I tested 7 liver supplements on my own bloodwork. Only one actually worked. Five months, about $500, and one bottle that dropped my ALT from 56 to 31. I'll show you that one first, then the six that didn't move the needle.
My own ALT came back at 62. I have treated fatty liver for 15 years, and all my doctor offered me was the same advice I had handed patients for years: lose weight, cut alcohol, recheck in a year. So I stopped guessing and started testing, one bottle at a time, with a fresh blood panel between each. Here is the one I am still taking, and the six that wasted my money.
So I stopped assuming and started testing. Over five months I bought seven liver products, ran each for four weeks, and pulled a fresh blood panel between every one. Total tab, including labs, around $500. One bottle moved my numbers. I am putting it first, because it is the only one that earned the space.
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.
Before that bottle, I spent about $400 on six others, and ran each one for a full four weeks with bloodwork on both ends. Here is every one, the result it produced, and the exact reason it fell short.
"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."
All seven, side by side
Every product, every dose, every price, every absorption number, lined up.
| Rank | Product | NAC Dose | Delivery | Price | Bloodwork Δ |
|---|---|---|---|---|---|
| #1 | Orvia Labs Liposomal NAC Winner |
1,200mg | Liposomal | $39.90 | −25 ALT · −18 AST |
| #2 | Thorne NAC Respectable |
500mg/cap | Plain capsule | ~$26 | −3 ALT |
| #3 | NOW Foods Glutathione Close |
None | 250mg capsule | ~$15-22 | 0 (digested) |
| #4 | Liver MD by 1MD Overhyped |
Token | Multi blend | $42–52 | No change |
| #5 | Ritual Labs Happy Liver Weak |
500mg | Capsule + MT blend | ~$40-50 | −3 ALT |
| #6 | Lymphatic Drainage Drops Skip |
None | Sublingual tincture | ~$32-45 | No change |
| #7 | Milk Thistle Liver Blend Avoid |
None (or trace) | 8-herb capsule | ~$20-40 | No change |
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.