Last updated: March 2026
How Much Does Diphenhydramine (Benadryl) Cost?
Cost Breakdown by Type
| Type / Procedure | Without Insurance | With Insurance |
|---|---|---|
| 25mg Tablets/Capsules OTC (100 count) | $4 – $10 | $4 – $10 |
| 12.5mg/5mL Liquid (children's) | $5 – $12 | $5 – $12 |
| Topical Cream 2% (1oz) | $5 – $15 | $5 – $15 |
What Affects the Cost
- Brand-name vs. generic availability
- Insurance formulary tier placement
- Pharmacy choice (retail vs. mail-order vs. Costco)
- Manufacturer savings cards and coupons
- Dosage and quantity prescribed
- Geographic location
Insurance Coverage
Typical coverage: OTC; inexpensive; prescription rarely needed
Most insurance plans use a tiered formulary: Tier 1 (generic) $0-$15 copay, Tier 2 (preferred brand) $25-$75, Tier 3 (non-preferred brand) $50-$150, Tier 4 (specialty) $100-$500+. Prior authorization may be required for certain medications. Step therapy may require trying cheaper alternatives first.
How to Save Money
- Always ask for generic when available — saves 50-90%
- Use GoodRx, RxSaver, or similar discount cards
- Costco pharmacy is open to non-members and often has lowest prices
- Mark Cuban's Cost Plus Drugs offers transparent low pricing
- Manufacturer patient assistance programs provide free medication to qualifying patients
- HSA/FSA funds can cover medication costs tax-free
Related Procedures & Costs
Frequently Asked Questions
Generic diphenhydramine costs $4 to $10 for a 100-count bottle, making it extremely affordable.
Diphenhydramine causes significant drowsiness, impairs driving, and has been linked to increased dementia risk with long-term use in elderly patients.
Diphenhydramine is not recommended for children under 2. For children 2 to 5, use the children's liquid with proper weight-based dosing.