Theophylline
Theo-24, Elixophyllin, and generics
Bronchodilator, methylxanthine
| C | 2 | No | Yes | No |
| Key |
- Other dosage forms may exist.
- Immediate release:
- Oral elixir/solution (Elixophyllin and generics): 80 mg/15 mL (473 mL); may contain up to 20% alcohol (alcohol-free preparations may be available)
- Sustained/extended release (see remarks):
- Tabs:
- Q12 hr dosing (generics): 300, 450 mg
- Q24 hr dosing (generics): 400, 600 mg
- Caps (Q24 hr dosing: Theo-24 and generics): 100, 200, 300, 400 mg
- Sustained release forms should not be chewed or crushed. Capsules may be opened and contents may be sprinkled on food.
- Tabs:
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Citation
Hughes, Helen K., and Lauren K. Kahl, editors. "Theophylline." Harriet Lane Handbook Harriet Lane Handbook, 23rd ed., Elsevier, 2024. Harriet Lane, www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309199/all/Theophylline.
Theophylline. In: Hughes HKH, Kahl LKL, eds. Harriet Lane Handbook Harriet Lane Handbook. Elsevier; 2024. https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309199/all/Theophylline. Accessed October 2, 2026.
Theophylline. (2024). In Hughes, H. K., & Kahl, L. K. (Eds.), Harriet Lane Handbook Harriet Lane Handbook (23rd ed.). Elsevier. https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309199/all/Theophylline
Theophylline [Internet]. In: Hughes HKH, Kahl LKL, eds. Harriet Lane Handbook Harriet Lane Handbook. Elsevier; 2024. [cited 2026 October 02]. Available from: https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309199/all/Theophylline.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Theophylline
ID - 309199
ED - Hughes,Helen K,
ED - Kahl,Lauren K,
BT - Harriet Lane Handbook
UR - https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309199/all/Theophylline
PB - Elsevier
ET - 23
DB - Harriet Lane
DP - Unbound Medicine
ER -

Harriet Lane Handbook

