Trulance

How Does Trulance Work?

Trulance (plecanatide) is a guanylate cyclase-C (GC-C) agonist that works entirely within the gastrointestinal tract. After oral ingestion, plecanatide reaches the small intestine where it binds to GC-C receptors on the surface of intestinal epithelial cells. Trulance is optimally active at the acidic pH (5–6) of the proximal small intestine, making its action highly localized.

GC-C activation increases intracellular and extracellular concentrations of cyclic guanosine monophosphate (cGMP). Elevated cGMP stimulates the cystic fibrosis transmembrane conductance regulator (CFTR) ion channel, which allows chloride and bicarbonate to flow into the intestinal lumen. Water follows by osmosis, softening stool and accelerating bowel transit.

In IBS-C patients, elevated extracellular cGMP also reduces the activity of pain-sensing nerve fibers in the intestinal wall, which may explain Trulance's effectiveness in reducing abdominal pain — not just constipation. Plecanatide is negligibly absorbed systemically; plasma concentrations are undetectable at the recommended dose, explaining its minimal drug interaction profile.

How Hard Is It to Find Trulance in Stock?

As of 2026, Trulance is not listed on the FDA's official drug shortage database. Salix Pharmaceuticals continues to manufacture and distribute the drug without any reported supply disruptions. However, patients frequently encounter difficulty filling Trulance prescriptions despite the absence of an official shortage.

The challenges are structural: Trulance is a brand-only medication priced at $749–$830 per month retail, which causes pharmacies to manage inventory conservatively. Many smaller pharmacies don't stock it at all, and even large chains may only carry enough for their existing regular customers. Patients new to Trulance or changing pharmacies often face a 1–3 business day wait for a special order.

To find which pharmacies near you have Trulance in stock today, use medfinder — medfinder calls pharmacies on your behalf and texts you which ones can fill your prescription, saving you the time and frustration of calling around yourself.

Who Can Prescribe Trulance?

Trulance is not a controlled substance and has no DEA scheduling. As a result, any licensed healthcare provider with prescribing authority may write a Trulance prescription, including those in primary care and specialist settings. No special DEA waiver, certification, or specialty designation is required.

Common Trulance prescribers include:

• Gastroenterologists — most common specialists, especially for IBS-C and complex CIC cases
• Primary care physicians (PCPs) and internists — frequently manage CIC and IBS-C without specialist referral
• Nurse practitioners (NPs) and physician assistants (PAs) — in most states have full or collaborative prescribing authority for non-controlled medications

Trulance can also be prescribed via telehealth in most states since it is a non-controlled substance. Platforms like Teladoc and PlushCare offer virtual consultations with physicians who can evaluate GI symptoms and prescribe Trulance for appropriate patients, often with same-day appointments.

Is Trulance a Controlled Substance?

No. Trulance (plecanatide) is not a controlled substance. It has no DEA schedule, no addiction or abuse potential, and no special prescribing restrictions beyond a standard prescription. Any licensed physician, nurse practitioner, or physician assistant with prescribing authority can write a Trulance prescription.

Because it is not scheduled, Trulance prescriptions can be called in, faxed, e-prescribed, or written on paper — there are no special prescription pad requirements. Refills can be authorized normally; no quantity limits apply at the DEA level, though individual insurance plans may impose quantity limits as part of their coverage criteria.

Common Side Effects of Trulance

The most common side effects reported in Trulance clinical trials (incidence ≥2%, greater than placebo):

• Diarrhea (5% CIC patients; 4.3% IBS-C patients vs. 1% placebo)
• Nausea (1–2% incidence)
• Abdominal distension and flatulence
• Abdominal tenderness
• Nasopharyngitis and upper respiratory tract infection (1–2%)
• Urinary tract infection (1–2%)
• Dizziness (1–2%)

Serious Side Effects — Seek Medical Attention

• Severe diarrhea (boxed warning risk in pediatric patients): Occurred in 0.6% (CIC) to 1% (IBS-C) of adults in clinical trials. Stop Trulance and rehydrate if severe diarrhea develops.
• Dehydration: Secondary to severe diarrhea; monitor fluid intake especially in elderly or renally impaired patients.
• Elevated liver enzymes (ALT/AST): Rare; periodic LFT monitoring may be appropriate for long-term users.
• BOXED WARNING: Contraindicated in patients <6 years (risk of fatal dehydration); avoid in patients 6–17 years.

Final Thoughts on Trulance

Trulance (plecanatide) is a well-studied, FDA-approved medication for adults with chronic idiopathic constipation and irritable bowel syndrome with constipation. The American College of Gastroenterology endorses GC-C agonists like Trulance with a strong recommendation for IBS-C. Compared to its main competitor Linzess, Trulance offers the convenience of food-flexible dosing and a slightly lower diarrhea rate, which can matter for patients who are already managing GI symptoms.

Cost and access remain the primary barriers. Without insurance or manufacturer assistance, Trulance's retail price of $749–$830/month is prohibitive. Commercially insured patients should immediately enroll in the Salix savings card to reduce their cost to as little as $25/fill. Uninsured patients should inquire about the Salix Patient Assistance Program. No generic is expected before 2034, so planning for long-term cost management is essential.

If you're struggling to find Trulance at your local pharmacy, medfinder can help. medfinder calls pharmacies near you to identify which ones have Trulance in stock, then texts you the results — so you can focus on your health rather than hours of phone tag.