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We offer competitive pricing on all our medications. Find a lower price? We'll match it from any verified Canadian online pharmacy! Know More
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Sign in or create a new account.
Upload your prescription.
Complete your purchase by processing the payment.
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Constella is a prescription medication that contains linaclotide as its active ingredient. It is used for the treatment of moderate to severe irritable bowel syndrome with constipation (IBS-C) in adults. Constella belongs to a class of medicines called guanylate cyclase-C (GC-C) agonists. It works locally in the intestines by increasing fluid secretion and accelerating bowel movements, which helps relieve constipation and reduce abdominal pain. Constella is available only with a valid prescription and should be used under medical supervision.
| Brand Name | Constella |
|---|---|
| Generic Name | Linaclotide |
| Drug Class | Guanylate Cyclase-C (GC-C) Agonist |
| Form | Oral capsules |
| Strengths Available | 290 mcg (EMA-approved for adults with IBS-C; other strengths such as 72 mcg and 145 mcg may be available in Canada or other countries for different indications). |
| Constella Use | IBS-C, chronic idiopathic constipation (CIC) in adults. |
| Pediatric Use | Pediatric use varies by country. In the EU, linaclotide was historically not recommended in patients under 18 years due to dehydration risk. Always confirm country-specific labeling. |
| Common Side Effects | Diarrhea, abdominal pain, flatulence, bloating |
| Storage | Store at room temperature (68–77°F / 20–25°C); protect from moisture |
| Prescription Required | Yes |
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Below are the important risks and safety warnings that patients should understand before starting their treatment with Constella capsules.
Constella should not be used in patients with:
Before starting Constella, a healthcare provider should:
This is not a complete list of Constella side effects. If you notice other adverse reactions, report them to your doctor immediately.
| Category | Adverse Effects |
|---|---|
| Constella Very Common Side Effects | Diarrhea (most frequent) |
| Common Side Effects | Abdominal pain, Flatulence (gas), Abdominal distension/bloating, Headache |
| Uncommon Side Effects | Vomiting, Upper abdominal pain, Gastroesophageal reflux disease, Fecal incontinence |
| Rare Side Effects | Hypersensitivity reactions (rash, urticaria, swelling) |
| Serious Reactions (clinical concern) | Severe diarrhea leading to dehydration & electrolyte imbalance; may require discontinuation |
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Constella contains linaclotide, a guanylate cyclase-C (GC-C) receptor agonist that works locally in the intestine. After oral administration, linaclotide binds to GC-C receptors on the luminal surface of the intestinal epithelium. This activation increases intracellular and extracellular levels of cyclic guanosine monophosphate (cGMP). The rise in cGMP leads to:
Linaclotide acts locally within the gastrointestinal tract and has minimal systemic absorption.
Constella overdose experience is limited. There is no specific antidote for Constella (linaclotide) overdose; treatment is supportive and symptomatic.
If a Constella overdose is suspected, immediate medical attention is required. Patients should contact their provider or seek emergency care promptly.
Constella (linaclotide) dosing should be individualized and monitored by a healthcare provider.
| Dosage Element | Guidance |
|---|---|
| Recommended Dose | 290 micrograms (mcg) once daily (EMA-approved for adults with IBS-C; other strengths may be available in Canada for different indications) |
| Treatment Evaluation | If symptoms have not improved after 4 weeks, your doctor may reassess the benefit of continuing treatment |
| Duration of Treatment | Continued treatment may be considered in patients who respond; long‑term use may be appropriate under medical supervision |
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Constella and Linzess contain the same active ingredient, linaclotide. They are marketed under different brand names in different countries. Although the active ingredient and mechanism of action are the same, approved indications and available strengths may vary by country.
No clinically significant drug interactions have been identified because Constella (linaclotide is minimally absorbed from the gastrointestinal tract and acts locally within the intestine. The primary clinical concern is severe diarrhea, which can reduce the efficacy of other oral medications. Physicians should monitor patients and adjust therapy if absorption issues are suspected.
If Constella (linaclotide) is not effective or is not available in your region, several alternative medications are available. Your provider will choose the most appropriate option based on your symptoms, medical history, and response to previous treatments.
Many patients in the U.S. choose to buy Constella from Canada because prescription medications are often significantly more affordable than U.S. retail pharmacy prices. For individuals managing treatment, ordering through a licensed Canadian pharmacy can provide meaningful cost savings without compromising quality or safety.
At Polar Bear Meds, patients can buy Constella online through a trusted network of licensed Canadian and international pharmacies that follow strict regulatory and dispensing standards. Every order requires a valid prescription from a licensed doctor or healthcare provider to ensure safe and appropriate use.
When you order Constella from Canada through Polar Bear Meds, you may benefit from:
The information provided about Constella is for educational purposes only. Polar Bear Meds does not replace medical advice, diagnosis, or treatment. Constella is a prescription medication and should be used only under the supervision of a licensed healthcare provider. Always consult your provider before starting or discontinuing any medication. Approved uses, dosing recommendations, and available strengths may vary by country. Always follow the prescribing information provided with your medication.
Learn more about Constella and related topics

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