Zepbound Cost at Costco Canada: 2026 Price Guide

Zepbound cost at Costco Canada is the question I hear most from readers who already hold a prescription. The short answer: Costco has been the price leader so far. We have seen the 2.5 mg and 5 mg KwikPens go for $279 to $283 there, under Lilly's $300 list price [1]. Shoppers Drug Mart and Rexall ran $357 to $370 for the 5 mg pen in the same period, so your pharmacy choice can swing your yearly spend by more than a thousand dollars. Here is how the Costco route works, step by step.

Still comparing options? Three companion reads: the Zepbound Canada hub for the full picture, our cheapest Zepbound guide for every price lever in one list, and the monthly cost guide for dose-by-dose numbers.

How Much Does Zepbound Cost at Costco Canada in 2026?

Start with list prices, since every pharmacy number hangs off them. Lilly cut Canadian prices by more than 20% effective December 29, 2025 [1][2]. A 4-week KwikPen now lists at $300 for the 2.5 mg and 5 mg strengths, $420 for 7.5 mg and 10 mg, and $540 for 12.5 mg and 15 mg [1]. Costco Pharmacy tends to sell below list. For the starter strengths, we observed $279 to $283 per pen. For 7.5 mg and above, treat list price as the ceiling and call your warehouse pharmacy for the exact figure; we have not verified per-pharmacy prices at the higher doses.

The quick numbers:

• Costco observed price (2.5 and 5 mg): $279 to $283 per 4-week pen, our observation; confirm by phone.

• Lilly list price: $300, $420 or $540 depending on strength [1].

• Typical retail spread: roughly $280 to $370 for the starter strengths depending on pharmacy.

• Generic tirzepatide: none exists in Canada, and none is expected for years.

• Coverage: no provincial plan pays for weight-loss GLP-1s; about 31% of employer plans cover some of it [3].

Do You Need a Costco Membership to Use the Pharmacy?

No. Pharmacies inside Costco warehouses in Canada are open to the public, so you can walk in with a prescription and no membership card. Tell the greeter at the door you are headed to the pharmacy. A membership only matters if you want to shop the warehouse while you wait. Processes differ slightly by location, so a 30-second phone call ahead of your first visit smooths the whole thing out.

Costco vs Other Pharmacies: Zepbound Price Table

The numbers below mix Lilly's official list prices with what we observed at retail in early 2026 for the starter strengths. Treat the retail figures as typical spreads rather than quotes, and confirm with the pharmacy before you fill [1].

That gap is not small. The spread between Costco and the priciest chains reached about $90 a month at the starter strengths in our checks, which compounds toward $1,080 over a year if it held. For 7.5 mg and up we have no verified per-pharmacy figures, so use the $420 and $540 list numbers as your ceiling and phone around [1].

What Zepbound Costs Over Time as Your Dose Increases

Zepbound uses a fixed escalation schedule: 2.5 mg for the first 4 weeks, then 5 mg, then optional steps up to 15 mg, each held for at least 4 weeks [4]. Your monthly bill climbs the same ladder:

Two takeaways. First, the cheap phase is the start, so budget for the chance of $420 or more per month from month 3 or 4 onward [1]. Second, staying at the lowest dose that works for you is a legitimate medical strategy, and it happens to be the money-smart one. Talk to your prescriber before any dose decision, and read our side effects guide for why slower escalation often feels better too.

Costco Pharmacy Locations Across Canada

Costco runs warehouses with pharmacies in every province, from Vancouver and Calgary through Toronto, Ottawa and Montreal to Halifax and St. John's. Quebec locations operate under provincial pharmacy ownership rules, and pricing there can differ, so call first. Rural readers: the counter serves non-members, but a two-hour round trip eats the savings fast. In that case, weigh the Costco figure against a local independent pharmacy and against telehealth delivery before committing.

How to Save on Zepbound at Costco

• Enroll in myZepbound first: the Savings and Support Program at myzepbound.ca is open to Canadian residents. Without private insurance you can start at about $300 a month; with private coverage, Lilly says under $1 a day on average, around $30 a month [5]. Enroll online or at 1-833-382-8639.

• Check your workplace plan: about 31% of Canadian employer plans include some GLP-1 weight-loss coverage, usually behind prior authorization tied to a BMI of 30, or 27 with a related condition [3]. Our coverage guide has the paperwork playbook.

• Claim the tax credit: prescribed Zepbound counts toward the Medical Expense Tax Credit on line 33099 of your federal return [6].

• BC readers, watch PharmaCare: tirzepatide sits under formal review as submission 4166, and the outcome is pending [7].

• Stack it all: our savings card guide shows how the pieces fit together.

Zepbound vs Mounjaro at Costco

Same molecule, two labels. Mounjaro is tirzepatide for type 2 diabetes; Zepbound is tirzepatide for weight management and obstructive sleep apnea. The pens carry the same six strengths [4]. Why does the label matter at the counter? Insurance. Diabetes prescriptions open doors to public and private coverage that weight-loss prescriptions do not. Pricing for the two brands also moves separately, so if your diagnosis could support either label, that is a conversation for your doctor rather than a menu choice. Our Mounjaro cost guide covers that side of the fence.

Online Providers Cost Comparison

No family doctor, or yours will not prescribe weight-loss medication? Telehealth gets you the prescription, and you can still fill it at Costco. One accuracy note: MyRocky prescribes and fills Zepbound (tirzepatide), and their pharmacy ships to your door. Our MyRocky review covers the process end to end.

A Cheaper Option: Generic Semaglutide

If the math above stings, here is the release valve. There is no generic Zepbound, but generic semaglutide, the generic version of Ozempic injection, now sells for about $88 to $120 a month at Canadian pharmacies, Costco included. MyRocky offers it online at $149 a month all-in. Different molecule, same drug family, much smaller bill. Our generic semaglutide guide explains who it suits.

What to Bring to the Costco Pharmacy

• Your prescription: paper, fax or e-script from your prescriber, or ask them to send it ahead so the pen is ready when you arrive.

• Provincial health card: for the patient file, even though the province is not paying.

• Private insurance card: if your plan covers any portion, the pharmacy bills it at the counter.

• myZepbound enrollment details: have the program information ready so the discount applies on the first fill [5].

• A small cooler bag: the pens need refrigeration, so plan the trip home with that in mind [4].

Zepbound Stock Issues at Costco

Zepbound only reached Canadian pharmacies on July 9, 2025, and supply for a new drug takes time to smooth out [8]. If your warehouse is out: ask the pharmacy to order it, which often takes just a few days, ask them to check nearby locations, or have your prescriber send the script to a second pharmacy as a backup. Do not stretch doses or split pens to bridge a gap without talking to your prescriber first.

FAQ

How much does Zepbound cost at Costco Canada?

About $279 to $283 for the 2.5 mg and 5 mg 4-week pens in our observations, under the $300 list price [1]. Higher doses list at $420 and $540; confirm those with your local warehouse pharmacy.

Do I need a Costco membership to fill Zepbound?

No. Costco pharmacies in Canada serve non-members. Tell the greeter you are visiting the pharmacy and head straight there.

Is Costco cheaper than Shoppers Drug Mart for Zepbound?

In our observed window, yes, by a wide margin: $279 to $283 at Costco versus $357 to $370 at Shoppers for the 5 mg pen. Prices move, so phone both before deciding.

Can I use the myZepbound savings card at Costco?

Yes. Enroll at myzepbound.ca and present the program details when you fill. Without insurance the program brings Zepbound to about $300 a month; with private coverage, under $1 a day on average [5].

Does any provincial plan cover Zepbound at Costco?

No. As of mid-2026, no provincial public plan covers Zepbound, or any GLP-1, for weight loss. BC has tirzepatide under review [7]. Private plans are the exception: about 31% include some coverage [3].

Bottom Line

Costco is the strongest cash price we have observed for Zepbound in Canada right now: $279 to $283 for starter pens against a $300 list, with more uncertainty at higher doses. Stack the fill with the myZepbound card, your private plan if you have one, and the tax credit at filing time. Confirm every number by phone before you fill, and keep the receipts.

Which Zepbound doses are cheapest at Costco?

The lower strengths cost the least. Costco prices the 2.5 mg and 5 mg KwikPen around $279 to $283, just under Lilly's $300 list. The 7.5 mg and 10 mg pens list at $420, and 12.5 mg and 15 mg at $540. So your monthly cost climbs as you titrate up to your maintenance dose.

Can I transfer my Zepbound prescription to Costco?

Yes. If another pharmacy currently fills your Zepbound, you can ask Costco to transfer it. Bring your prescription details or have your old pharmacy send them over. Since Costco often prices the KwikPen below list, a transfer can trim your monthly cost. Call ahead to confirm the pen is in stock first.

This article is informational and is not a substitute for medical advice from your prescribing clinician. Always confirm pricing and coverage directly with the pharmacy and your insurer before filling.

Sources

• Eli Lilly & Co. cuts price of popular diabetes and weight-loss drugs in Canada, The Globe and Mail: Canadian list prices effective December 29, 2025.

• Eli Lilly cuts Canadian obesity drug prices, Benefits and Pensions Monitor: corroboration of the December 2025 price cut.

• Are weight-loss medications covered in Canada?, PolicyAdvisor: share of employer plans with GLP-1 weight-loss coverage.

• Zepbound Product Monograph, Eli Lilly Canada: dosing schedule, pen strengths and storage requirements.

• Zepbound KwikPen patient support and savings FAQ, Eli Lilly Canada: myZepbound program pricing and enrollment details.

• Lines 33099 and 33199, eligible medical expenses, Canada Revenue Agency: Medical Expense Tax Credit rules for prescription drugs.

• Tirzepatide (Zepbound) drug information sheet, submission 4166, Government of British Columbia PharmaCare: formal review status for public coverage in BC.

• Zepbound KwikPen (tirzepatide injection) now approved and available in Canada, Lilly Canada via Newswire, July 9, 2025: Canadian availability date.