Last updated: March 2026
How Much Does Theophylline (Theo-24) Cost?
Cost Breakdown by Type
| Type / Procedure | Without Insurance | With Insurance |
|---|---|---|
| Theophylline ER 100mg Tablet | $8 – $15 | $0 – $5 |
| Theophylline ER 300mg Tablet | $10 – $20 | $0 – $8 |
| Theophylline ER 400mg Capsule | $12 – $25 | $3 – $10 |
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: Tier 1 generic — covered on most plans; requires blood level monitoring
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
Theophylline costs between $8 and $25 for a 30-day supply without insurance. It is available as an affordable generic medication.
Theophylline has a narrow therapeutic window requiring blood level monitoring and has many drug interactions. Newer inhaled medications are generally preferred for asthma and COPD.
Theophylline is a bronchodilator used for chronic asthma and COPD. It relaxes airway smooth muscle and may have mild anti-inflammatory effects.