THEOPHYLLINE ANHYDROUS

N/A

Manufactured by Westminster Pharmaceuticals, LLC

36,206 FDA adverse event reports analyzed

Last updated: 2026-04-14

About THEOPHYLLINE ANHYDROUS

THEOPHYLLINE ANHYDROUS is a medication tracked in the FDA Adverse Event Reporting System (FAERS), manufactured by Westminster Pharmaceuticals, LLC. The most commonly reported adverse reactions for THEOPHYLLINE ANHYDROUS include DYSPNOEA, ASTHMA, PNEUMONIA, WHEEZING, VOMITING. This page provides a comprehensive breakdown of reported side effects, safety signals, patient demographics, and AI-powered safety analysis for THEOPHYLLINE ANHYDROUS.

Top Adverse Reactions

DYSPNOEA2,313 reports
ASTHMA1,967 reports
PNEUMONIA1,341 reports
WHEEZING1,315 reports
VOMITING1,113 reports
COUGH1,069 reports
DRUG HYPERSENSITIVITY823 reports
DRUG INEFFECTIVE776 reports
MALAISE765 reports
PAIN708 reports
OEDEMA667 reports
NAUSEA648 reports
CHEST PAIN642 reports
CHRONIC OBSTRUCTIVE PULMONARY DISEASE635 reports
DIZZINESS492 reports
FATIGUE489 reports
PRODUCTIVE COUGH454 reports
CONDITION AGGRAVATED452 reports
PYREXIA446 reports
THERAPEUTIC PRODUCT EFFECT INCOMPLETE427 reports
OFF LABEL USE422 reports
CHEST DISCOMFORT399 reports
HEADACHE395 reports
RESPIRATORY TRACT INFECTION393 reports
DRUG INTERACTION391 reports
HYPERTENSION388 reports
DEATH370 reports
ANXIETY365 reports
TOXICITY TO VARIOUS AGENTS361 reports
WEIGHT DECREASED361 reports
DIARRHOEA360 reports
FALL352 reports
ASTHENIA347 reports
DEPRESSION322 reports
ATRIAL FIBRILLATION320 reports
LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES320 reports
ARTHRALGIA311 reports
PAIN IN EXTREMITY307 reports
LOWER RESPIRATORY TRACT INFECTION306 reports
WEIGHT INCREASED302 reports
OBSTRUCTIVE AIRWAYS DISORDER281 reports
INSOMNIA260 reports
DYSPNOEA EXERTIONAL259 reports
GASTROOESOPHAGEAL REFLUX DISEASE256 reports
NASAL CONGESTION250 reports
CARDIAC FAILURE CONGESTIVE249 reports
RESPIRATORY FAILURE248 reports
TREMOR246 reports
HYPOTENSION242 reports
ABDOMINAL PAIN241 reports
NASOPHARYNGITIS240 reports
SLEEP DISORDER DUE TO A GENERAL MEDICAL CONDITION237 reports
TACHYCARDIA234 reports
FULL BLOOD COUNT ABNORMAL231 reports
OVERDOSE231 reports
SINUSITIS227 reports
RASH224 reports
SOMNOLENCE223 reports
BRONCHITIS220 reports
BACK PAIN218 reports
BLOOD PRESSURE INCREASED214 reports
ANAEMIA202 reports
OEDEMA PERIPHERAL200 reports
CONSTIPATION195 reports
MYOCARDIAL INFARCTION194 reports
NASAL OEDEMA194 reports
INFLUENZA191 reports
DECREASED APPETITE188 reports
PRURITUS185 reports
RHINORRHOEA183 reports
HEART RATE INCREASED180 reports
DIABETES MELLITUS179 reports
HYPERSENSITIVITY178 reports
OSTEOPOROSIS176 reports
UPPER RESPIRATORY TRACT INFECTION176 reports
OXYGEN SATURATION DECREASED171 reports
LUNG DISORDER168 reports
HYPOKALAEMIA167 reports
PRODUCT DOSE OMISSION ISSUE166 reports
SEPSIS166 reports
GAIT DISTURBANCE165 reports
STRESS163 reports
RESPIRATORY DISORDER162 reports
SLEEP APNOEA SYNDROME162 reports
INTENTIONAL PRODUCT MISUSE158 reports
CONFUSIONAL STATE157 reports
GOUT157 reports
ABDOMINAL DISTENSION155 reports
DEHYDRATION155 reports
RENAL FAILURE155 reports
GENERAL PHYSICAL HEALTH DETERIORATION154 reports
INFECTION154 reports
PALPITATIONS153 reports
DEPRESSED MOOD152 reports
SLEEP DISORDER152 reports
URINARY TRACT INFECTION149 reports
FEELING ABNORMAL146 reports
MUSCLE SPASMS145 reports
CATARACT144 reports
RALES144 reports

Report Outcomes

Out of 11,980 classified reports for THEOPHYLLINE ANHYDROUS:

Serious 81.6%Non-Serious 18.4%

The FDA classifies an adverse event as “serious” if it results in death, hospitalization, disability, congenital anomaly, or requires intervention to prevent permanent damage.

Demographics Breakdown

Reports by Sex

Female6,594 (59.2%)
Male4,489 (40.3%)
Unknown56 (0.5%)

Reports by Age

Age 65706 reports
Age 68296 reports
Age 61289 reports
Age 69263 reports
Age 80262 reports
Age 70261 reports
Age 60243 reports
Age 72229 reports
Age 67222 reports
Age 75220 reports
Age 62217 reports
Age 64206 reports
Age 78199 reports
Age 73188 reports
Age 76188 reports
Age 74185 reports
Age 56184 reports
Age 71183 reports
Age 66171 reports
Age 77167 reports

Demographics reflect voluntary FDA adverse event reporting patterns and may not represent the full patient population.

Frequently Asked Questions

How many FDA adverse event reports are associated with THEOPHYLLINE ANHYDROUS?

This profile reflects 36,206 FDA FAERS reports that mention THEOPHYLLINE ANHYDROUS. Reporting is voluntary and does not prove that the drug caused any listed event.

Which adverse reactions are most often listed for THEOPHYLLINE ANHYDROUS?

Frequently reported terms in FAERS include DYSPNOEA, ASTHMA, PNEUMONIA, WHEEZING, VOMITING, COUGH. Rankings reflect reporting volume in this dataset, not confirmed side effect rates in the general population.

Who manufactures THEOPHYLLINE ANHYDROUS?

Labeling and FAERS entries often list Westminster Pharmaceuticals, LLC in connection with THEOPHYLLINE ANHYDROUS. Always verify the specific product and NDC with your pharmacist.

Important Disclaimer: This content is generated by AI analysis of FDA adverse event reports and is provided for informational purposes only. It is not medical advice. Adverse event reports submitted to the FDA do not prove that a medication caused the reported side effect. Always consult your healthcare provider before starting, stopping, or changing any medication. If you experience a serious side effect, contact your doctor or call 911 immediately.