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Your coach calculates your doses to the microgram. Your wearable tracks your recovery to the minute. But who is training your bile pathway?

If your mind has the discipline to programme every parameter but your body lacks the fluid flow to process it, your recovery is hitting a silent biological wall. Here is the physiological explanation for the brick sitting in your upper tract.

Today, logged
0530
Glutamine 5 g
0615
Session A, back squat 5 × 3
1200
Vitamin D3 2 drops
2130
Magnesium glycinate 400 mg
Kit bag open on a gym bench, supplements and a handwritten training log inside

You sit on the worn wooden bench of your local gym, staring down at your legs in black training shorts. Your phone is in one hand; the opened black canvas duffel rests on the floor between your feet. Inside, it is a cluttered, hyper-precise laboratory: metallic blister packs with capsules popped out, white plastic pill bottles, a compact silver digital scale, an insulin pouch, loose foil packets of single-use pre-workout. Beside the bag lies a crumpled sheet of paper covered in your own hand-scribbled ledger: morning weights, training sets, exact trainer-calculated supplement times.

You feel a quiet pride in that dedication. You are a self-made, high-earning man who built his life on demanding absolute precision from his operations, his team and his investments. You do not guess. You track.

You are losing your identity as the man who can get through any physical barrier.

Yet as you zip the bag, the familiar anxiety creeps in. You know that within thirty minutes of your recovery meal, that perfectly weighed grass-fed ribeye and organic rice, your upper stomach will swell so tight that your lifting belt becomes an active constraint.

You have skipped leg days because your gut was too bloated to brace under a squat. You have stopped morning runs with your sons because the impact felt like an oncoming digestive disaster. And you have sat awake at three in the morning in cold, silent frustration while your wife asks less and less of you, because she thinks you are simply running yourself down.

Your muscles are fully programmed. The machine processing the fuel is quietly failing you.

Lifter sitting on a bench struggling to latch a thick leather lifting belt over a bloated midsection
What you have already tried

The cupboard of shame

Why mass-market gut health has failed the high performer.

When your stomach first started sitting like a three-pound brick after training, you approached it the way you approach everything: you looked for the mechanism. Instead you were handed a loop of temporary patches, mass-market trends and good-news dead ends.

  • Round 1 The GP loopUltrasound clear. Stool tests showed no inflammation. Coeliac panel negative. You were diagnosed with a sensitive stomach, handed an IBS leaflet and told to keep a food diary, and felt the strange guilt of being disappointed by good news.Cost: four months
  • Round 2 The pharmacy patchesChewable antacids in the glovebox. A bottle on the nightstand. Anti-diarrhoeals taken just in case before long drives. You were silencing the alarm rather than putting out the fire.Cost: £12 a week, indefinitely
  • Round 3 The supplement cascade£79 a month for premium liquid probiotics, with a daily fridge reminder and no detectable change by day thirty. High-end enzyme blends taken before steak dinners like a talisman, while the brick formed anyway.Cost: £79 a month

Half-used tubs currently in the cabinet £150 +

None of it worked, because none of it targeted the right biology. Probiotics and enzymes act on your lower intestine. Your bottleneck is not in your colon. It sits upstream, in the gallbladder, where your body's most powerful digestive fluid can stall.

Hand reaching into a kitchen cupboard packed with half-used supplement tubs and bottles
The mechanism

Your macros are perfect. Your bile is sluggish.

To recover from high-volume training you eat dense, calorie-heavy meals: beef, whole eggs, avocado, clean oils. There is a strict rate limit on how much of that your body can use. Every gram of dietary fat must be emulsified by bile before pancreatic lipase can finish breaking it down.

When training volume is high and meals are heavy, the gallbladder works double-time to produce a sudden, concentrated stream of active bile. Where that pathway is neglected, the fluid pools, stagnates and thickens into a slow-moving sludge, and one meal creates two separate bottlenecks.

  • The nutrient lockD3, K2, CoQ10 and omega-3 do not dissolve in water. To cross the water-based mucous layer of the intestinal tract they must first be packed into microscopic carriers called micelles, and micelles cannot form without a concentrated release of active bile acids. A large share of the stack you weigh out every morning passes straight through unabsorbed.
  • The stomach brickWhere the gallbladder cannot release enough fluid to emulsify heavy fats, the meal sits undigested in the upper tract for hours, fermenting. That is the pressure, the bloat and the three-in-the-morning distress that stalls the week.

You do not have a broken gut. You have a fluid bottleneck.

Fat digestion, in order:
1 · bile released from the gallbladder
2 · fat emulsified into droplets
3 · pancreatic lipase breaks the droplets down
4 · micelles form and carry the result across

Step one gates every step after it.

TUDCA

Support the machine, not just the muscle

TUDCA (tauroursodeoxycholic acid) is a bile acid that supports the flow of bile at its source, upstream of the bottleneck, before a macro-dense meal ever reaches the lower intestine.

  • Supports active fluid flowTaken with food, it supports the bile release a heavy meal calls for, at the moment it is called for.
  • Supports micelle formationSupports the bile acid release your body needs to package, absorb and transport the D3, K2 and essential fatty acids you already pay for.
  • Training predictabilityThe bloat that interferes with bracing is the target. No trial in people who train exists to promise the belt latches on the same notch, which is exactly what the guarantee below is for.
  • The rest of your lifeClient dinners, long drives, Sunday runs with your sons, without planning the day around an unpredictable stomach. That is the outcome this page is aimed at, stated plainly rather than promised.
Recovery meal of ribeye, fried eggs and rice with an amber supplement bottle on the table
Dr.Primal TUDCA 500mg bottle on folded linen with two capsules beside it
The 90-day test

TUDCA 500mg

You have bought six gut-health products that did nothing, so your scepticism is earned and well calibrated. You do not want another expensive half-used tub in the cabinet. So do not take our word for it: run it against your heaviest recovery meals for thirty days.

  • Third party lab tested
  • Good Manufacturing Practice
  • Gluten free
  • Cruelty free
Details

Supplemental TUDCA helps support healthy bile flow, fat digestion, and normal liver function. Beyond digestion, TUDCA has also been studied for its role in cellular health, including its effects on cellular stress and mitochondrial function.

By supporting the systems involved in bile function and fat metabolism, TUDCA provides targeted support for healthy digestion, nutrient absorption, liver function, and overall cellular health.

What to Expect
  1. 0–2 Weeks TUDCA begins working on stagnant bile viscosity immediately upon ingestion. While complete flow restoration is a gradual, cumulative process, some users report experiencing early, partial relief from post-meal heaviness within the first 7 to 14 days.
  2. 2–4 Weeks Meals tend to sit differently. Fat-heavy food stops feeling like a decision, and many people report less bloating in the evening.
  3. 4 Weeks and Beyond Digestion steadies, with more consistent bowel habits and steadier energy after meals. If you started because of a blood panel, around week eight is a sensible point to retest.
Suggested Use

Take 1–2 capsules with food, or follow the recommendations of your healthcare professional.

If you are pregnant or nursing, speak with a qualified healthcare professional before use.

Ingredients
Supplement Facts
Serving Size: 2 CapsulesServings per Container: 30
Amount per Serving % Daily Value
Tauroursodeoxycholic Acid 500mg †
† Daily value not established

Other ingredients: Gelatin (capsule), rice flour

FAQs
What is TUDCA and what does it actually do?

TUDCA (Tauroursodeoxycholic Acid) is a naturally occurring, hydrophilic bile acid that thins out thick, stagnant bile upstream before it exits your stomach. By acting as your body’s natural “dish soap,” it emulsifies dietary fats so your enzymes can digest them—preventing raw fats from traveling downstream to ferment and inflate your midsection.

I’ve had my gallbladder removed / I have gallstones. Is this for me?

Without a gallbladder: Yes. Your liver now drips raw bile continuously instead of on-demand, leaving mealtimes chemically unprepared to process fats. TUDCA optimizes bile composition to ensure proper fat breakdown.

If you worry about gallstones: Thick, stagnant bile stasis is the primary precursor to stone crystallization. Actively thinning this sluggish fluid directly prevents the stasis that allows solid deposits to form.

I’ve already tried milk thistle, ox bile, enzymes, and probiotics. Why is this different?
  • Probiotics & Enzymes: Probiotics add bacteria to an already fermented downstream swamp, while supplemental enzymes fail because lipase cannot physically penetrate fat globules without thin bile prepping them upstream.
  • Milk Thistle: This is a gentle liver antioxidant that has zero mechanical thinning effect on thick biliary sludge.
  • Ox Bile: This is a crude, animal-sourced extract that is highly acidic and frequently causes burning, farmyard-tasting acid reflux. TUDCA is highly refined, gentle on the duodenum, and coaxes your system to thin its own bile.
Is it safe, and how long before I notice a difference?

Because TUDCA is an organic acid your body already recognizes, it is exceptionally gentle. Our formulation contains zero synthetic flow agents, silicon dioxide, or magnesium stearate to prevent duodenal irritation.

Restoring physical fluid mechanics is gradual. While initial digestive comfort often begins within 7 to 14 days, and many users report near instant relief, complete biliary flow normalization and systemic restructuring typically require 30 to 90 days of consistent daily mealtime use.

Trial Purchase
TUDCA 500mg

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