Active Shortage

NAT-MONTELUKAST

NATCO PHARMA (CANADA) INC

This is a national manufacturer shortage report. It does not confirm whether the product is unavailable at your local pharmacy — call ahead or ask your pharmacist.

Quick answers

Is there a shortage of NAT-MONTELUKAST in Canada?

Yes. NAT-MONTELUKAST 4MG has an active shortage reported to Health Canada (last updated June 3, 2025).

When will NAT-MONTELUKAST be available again?

The manufacturer's estimated resolution date is December 31, 2026. This is an estimate and can change; follow this page to get an email when the status changes.

Can I still get this?Possibly — same-ingredient product records found

StatusActive Shortage

Same-ingredient products on file6 products · 4 same form & route

Expected resolution~2 months remaining (estimate)

Affected strength4MG

Report last updated2025-06-03

Checked by MedShort2026-11-13

Other Products Containing the Same Active Ingredient

These are other Health Canada-approved human drug products containing the same active ingredient, not currently reported in shortage. Strength, dosage form, and route can still differ — ask your pharmacist whether any of these are appropriate for you. This isn't a guarantee of current stock.

Closest Matches

TEVA-MONTELUKAST

TEVA CANADA LIMITED

4MG · DIN 02355507

Same strengthSame dosage formSame routeNo current shortage

Compare these two →

PMS-MONTELUKAST

PHARMASCIENCE INC

4MG · DIN 02354977

Same strengthSame dosage formSame routeNo current shortage

Compare these two →

Other Products

SINGULAIR

ORGANON CANADA INC.

5MG · DIN 02238216

Different strengthSame dosage formSame routeNo current shortage

Compare these two →

SANDOZ MONTELUKAST

SANDOZ CANADA INCORPORATED

5MG · DIN 02330393

Different strengthSame dosage formSame routeNo current shortage

Compare these two →

MAR-MONTELUKAST

MARCAN PHARMACEUTICALS INC

10MG · DIN 02399997

Different strengthDifferent dosage formSame routeNo current shortage

Compare these two →

RIVA-MONTELUKAST FC

LABORATOIRE RIVA INC.

10MG · DIN 02398826

Different strengthDifferent dosage formSame routeNo current shortage

Compare these two →

What this means

Does this mean my pharmacy is out of stock?

Not necessarily — a national shortage doesn't mean every pharmacy has run out. Some locations may still have stock, especially of a specific strength or pack size.

What should I do?

Contact your pharmacy before your current supply runs low, and ask your pharmacist about next steps if they're out.

Estimated Resolution

2026-12-31

~2 months remaining (estimate)

This is the manufacturer's estimated date, not a guarantee — actual resolution may come earlier or later.

Have you checked a pharmacy recently?

No community reports yet — be the first to share what you found.

Community reports are not verified by a pharmacy and may reflect a small sample size. This is not a guarantee of current stock.

DIN

02522101

Strength

4MG

Dosage Form

TABLET (CHEWABLE)

Route

ORAL

Active Ingredient

MONTELUKAST

Tier

Unrated

Last Updated

2025-06-03

Reason for Shortage

Other (Please describe in comments)

Source

View original report on healthproductshortages.ca ↗

Other Products from NATCO PHARMA (CANADA) INC

Other Health Canada-approved products made by the same manufacturer — not necessarily related to this shortage, and not necessarily in shortage themselves.

250MG · DIN 02494132

1MG · DIN 02417855

5MG · DIN 02492822

2.5MG · DIN 02492814

100MG · DIN 02496895

25MG · DIN 02496887