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linaclotide (Linzess): Constipation Drug Side Effects & Dosage

What is linaclotide (Linzess)? What is linaclotide used for?

Linaclotide is an oral medication for the treatment of constipation. It is the first in a new class of drugs called guanylate cyclase-C agonists. It is used for relieving symptoms of irritable bowel syndrome (IBS) with constipation and for treating chronic constipation of unknown cause (idiopathic constipation).

Linaclotide works locally in the intestine (it is not absorbed into the body) to increase bowel movements and reduce pain. Linaclotide's effects are due to an increase in the production of a chemical called cyclic guanosine monophosphate which increases fluid secretion into the intestine and reduces the sensitivity of pain-sensing nerves. The FDA approved linaclotide in August 2012.

What brand names are available for linaclotide (Linzess)?


Is linaclotide (Linzess) available as a generic drug?


Do I need a prescription for linaclotide (Linzess)?


What are the side effects of linaclotide (Linzess)?

The most common side effects of linaclotide are:

Linaclotide should be stopped if patients develop severe diarrhea. Other important side effects include:

Rarely, patients may experience passage of blood from the rectum.

What is the dosage for linaclotide (Linzess)?

The dose for treating IBS with constipation is 290 mcg once
daily, and the dose for treating chronic idiopathic constipation is 145 mcg once
daily. Linaclotide should be taken on an empty stomach at least 30 minutes
before the first meal of the day.

Which drugs or supplements interact with linaclotide (Linzess)?

Drug interaction studies have not been conducted.


What is irritable bowel syndrome or IBS?
See Answer

Is linaclotide (Linzess) safe to take if I’m pregnant or breastfeeding?

Linaclotide has not been adequately evaluated in

It is not known whether linaclotide is excreted in
human milk. It is unlikely that linaclotide is excreted in
breast milk because
it is poorly absorbed and therefore undetectable in blood at recommended doses.

What else should I know about linaclotide (Linzess)?

What preparations of linaclotide (Linzess) are available?

Capsules: 145 and 290 mcg

How should I keep linaclotide (Linzess) stored?

Linaclotide should be stored at room temperature, 15 C to 30
C (59 F to 86 F). It should be kept in the original container and protected from
moisture. The dessicant (drying agent) should not be removed from the container.


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