Liver support and “hepatoprotection”
Umbrella query «protect the liver» during drug therapy, after heavy meals or for routine prevention. There is no evidence base for routine supplement use «for the liver» in people without diagnosed liver disease: AASLD and EASL do not recommend hepatoprotectants as a class.
4 drugs
Also known as: Hepatoprotection, Liver protection, Liver health supplements
Marketing claims without evidence base
The drug is promoted for these uses outside international guidelines. Each entry below is analyzed against AEMPS, FDA, EMA, Cochrane and major RCTs.
- DAcetylcysteineNot recommended · Mucolytic; paracetamol overdose antidote; glutathione precursorAcetylcysteine is a mucolytic that thins mucus, and in high intravenous doses it works as an antidote for paracetamol poisoning. It is often marketed as a supplement for "liver support" and liver protection in healthy people. There is no convincing benefit for this use: the evidence that regular intake protects the liver or improves its function outside paracetamol overdose is lacking. What actually helps liver health is avoiding alcohol, keeping a healthy weight, hepatitis vaccination, and treating any underlying condition with your doctor. Do not take acetylcysteine instead of treatment with proven benefit – that can mean missing the care you need.
- DAlpha-lipoic acid (thioctic acid, ALA)Not recommended · Antioxidant; cofactor of pyruvate and α-ketoglutarate dehydrogenaseAlpha-lipoic acid (thioctic acid, ALA) is an antioxidant that supplements and ads promote as a "liver support" or hepatoprotective agent. Studies have not shown convincing benefit for this use, and there is no good evidence base for protecting liver cells or supporting liver function. What actually helps depends on the cause of liver disease, such as stopping alcohol, losing weight in fatty liver disease, or treating viral hepatitis, so discuss the approach with your doctor. The substance is harmless in this role
- DGlutathioneNot recommended · Tripeptide antioxidant (γ-glutamyl-cysteinyl-glycine); cofactor of glutathione S-transferaseGlutathione is an antioxidant the body makes on its own; in supplements and IV drips it's marketed for "liver protection." Taken from outside, it hasn't shown clear benefit for the liver – there's no solid evidence for this use. The substance itself is harmless in this role. When the liver really is at risk, the approaches with actual data help: removing the cause of damage (alcohol, liver-toxic drugs), treating viral hepatitis, and managing weight and metabolism in fatty liver disease. Don't use glutathione in place of that treatment, or you may lose valuable time.
- FEnoxoloneNot recommended · Plant-derived anti-inflammatory agent, a liquorice root derivativeLiquorice and its derivatives are sold as «liver protection»: glycyrrhizin and glycyrrhetinic acid go into supplements with a promise to restore liver cells and remove inflammation. There is no evidence base for that use. The EMA HMPC monograph on liquorice root recognizes only traditional use for cough and stomach discomfort, limits the course to 4 to 6 weeks outright, and names exceeding the dose as a source of pseudohyperaldosteronism. For hepatoprotection liquorice appears in no European recommendation. Something else matters more: in people with liver disease, edema, sodium retention and potassium loss are more dangerous than in healthy people, and that is exactly what liquorice produces. If a «liver» supplement with liquorice or enoxolone was recommended to restore the liver, consider seeking a second opinion.
How to read tiers A–F
Evidence tiers belong to the drug-indication pair, not to the drug as a whole: the same substance can be A for one condition and F for another.
- AStrong evidence – first or second line in international guidelines
- BRecommended in selected cases
- CStudy data contradict each other
- DBenefit not proven, no documented harm
- FDocumented harm, or risk without benefit