What is larazotide acetate?
Larazotide acetate is a synthetic peptide of eight amino acids, also known by its development code AT-1001. “Acetate” refers to the salt form the peptide is supplied in, which is common for research peptides. Its design is related to a fragment of a protein from the bacterium Vibrio cholerae, and it has been studied for its interaction with the tight junctions between cells lining the gut.
What makes larazotide acetate unusual on a peptide site is its product form. Most peptides are broken down in the digestive tract and are made as injections. Larazotide was developed from the start as an oral product meant to act locally in the gut, and in clinical trials it was given as capsules. Research sellers follow the same pattern and sell larazotide capsules with the strength printed on the label. This page covers that form and its numbers only. It makes no claims about effects in people.
Can you mix larazotide with BAC water?
Searches for “larazotide bac water” usually come from people used to freeze-dried peptide vials. The direct answer: larazotide acetate is sold as an oral capsule, not a lyophilized injectable, so there is nothing to reconstitute. Bacteriostatic water exists to dissolve freeze-dried powder in a sealed vial for multiple-dose use. A capsule is a finished solid product.
With no vial mg and no water volume, there is no concentration to calculate and no U-100 syringe-unit math, which is why the calculator on this page is greyed out. If a listing offers larazotide as a powder in a vial with a suggestion to add BAC water, that is a different kind of product from the capsules the compound was developed as, and its label is the only information you have about what it contains. For what bacteriostatic water is actually for, read our BAC water explainer.
Larazotide acetate dosage: what this page can and can’t tell you
Every page on this site follows the same rule: we do arithmetic on an amount you already have, and we never set, suggest or check one. For injectable peptides that arithmetic turns mg into syringe units. For larazotide acetate dosage there is no conversion step, because the amount per capsule is stated by the manufacturer.
This page will not give a larazotide acetate dosage, a schedule, a frequency or a cycle, and nothing here should be read that way. Amounts and schedules used in clinical trials are dosing information, and we do not reproduce them. Those questions belong with the product labeling and a qualified professional.
Reading larazotide capsule labels: mcg vs mg
Larazotide capsules are labeled with a small per-capsule amount, and sellers do not all use the same unit. A search like “larazotide 250 mcg” is a label strength, and the same amount could appear on another product as 0.25 mg. That makes the unit the first thing to check.
- mcg per capsule: a common format for small amounts. The figure applies to one capsule; the bottle total is that figure times the count.
- mg per capsule: the same amount written in the larger unit, so the number looks a thousand times smaller.
- Salt form: labels may state the amount as larazotide or as larazotide acetate, which are not the same weight. Compare the exact wording on each label.
The unit fact that ties this together is 1 mg = 1,000 mcg. Always convert two labels to the same unit before comparing them. The mg to mcg conversion guide has a quick reference chart.
Larazotide vs injectable peptides on this site
Larazotide acetate is often listed next to peptides that people research for gut-related interest, such as KPV and BPC-157. Those are sold as freeze-dried vials, so they do use BAC water, and each has its own page with a mixing chart and a preselected calculator.
Larazotide is the exception: a peptide made as an oral capsule. If you are comparing products, keep the units separate. A vial page reports micrograms per syringe unit after mixing, while a larazotide label reports mcg or mg per capsule. The two figures cannot be entered into the same calculator, and we do not compare compounds for effectiveness or safety.
Is larazotide acetate FDA-approved?
No. Larazotide acetate is investigational and is not an FDA-approved drug. It reached late-stage clinical trials in celiac disease, and that Phase 3 program was stopped in 2022 without an approval. There is no approved larazotide product with labeled strengths or directions to compare against, and capsules sold online are generally labeled for research use.
Because it is an oral capsule rather than a reconstituted vial, larazotide acetate sits outside the calculators on this site. For peptides that are sold as freeze-dried powder and do need BAC water math, browse the peptide library, where each page has a mixing chart and a calculator with that compound preselected.
Larazotide Acetate FAQ
Can you mix larazotide with BAC water?
No. Larazotide acetate is sold as oral capsules, not a freeze-dried injectable vial, so there is nothing to reconstitute and no syringe-unit math.
Is larazotide acetate a peptide?
Yes. It is a synthetic peptide of eight amino acids, also known as AT-1001. Unlike most peptides, it was developed as an oral product.
Does this page give a larazotide acetate dosage?
No. This site does not set or suggest amounts, schedules or cycles. The strength per capsule is on the product label, and dosing questions belong with a qualified professional.
What does larazotide 250 mcg on a label mean?
It is the amount stated per capsule in micrograms. Since 1 mg equals 1,000 mcg, the same amount could be written as 0.25 mg on another label.
Is larazotide acetate FDA-approved?
No. Larazotide acetate is investigational and not FDA-approved. It was studied in clinical trials in celiac disease, and products sold online are generally labeled for research use.