Theophylline Toxicity Warning Signs
Notify your doctor if you take theophylline and develop any of the following:
- Worsening muscle twitching
- Worsening palpitations
- Rapid pulse


- Worsening abdominal pain
- Hallucinations:
- Visual hallucinations: seeing things that do not exist
- Auditory hallucinations: hearing sounds or voices that do not exist
- Repeated vomiting
- Confusion
- Fainting
- Seizures
Last Updated: Nov 5, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Theophylline Toxicity References
- Henderson JH, McKenzie CA, Hilton PJ, Leach RM. Continuous venovenous haemofiltration for the treatment of theophylline toxicity. Thorax. 2001 Mar;56(3):242-3. [11182020]
- Krieger AC, Takeyasu M. Nonconvulsive status epilepticus in theophylline toxicity. J Toxicol Clin Toxicol. 1999;37(1):99-101. [10078166]
- Ram FS, Jardin JR, Atallah A, Castro AA, Mazzini R, Goldstein R, Lacasse Y, Cendon S. Efficacy of theophylline in people with stable chronic obstructive pulmonary disease: a systematic review and meta-analysis. Respir Med. 2005 Feb;99(2):135-44. [15715180]