TUDCA Dosage Guide: How Much Should You Take Per Day?

TUDCA (Tauroursodeoxycholic acid) has exploded in popularity over the last 5 years — going from a niche research chemical to a mainstream supplement found in every biohacker's stack.

But dosing TUDCA isn't always straightforward. The clinical doses used in studies for primary biliary cholangitis (the FDA-approved indication) are often much higher than what supplement users take for general liver support.

This guide will walk you through the clinical research, the typical supplement doses, when to take it, and how to cycle it.

What the Research Uses

FDA-Approved Clinical Dose (PBC):

· 13–15 mg per kg of body weight per day

· For a 70 kg (154 lb) adult: ~1,000–1,050 mg/day

Studied Doses in Research:

· NAFLD/NASH: 500–1,500 mg/day

· Insulin sensitivity: 1,500 mg/day

· Bile flow / general liver support: 250–750 mg/day

· Neuroprotection studies: 1,000–1,500 mg/day

Most over-the-counter TUDCA supplements come in 250 mg or 500 mg capsules, or in liquid form (like our TUDCA + NAC Drops at 250 mg/serving).

Common Supplement Doses by Goal

How to Take TUDCA

With or Without Food?

TUDCA is a bile acid, so it actually *benefits* from being taken with meals — particularly meals containing some fat. The presence of food triggers gallbladder contraction, which "uses" the bile acids in a coordinated way.

However, many people take it on an empty stomach first thing in the morning for convenience. This is also effective, as TUDCA is well-absorbed either way.

Liquid vs Capsule:

· **Liquid drops** (like our [TUDCA + NAC Drops](https://www.wellwholeshop.com/)) absorb faster and allow flexible dosing

· **Capsules** are more convenient for travel and precise dosing

· Both are bioavailable — choice is personal preference

Time of Day:

· **Morning** (with breakfast): most common, pairs well with morning supplements

· **Evening** (with dinner): good for those who take other liver support at night

· **Split doses** (morning + evening): better for doses >500 mg/day

Cycling TUDCA

Do you need to cycle TUDCA?

The honest answer: there's no strong evidence either way. TUDCA is a naturally occurring bile acid in your body (just at lower concentrations than the therapeutic doses used in supplements). Long-term use at supplement doses (250–750 mg/day) appears safe in the available research.

Common cycling protocols:

1. **No cycling** — Daily use at 250 mg/day indefinitely (most common)

2. **5 days on / 2 days off** — Mimics intermittent fasting philosophy

3. **8–12 weeks on / 4 weeks off** — Periodic reset approach

4. **Seasonal** — Used heavily in fall/winter, less in summer

For most people, daily use at 250–500 mg/day is a sensible baseline. Increase to 500–1,000 mg/day for specific therapeutic goals, then reassess after 8–12 weeks.

Stacking TUDCA with Other Supplements

TUDCA pairs well with:

· **NAC** — Combined antioxidant + bile flow support ([TUDCA + NAC Drops](https://www.wellwholeshop.com/) deliver both)

· **Milk thistle (silymarin)** — Traditional liver herb; complementary mechanisms

· **Alpha-lipoic acid (ALA)** — Universal antioxidant; supports liver detox

· **Phosphatidylcholine** — Cell membrane support

· **Magnesium** — Often depleted in liver stress

· **B vitamins** — Cofactors for liver detox pathways

Side Effects and Safety

At supplement doses (250–1,000 mg/day), TUDCA is generally very well tolerated. Reported side effects are rare and mild:

· Loose stools (most common, usually transient)

· Mild nausea (take with food if this occurs)

· Headache (uncommon)

Drug interactions:

· May interact with bile acid sequestrants (cholestyramine, colestipol)

· May affect absorption of fat-soluble vitamins (A, D, E, K) with very long-term high-dose use

· No known serious interactions at standard doses

Who should be cautious:

· Pregnant or nursing (insufficient research)

· Children (not studied in pediatric populations)

· People with active gallstones (consult doctor)

How Long Until You See Results?

Most people report subjective benefits (better energy, less bloating, improved digestion of fats) within 2–4 weeks. Objective markers (ALT, AST, GGT) typically improve within 8–12 weeks.

FAQ

Is 250 mg of TUDCA enough?

For general maintenance and bile flow support, 250 mg/day is sufficient. For therapeutic goals, 500 mg/day is more common.

Can I take 1,000 mg of TUDCA per day?

Yes, this is within the studied clinical range. Split into two 500 mg doses (morning and evening) for best absorption.

Is TUDCA safe long-term?

At supplement doses (≤1,000 mg/day), no significant safety signals have emerged in research. TUDCA is a naturally occurring bile acid.

Should I take TUDCA on an empty stomach?

Either way works. With food (especially fat) is slightly more physiologic.

Can TUDCA reverse fatty liver?

Studies show TUDCA can improve liver enzymes, insulin sensitivity, and steatosis markers in NAFLD. It's a useful tool but works best with diet and lifestyle changes.

Does TUDCA interact with medications?

Few known interactions. Talk to your doctor if you're on bile acid sequestrants or fat-soluble vitamin supplements.

Conclusion

For most people, 250–500 mg of TUDCA per day is the sweet spot for general liver support, bile flow, and cellular health. Higher doses (500–1,000 mg/day) are appropriate for specific therapeutic goals like elevated liver enzymes, fatty liver, or GLP-1 support.

Liquid formats (like our TUDCA + NAC Drops) make dosing flexible and absorption fast. Pair with NAC for comprehensive liver support that covers both bile flow and antioxidant defense.