Costco Pharmacy · Price Comparison 2026
Sulfamethoxazole/Trimethoprim at Costco Pharmacy: ~$19
Costco pharmacy prices are competitive, but membership is required. Script Unlock lets you compare Costco against competing local pharmacies. When independent pharmacies compete on Script Unlock, the same Sulfamethoxazole/Trimethoprim (Sulfamethoxazole/Trimethoprim) is available from $3 — saving you $16 per fill.
Costco Pharmacy Price
~$19
typical cash price
Competing Pharmacies
From $3
when pharmacies compete
You Could Save
$16
vs Costco Pharmacy
Free · No account needed · Takes 30 seconds
Sulfamethoxazole/Trimethoprim Price at Other Pharmacies
CVS Pharmacy
Sulfamethoxazole/Trimethoprim typical price
~$26
vs $3 competing →
Walgreens
Sulfamethoxazole/Trimethoprim typical price
~$27
vs $3 competing →
Walmart Pharmacy
Sulfamethoxazole/Trimethoprim typical price
~$20
vs $3 competing →
Kroger Pharmacy
Sulfamethoxazole/Trimethoprim typical price
~$23
vs $3 competing →
Don't Pay Costco Pharmacy's $19 for Sulfamethoxazole/Trimethoprim
Pharmacies compete. You save $16. Takes 30 seconds.