Walmart Pharmacy · Price Comparison 2026
Diphenhydramine at Walmart Pharmacy: ~$11
Walmart offers some of the lowest chain prices via their $4/$10 generic program — but independent pharmacies can still beat it with competition. When independent pharmacies compete on Script Unlock, the same Diphenhydramine (Diphenhydramine Hydrochloride) is available from $2 — saving you $9 per fill.
Walmart Pharmacy Price
~$11
typical cash price
Competing Pharmacies
From $2
when pharmacies compete
You Could Save
$9
vs Walmart Pharmacy
Free · No account needed · Takes 30 seconds
Don't Pay Walmart Pharmacy's $11 for Diphenhydramine
Pharmacies compete. You save $9. Takes 30 seconds.