PortRx
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Targeted Gut + Microbiome Restoration

Your daily gut reset,
in three clean capsules.

BUTTYR™ delivers postbiotics, probiotics, prebiotics and gut-repair nutrients — without the mess of powders or the sugar of gummies.

3capsules daily
60servings / bottle
9clinical actives
180capsules
✦ Postbiotic Tributyrin ✦ No Sludge, No Sugar ✦ 5 Billion CFU Probiotics ✦ Gut-Barrier Support ✦ Rooted in Clinical Simplicity ✦ Third-Party Tested
The BUTTYR Difference

Gut health got complicated.
We made it a ritual you'll actually keep.

Most gut formulas ask you to choose — a probiotic here, a fiber there, a postbiotic you've never heard of. BUTTYR brings the science together in one considered daily dose, designed to feel as good as it works.

Three things, done well

What three capsules a day can do.

◍

Barrier Support

Tributyrin, L-Glutamine and Zinc Carnosine nourish the gut lining — the first line of defense for everything downstream.

❋

Microbiome Balance

Targeted probiotics plus prebiotic fibers feed the good bacteria, helping your inner ecosystem find its rhythm.

◇

No Sludge

No gritty powders to stir, no sugary gummies to ration. Three clean capsules, water, done — wherever your morning happens.

Inside Every Serving

Nine actives.
Nothing to hide.

Every ingredient is on the label at a dose you can read — chosen for evidence, not for the marketing.

See full Supplement Facts →
T
300–600 mg · CoreBiome®

Tributyrin

A postbiotic source of butyrate — the fuel your gut-lining cells crave most.

G
1000 mg

L-Glutamine

The primary amino acid that helps maintain and repair the intestinal wall.

Z
10–15 mg

Zinc Carnosine

A bound form of zinc studied for soothing and protecting the stomach lining.

Q
150 mg

Quercetin

A plant flavonoid that supports a calm, balanced gut response.

β
150–250 mg

Beta-Glucan (1,3/1,6)

Yeast-derived fiber that engages the gut's immune tissue.

I
300 mg

Inulin

A prebiotic fiber that feeds beneficial bacteria.

P
300 mg

Pectin

A soluble fiber that supports gentle, regular digestion.

M
200 mg

Marshmallow Root

A traditional mucilaginous botanical that coats and comforts.

℗
5 Billion CFU

Probiotic Blend

L. plantarum 299v + B. longum BB536 — two of the most-studied strains.

Capsules vs. The Rest

Why we chose capsules.

The Powder

Mix & hope
  • – Gritty texture, needs a shaker
  • – Hard to dose on the go
  • – Often masked with sweeteners

BUTTYR Capsules

Three & done
  • ✓ Precise, consistent dosing
  • ✓ Travel-ready, no prep
  • ✓ Zero added sugar
  • ✓ Actives protected to delivery

The Gummy

Tastes like dessert
  • – Added sugars & fillers
  • – Low active doses per piece
  • – Heat-sensitive, melts
BUTTYR on a calm morning counter
Our Philosophy

Rooted in
clinical simplicity.

We started Port Rx because gut health had become noise — endless powders, vague blends, and promises that didn't match the label. We wanted something different: a formula honest enough to read in full, and simple enough to actually take every day.

BUTTYR is our answer. Real doses of real actives, in a format that respects your morning. No proprietary smokescreens. No sludge. Just the science, distilled.

— The Port Rx Founders

Launching Soon

Be first to reset.

Join the waitlist for early access, founding-member pricing, and a little gut education along the way. 1,240 already waiting.

No spam. Unsubscribe anytime. We'll only email about BUTTYR.

Good Questions

The things people ask.

BUTTYR is made for anyone looking to support their gut barrier and microbiome as part of a daily routine — especially if bloating, irregularity, or general gut discomfort are on your mind. As with any supplement, check with your healthcare provider if you're pregnant, nursing, or managing a condition.
Three capsules daily — that's one full serving. Most people take them in the morning with water, with or without food. One bottle holds 180 capsules: a 60-day supply.
Gut support is cumulative. Some people feel lighter and more regular within the first couple of weeks; barrier and microbiome benefits build with consistent daily use over 4–12 weeks.
Capsules give precise, consistent dosing with zero added sugar or fillers, they travel anywhere, and they protect the actives until they're where they need to be — no shaker, no sludge.
We're in pre-launch now. Join the waitlist and you'll be first to know the launch date, with early access and founding-member pricing before we open to everyone.