Supplements and Atorvastatin.
Atorvastatin, sold under the brand name Lipitor, is a statin: it lowers LDL cholesterol by inhibiting HMG-CoA reductase. Statins are the most-prescribed class in the UK.
Atorvastatin is the most prescribed medicine in England. Over 72 million dispensed items per year on NHSBSA records. It blocks HMG-CoA reductase, the enzyme that controls the speed of cholesterol synthesis in the liver, and most of the LDL drop happens at the lowest dose. The step from 20mg to 80mg is smaller than people assume. CYP3A4 metabolises atorvastatin in the gut and liver, so anything that inhibits 3A4 raises plasma levels and the myalgia risk depending on dose: grapefruit juice, clarithromycin, and at high doses curcumin and quercetin all sit on that pathway. Statin myopathy is uncommon but distinctive. Bilateral proximal muscle ache, sometimes with CK rising on a blood draw. Supplement interactions are mostly additive lipid lowering (berberine, plant sterols, red yeast rice) and additive myopathy risk with niacin at high doses. Neither is a reason to avoid combining; both are a reason to ask for a lipid panel sooner than your usual annual review.
Below are the 10 documented pairs we have explicitly assessed against Atorvastatin in the Distil database: 1 red, 7 amber, and 2 green. The pairs cluster around 7 mechanisms: Additive muscle toxicity, Additive lipid lowering, CYP3A4 induction, CYP3A4 inhibition, Additive HMG-CoA reductase inhibition, OATP transporter inhibition (reduced absorption), and Statin-induced CoQ10 depletion. Every call is cited to either a clinical reference (PMID) or the British National Formulary. Anything not on this list is either still to be assessed or beyond our database scope. The checker beneath surfaces assessments by supplement, and the missing-item form at the bottom of the page routes any uncatalogued supplement into our next curation pass.
Documented interactions
Last reviewed 14 June 2026. Each interaction below lists the evidence its assessment drew on: some rest on studies of the exact pair, others on mechanism evidence, where a citation may support one part of the reasoning rather than the exact combination. The evidence line on each entry says which.
Additive muscle toxicity
Red Does Red Yeast Rice interact with ?
Taking red yeast rice on top of atorvastatin means taking two statins at once, which may raise the risk of muscle damage including a serious form called rhabdomyolysis, so do not combine them without your GP's guidance. Red yeast rice naturally contains monacolin K, the same molecule as the prescription statin lovastatin.
Evidence: Well established across multiple human studies or interaction references.
Amber Does Niacin interact with ?
High-dose niacin combined with atorvastatin raises myopathy risk, though less than with simvastatin. If you take both, watch for unexplained muscle pain and tell your GP.
Evidence: Limited human data, based on case reports and a known mechanism.
Additive lipid lowering
Amber Does Berberine interact with ?
Berberine lowers LDL cholesterol and triglycerides on its own. Combined with atorvastatin the effect is additive, which is sometimes useful and sometimes pushes lipids lower than your GP intended. If you take both, ask for a lipid panel sooner than usual after starting.
Evidence: Limited human data, based on case reports and a known mechanism.
Green Does Beta-Glucan interact with ?
Oat beta-glucan lowers LDL cholesterol by trapping bile acids in the gut, a different route from how a statin works. Taking the two together is complementary, not a harmful clash, and the small extra cholesterol reduction is a benefit. We treat this pair as safe to combine.
Evidence: Supported by human study data.
CYP3A4 induction
Amber Does St John's Wort interact with ?
St John's Wort tends to reduce how well atorvastatin lowers your cholesterol by speeding up its breakdown. If you take St John's Wort with atorvastatin, tell whoever prescribes it, as they may need to recheck your cholesterol and adjust your dose. Do not change your atorvastatin dose yourself.
Evidence: Supported by human study data.
CYP3A4 inhibition
Amber Does Curcumin interact with ?
Curcumin may slow how the body clears atorvastatin via CYP3A4, which can raise atorvastatin levels and increase muscle and liver side-effect risk. We treat this as a watch-and-tell-your-GP pair rather than a hard avoid.
Evidence: Based on an established mechanism, with no direct study of this exact combination yet.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does Quercetin interact with ?
Quercetin may slow how the body clears atorvastatin via CYP3A4, which can raise atorvastatin levels. Watch for muscle pain or unusual fatigue and tell your GP if you take both regularly.
Evidence: Based on an established mechanism, with no direct study of this exact combination yet.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Additive HMG-CoA reductase inhibition
Amber Does Bergamot Extract (BPF / Bergavit40) interact with ?
Bergamot's active flavonoids inhibit the same liver enzyme atorvastatin targets, so combining them has overlapping mechanisms and no proven additive benefit. There is also a CYP3A4 surface that could slow atorvastatin clearance. Discuss with your GP before combining; in most cases the answer is to choose one or the other.
Evidence: Limited human data, based on case reports and a known mechanism.
OATP transporter inhibition (reduced absorption)
Amber Does Green Tea Extract interact with ?
Green tea extract may lower the amount of atorvastatin your body takes up, because both rely on the same cell transporter. This is suggested by reviews of related statins rather than by a direct atorvastatin study, so the size and importance of any effect are not yet clear. Keeping your green tea extract intake steady and telling your prescriber you take it is a reasonable precaution, particularly around a cholesterol check.
Evidence: Based on an established mechanism, with no direct study of this exact combination yet.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Statin-induced CoQ10 depletion
Green Does Coenzyme Q10 interact with ?
Statins do reduce plasma CoQ10 levels, but replacing it does not reliably ease muscle aches: four analyses of the trials split two against two, the two that measured muscle-damage enzymes found no change, and CoQ10 does not help people stay on their statin. We treat the pair as safe to combine, and it may be worth a trial if you already have statin muscle aches. If you have no symptoms, the evidence does not support taking it routinely.
Evidence: Well established across multiple human studies or interaction references.
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 (food-supplement interactions only; for drug-drug interactions, the BNF is authoritative). Use the checker below to surface any supplement, and submit a missing item if you take something we have not catalogued.
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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 methodologyA full supplement review, built around you, not a generic stack.
The free checker answers one interaction question at a time. A Distil report reviews the bigger picture: your goals, diet, medications, current supplements and any blood results you provide, then shows what appears worth keeping, changing, adding or leaving out.
- what your diet already covers, so you are not adding a capsule for something food is already handling
- which evidence-graded compounds are worth considering for your goals, and which were considered but left out
- what to keep, change or stop from what you already take, plus the order to introduce anything new
- how your medications and complete supplement stack fit together, with daily timing and a clear point for reassessment
The interaction check is one section of the full report. You also get the reasoning behind each recommendation and the evidence references used.
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