Top 7 liver supplements, tested and ranked. I spent around $500 across five months. Here's what actually moved my bloodwork.
My own ALT came back at 62. I have treated fatty liver for 15 years, and all my own doctor offered me was the same advice I had been handing patients for years: lose weight, cut alcohol, recheck in a year. Not one of us had ever asked the obvious question: why was no one talking about the one molecule the liver actually uses to defend itself, detoxify, and repair?
So I stopped assuming and started testing. Over five months I bought seven liver products, multi herb blends, drainage drops, direct glutathione, NAC capsules, a liposomal formula, and ran each for four weeks with a fresh blood panel in between. Total tab, including labs, around $500.
Below are all seven, ranked worst to best. The last one is the one I'm still taking.
Milk Thistle Liver Support Blend
Money Score
What works
- Headline milk thistle at 300mg (80% silymarin) matches the standard clinical reference
- Multi herb stack reads as comprehensive on the label (inositol, pueraria, wormwood, clove, methionine, turmeric)
- Aggressive Facebook and YouTube ad discounts, BOGO, and subscription pricing make it look like a no-brainer
What doesn't
- Silymarin and the supporting herbs work extracellularly; the oxidative damage is intracellular
- No NAC in most formulas (or trace methionine well under the cysteine equivalent your cell needs to build glutathione)
- Forty years of placebo-controlled trials show no statistically meaningful ALT or AST reduction in fatty liver patients
Milk thistle is the first thing every fatty liver guide recommends, and the modern version is almost always a blend like this: 300mg of silymarin headlining the label, then seven smaller-dose herbs underneath. I tried one of the most advertised versions for four weeks at the recommended serving. ALT after: 63. Silymarin is a large polyphenol. It scrubs free radicals in the bloodstream but doesn't cross into the hepatocyte at any meaningful concentration. The damage driving your ALT isn't out there in your serum. It's deep inside the cell, in the mitochondria, where glutathione gets depleted faster than the cell can replenish it. The blend doesn't fail because of dose. It fails because it never reaches the inside of the cell where the damage actually is.
Lymphatic Drainage Drops
Money Score
What works
- Sublingual format absorbs without GI passage
- Tastes herbal and earthy, easy to take
- Pleasant ritual, one dropper before breakfast
What doesn't
- Lymphatic drainage doesn't address oxidative liver damage
- Premise sounds biological but doesn't match the actual liver-cell mechanism
- Bloodwork unchanged after a full 28-day cycle
I bought these because my Facebook feed kept pushing them. The pitch: your liver's "drainage system" gets congested, and these drops flush it out. I took the recommended dose for four weeks. ALT after: 64. Identical to baseline. The mechanism is the problem. Lymphatic congestion has nothing to do with why hepatocytes leak under oxidative stress. "Drainage" feels like action, but it doesn't map to the cell biology of liver enzyme elevation.
Ritual Labs Happy Liver
Money Score
What works
- Real NAC at 500mg per serving, not a label sprinkle
- Fully disclosed doses across all three ingredients, no proprietary blend
- Third-party tested, clean ingredient profile, vegan capsule
What doesn't
- 500mg NAC is still under the 600-1,200mg clinical range for fatty liver
- Standard capsule means 4-9% bioavailability, around 35mg into circulation per dose
- Milk thistle still works extracellularly, doesn't reach the hepatocyte
Real NAC at half the clinical dose, milk thistle that works extracellularly, and choline at a real dose. I took two capsules daily for four weeks. ALT after: 57. A three point drop, which is about what 500mg of capsule-form NAC plus a clinical choline dose should produce. The question isn't whether it moves anything. It's whether the movement is worth the price. At $40-50 a bottle for sub clinical NAC absorption (~35mg into circulation per dose), the value math doesn't work. You're paying premium money for a three point ALT shift, when a properly dosed liposomal NAC will move it ten times further at the same price tier.
"ALT has been high for a while. Supplements from my doctor are doing nothing. All my doctor has told me is to lose weight, I feel that is not enough."
Liver MD by 1MD Nutrition
Money Score
What works
- cGMP-manufactured, third-party tested
- Tolerated cleanly; no GI issues
- Real milk-thistle content at a real dose
What doesn't
- NAC dose is far below the effective range
- Formula leans on familiar ingredients, not ones that actually move bloodwork
- Heavy advertising explains the brand recognition, not the science
If you've spent ten minutes on YouTube in the last year, you've seen this product. The formula is milk thistle, dandelion, turmeric, artichoke, beetroot, and a courtesy sprinkle of NAC well below therapeutic range. A perfectly fine multivitamin sold as a liver intervention. After four weeks my ALT was 62. The label is recognizable. The results aren't.
NOW Foods Glutathione 250mg
Money Score
What works
- Targets the actual depleted molecule (glutathione, the master antioxidant)
- No GI side effects, no sulfur burps
- Easy to take, no taste issues
What doesn't
- Glutathione is a tripeptide; digestion breaks it into amino acids before absorption
- Bloodwork unchanged after a full 28-day protocol
- Liposomal versions absorb slightly better but still poorly
The logic seems obvious: if my liver is short on glutathione, just take glutathione. I tried NOW Foods at 250mg daily for four weeks. ALT after: 63. No change. The problem is the molecule, not the brand. Glutathione is a tripeptide that gets broken back into amino acids in the stomach before it ever reaches the liver. NAC is the precursor your cells use to manufacture glutathione INSIDE the cell where it's actually needed. You're not delivering the product. You're feeding the factory.
What about liposomal or IV glutathione? Both get past digestion but hit the next problem: glutathione has to be inside the hepatocyte mitochondria to work. Liposomal carriers reach serum. IV peaks fast and clears in hours. Neither delivers sustained intracellular concentration where the enzyme actually functions. Letting your cells build their own glutathione still works better than every attempt to deliver it pre made.
Thorne NAC
Money Score
What works
- NSF-certified, used by professional sports teams
- Decades of quality-control reputation
- Clean single ingredient formula, no fillers
What doesn't
- Plain capsule; no delivery technology
- Same 4–9% bioavailability ceiling as the powder
- Two pills to hit 1,000mg, still under clinical 1,200mg
Thorne is one of the most credible names in the category. Their QC is excellent. The formulation is from a decade where capsule was the answer to every question. Two pills got me to 1,000mg of NAC and, on plain-capsule absorption math, probably under 100mg into circulation. ALT moved from 56 to 53. Respectable. Not state-of-the-art.
Orvia Labs Liposomal NAC
Money Score
What works
- Full clinical 1,200mg dose in the recommended serving
- Liposomal delivery (up to ~85% bioavailability vs. 4–9%)
- Zero sulfur burps; clean tolerability
- Third party lab tested for purity and potency
- Made in a GMP certified facility
What doesn't
- Newer brand; less institutional history than Thorne
- Not the cheapest option per bottle
This is the one I'm still taking. The afternoon crash I'd built my day around stopped coming, the fog I'd been blaming on my age lifted, and my husband asked what had changed before I'd told him I was trying anything. Eight weeks in, the bloodwork caught up: my ALT dropped from 56 to 31 and my AST from 44 to 26, back in normal range for the first time in years.
None of that is a coincidence. The tiredness and fog most people write off as age or stress are often the liver running low, and NAC rebuilds the glutathione it runs on so it repairs instead of just coping. Orvia Labs is the only one here that delivers it right: the full 1,200mg clinical dose, liposomal so it survives digestion and reaches the cell.
In a 2025 trial (NCT06105060) it was the only compound that lowered ALT and AST and healed the liver on imaging. Fatty liver is reversible, but only while it still is, and elevated enzymes are the window you can still act in. Your liver won't give you a second one.
All seven, side by side
Every product, every dose, every price, every absorption number, lined up.
| Rank | Product | NAC Dose | Delivery | Price | Bloodwork Δ |
|---|---|---|---|---|---|
| #7 | Milk Thistle Liver Blend Avoid |
None (or trace) | 8-herb capsule | ~$20-40 | No change |
| #6 | Lymphatic Drainage Drops Skip |
None | Sublingual tincture | ~$32-45 | No change |
| #5 | Ritual Labs Happy Liver Weak |
500mg | Capsule + MT blend | ~$40-50 | −3 ALT |
| #4 | Liver MD by 1MD Overhyped |
Token | Multi blend | $42–52 | No change |
| #3 | NOW Foods Glutathione Close |
None | 250mg capsule | ~$15-22 | 0 (digested) |
| #2 | Thorne NAC Respectable |
500mg/cap | Plain capsule | ~$26 | −3 ALT |
| #1 | Orvia Labs Liposomal NAC Winner |
1,200mg | Liposomal | $39.90 | −25 ALT · −18 AST |
What the industry doesn't tell you
Liver blends are a marketing structure, not a science one. A "blend" lets a brand list eight or ten exciting ingredients on the front of the bottle. Sometimes the doses are hidden under a "proprietary blend" total, more often they're disclosed but pinned far below the clinical research. Either way the math doesn't change. If a formula works, the dose is the entire point. It's what got studied, and what moved bloodwork in the trial. A blend that splits its budget across eight ingredients can't put any one of them at the dose that actually moves the liver.
Standard NAC wastes most of the dose. Oral NAC at 4–9% bioavailability means a 600mg capsule delivers somewhere between 24 and 54mg into circulation. The clinical trials on NAC and liver enzymes use 1,200mg of well absorbed NAC. Most NAC bottles on Amazon are a five cent capsule with a four dollar story.
Brand reputation is not formulation quality. A 30-year-old supplement company with great manufacturing standards can still sell a formula designed in 1998. Reputation tells you they won't poison you. It doesn't tell you the formula is current.
What I wish I'd known
- Get your bloodwork before and after, every time. ALT, AST, GGT. If a bottle won't move your numbers in four weeks, you'll have the receipts.
- Ignore the marketing words. "Cleanse" is meaningless. "Reset" is meaningless. "Restore" is the weakest word in the supplement aisle.
- Read the dose, not the front of the bottle. If the amount is buried inside a proprietary blend, assume you're being underdosed.
- Pay for delivery, not just ingredients. A clinical-dose ingredient with no absorption is an expensive way to do nothing.
If you want to run the same experiment on your bloodwork
I am not your physician. I am one internist with one set of labs and one strong opinion about which bottle on my shelf earned its place. Orvia Labs has a 90-day money-back guarantee, which means you can put your own ALT to the test and ask for your money back if the numbers don't move. That's the only test that matters.
See Orvia Labs Liposomal NACEditorial Note & Disclosure
This article contains affiliate links to one product (Orvia Labs); if you buy through them, Insider Health Report may earn a small commission at no extra cost to you. This does not influence the ranking, and Insider Health Report does not accept paid placement. The other six products were purchased at retail with my own money and are not affiliated.
Dr. Stevens's bloodwork numbers are her personal experience and are not typical. Individual response to any supplement varies based on diet, weight, medication, alcohol intake, and underlying conditions. Liver-enzyme values should always be interpreted by a licensed physician for your specific case. This article should not be construed as medical advice for any individual reader; it is one clinician's documented self test. Always talk to your doctor before starting or stopping any supplement.
All competitor brand names are the trademarks of their respective owners and are referenced for editorial comparison only, no affiliation is implied.