Legal status · United States
Is Plecanatide legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Yes. Plecanatide is an approved medicine in the United States, classified as "FDA-approved, prescription only". Approval covers its labeled indication and it is supplied on prescription, not over the counter. Products labeled "research use only" fall outside that approval and the label does not make human use lawful. On the evidence, 2 human studies are cited on its profile.
Plecanatide in the United States at a glance
| Classification | FDA-approved, prescription only |
|---|---|
| Note | NDA 208745, approved 19 January 2017, now Salix. Adults only, for chronic idiopathic constipation and irritable bowel syndrome with constipation. Contraindicated under six years of age. |
| FDA approval status | FDA-approved on 19 January 2017 under NDA 208745, marketed as Trulance, for chronic idiopathic constipation and for irritable bowel syndrome with constipation in adults. Contraindicated in patients under six years of age because of the risk of serious dehydration, and its use is avoided in children aged six to under 18. Not approved for weight loss, for gut permeability or leaky gut, or for any general digestive health use. |
| Human studies cited | 2 of 3 citations on the profile |
| Reviewed | Sep 2026 |
Classification and note come from the Plecanatide profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
FDA has approved Plecanatide for at least one labeled indication, so a pharmaceutical-grade product exists in the United States and is dispensed on prescription.
- 02
Approval is indication-specific. Uses outside the label are a clinical decision for a prescriber, not something the approval itself authorizes.
- 03
Unlicensed online vials, including those labeled "research use only", are not the approved product and are not covered by the approval.
What Plecanatide is
An oral 16-amino-acid uroguanylin analogue approved in 2017 for chronic idiopathic constipation and irritable bowel syndrome with constipation. In its pivotal phase 3, 20.1 percent of patients on 3 mg were durable responders versus 12.8 percent on placebo, a 7.3 point absolute difference. Its claimed tolerability advantage over linaclotide has never been tested head to head.
Plecanatide is a 16-amino-acid peptide that differs from human uroguanylin, the body's own guanylate cyclase-C ligand, by a single amino acid. The FDA approved it on 19 January 2017 under NDA 208745 for chronic idiopathic constipation in adults, and later for irritable bowel syndrome with constipation.
Mechanism: Agonism at guanylate cyclase-C on the luminal surface of intestinal epithelial cells. Receptor activation raises intracellular cyclic GMP, which activates the cystic fibrosis transmembrane conductance regulator and drives chloride and bicarbonate into the gut lumen, pulling water with them.
Regulatory history: FDA-approved on 19 January 2017 under NDA 208745, marketed as Trulance, for chronic idiopathic constipation and for irritable bowel syndrome with constipation in adults. Contraindicated in patients under six years of age because of the risk of serious dehydration, and its use is avoided in children aged six to under 18. Not approved for weight loss, for gut permeability or leaky gut, or for any general digestive health use.
How FDA treats this kind of product
Approves prescription drugs by indication and polices unapproved products, including peptides sold online. Compounding pharmacies may prepare some compounds under a prescription when the FDA places them on a permitted bulk-substances category.
The classification above is the The Longevity Archive reading of U.S. Food and Drug Administration listings for Plecanatide at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
Plecanatide in other countries
Frequently asked questions
Is Plecanatide legal in the United States?
Yes. Plecanatide is an approved medicine in the United States, classified as "FDA-approved, prescription only". Approval covers its labeled indication and it is supplied on prescription, not over the counter. Products labeled "research use only" fall outside that approval and the label does not make human use lawful. On the evidence, 2 human studies are cited on its profile. Note: NDA 208745, approved 19 January 2017, now Salix. Adults only, for chronic idiopathic constipation and irritable bowel syndrome with constipation. Contraindicated under six years of age.
Can I buy Plecanatide in the United States?
Only with a prescription. Plecanatide is classified as "FDA-approved, prescription only" in the United States, so it is dispensed by pharmacies against a prescription for its approved indication. Buying it from unlicensed online sellers or as a "research chemical" is outside that system and carries no regulatory protection. Note: NDA 208745, approved 19 January 2017, now Salix. Adults only, for chronic idiopathic constipation and irritable bowel syndrome with constipation. Contraindicated under six years of age.
Is Plecanatide FDA approved?
Yes. FDA status: FDA-approved on 19 January 2017 under NDA 208745, marketed as Trulance, for chronic idiopathic constipation and for irritable bowel syndrome with constipation in adults. Contraindicated in patients under six years of age because of the risk of serious dehydration, and its use is avoided in children aged six to under 18. Not approved for weight loss, for gut permeability or leaky gut, or for any general digestive health use.. Current US classification: "FDA-approved, prescription only". On the evidence, 2 human studies are cited on its profile.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Plecanatide live on its compound profile.
Plecanatide profileThis page is general information about the regulatory status of Plecanatide in the United States, current as of Sep 2026. It is not legal advice, and classifications change; check U.S. Food and Drug Administration directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.