.
Additive vasodilation
Glyceryl trinitrate (GTN) is an organic nitrate that widens blood vessels by releasing nitric oxide. Beetroot acts on the same nitric oxide pathway by a different route. Taken together the blood-pressure-lowering effects can add up, so you may notice more dizziness, lightheadedness or a headache, particularly when a GTN spray or patch is working. This is additive rather than the dangerous amplified drop seen when nitrates are combined with erection medicines such as sildenafil. Keep your beetroot intake steady and tell your GP or cardiologist you take it.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Isosorbide mononitrate is an organic nitrate that widens blood vessels by releasing nitric oxide. Beetroot acts on the same nitric oxide pathway by a different route. Taken together the blood-pressure-lowering effects can add up, so you may notice more dizziness, lightheadedness or a headache. This is additive rather than the dangerous amplified drop seen when nitrates are combined with erection medicines such as sildenafil. Keep your beetroot intake steady and tell your GP or cardiologist you take it.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Nicorandil is an anti-anginal medicine that widens blood vessels partly by acting as a nitrate, releasing nitric oxide. Beetroot acts on the same nitric oxide pathway by a different route. Taken together the blood-pressure-lowering effects can add up, so you may notice more dizziness, lightheadedness or a headache. The combined effect tends to be mild, but tell your GP or cardiologist you take beetroot and keep your intake steady.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Sildenafil and beetroot both increase nitric-oxide-driven vasodilation, by different routes. Prescription organic nitrate medications (GTN spray, isosorbide) are strictly contraindicated with sildenafil because of severe blood pressure drops. Beetroot acts through the same downstream nitric oxide pathway but produces much lower nitric oxide levels than prescription nitrates. The theoretical risk is additive vasodilation and symptomatic low blood pressure. Tell your GP if you take both.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Tadalafil and beetroot both increase nitric-oxide-driven vasodilation, by different routes. Prescription organic nitrate medications (GTN spray, isosorbide) are strictly contraindicated with tadalafil because of severe blood pressure drops. Beetroot acts through the same downstream nitric oxide pathway but produces much lower nitric oxide levels than prescription nitrates. The theoretical risk is additive vasodilation and symptomatic low blood pressure. Tell your GP if you take both.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Haemodynamic interaction (narrow therapeutic window)
Flecainide is a Class Ic antiarrhythmic with a narrow therapeutic window and is sensitive to blood pressure and electrolyte changes. Beetroot lowers blood pressure through the nitric oxide pathway, which can stack with flecainide's haemodynamic profile. At standard supplement doses the combined effect tends to be mild, but the narrow safety margin of flecainide means you should let your cardiologist know if you start beetroot. Do not stack beetroot with hibiscus, garlic, L-citrulline and high-dose magnesium at the same time if you are on flecainide.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
What this list does not say. Pairs not flagged here are not implicitly safe. They are either not yet in our database, or fall outside our inclusion scope. Use the checker below to surface any medication, and submit a missing item if you take something we have not catalogued.
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