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Popular Brands: : Theophylline, Theo-dur, Uniphyl, Theo-24, Slo-bid
Official FDA Reports43,452
Social Media Events544
Total Posts715
Avg. Review Score3.69/ 5
Active Ingredients
  • Theophylline
  • 3m Pharmaceuticals Inc
  • Actient Pharmaceuticals Llc
  • Alpharma Us Pharmaceuticals Division
  • B Braun Medical Inc
  • Baxter Healthcare Corp
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  This report is for all products sharing this active ingredient. For more details, please use our Workbench for research on individual brands like Theophylline.

* Extracted from FDA Adverse Event Report


The quarterly trend chart illustrates changing levels of adverse events over time. Results from both the FDA Adverse Event Database (FAERS) and adverse events extracted from social media by Druginformer are plotted side-by-side for easy comparison.

The proportion of people completing user reviews who complained about a side effect.

The proportion of social media adverse event complaints for each adverse event type.

The proportion of FAERS (FDA) adverse event complaints for each adverse event type.

Theophylline Side Effects

  Social Media
(Online Comments)
(Reports Submitted to FDA)
Side Effect On Drug
Reports % of
Alarm Reports % of

* DrugInformer calculates alarm using a proprietary algorithm. Alarm should not be taken as an ofiicial signal from the FDA or other regulatory entity.

User Voices

The following are comments from users that experienced side effects while taking Theophylline

Feeling Jittery

Took these pills a long time ago. Worked good but got me jittery .

Source: Theophylline

View full report on Theophylline related feeling jittery

Did the author experience feeling jittery while taking theophylline?

What is this?


Terrible gave me the shakes and made me very anxious

Source: Theophylline

View full report on Theophylline related tremor

Did the author experience tremor while taking theophylline?

What is this?


Terrible gave me the shakes and made me very anxious

Source: Theophylline

View full report on Theophylline related anxiety

Did the author experience anxiety while taking theophylline?

What is this?

Tell us about your Experience with Theophylline

Thank you for sharing your experience with us!

Share Your Experience

Druginformer Identified Side Effects: Depression

Posted By Buprop in fdb.rxlist.com on August 3, 2014 @ 12:00 am

Does not provide suitable relief from depression.

Druginformer Identified Side Effects: Fatigue, Pain, Depression, Hangover, Somnolence

Posted By tbthompson in fdb.rxlist.com on July 9, 2014 @ 12:00 am

I have beeen on the generic form of Wellbutrin for 2 days now. BIG mistake to switch from Pristiq to this. This medication has made me feel like a zombie. I feel achy, hungover, tired, depressed, ...

Druginformer Identified Side Effects: Dizziness, Confusional state, Sexual dysfunction

Posted By madkinggeorge in fdb.rxlist.com on July 3, 2014 @ 12:00 am

I take 150 in AM and 150 in PM. My sexual dysfunction of delayed or nonexistent orgasm has completely reversed. That is a good thing. I think my dizziness, confusion, feeling of ineptness may be from...

Druginformer Identified Side Effects: Dizziness

Posted By Anonymous in fdb.rxlist.com on July 2, 2014 @ 12:00 am

... with 45mg per day which I would recommend, reduces the risk for any side effects. I am now up to 300 XL with 150 SR upon waking. The only side effect I have experience was dizziness when starting the ...

Druginformer Identified Side Effects: Heart rate increased

Posted By Anonymous in fdb.rxlist.com on April 27, 2014 @ 12:00 am

every side effect hit me from rapid heart rate and mode swings. do not take this drug

Druginformer Identified Side Effects: Sudden death, Mood altered, Somnolence

Posted By Sunnie in fdb.rxlist.com on April 26, 2014 @ 12:00 am

I have been taking bupropion for almost a month. The first two weeks were difficult. I experienced all the classic side effects. Groggy, weird taste in mouth, sadness and preoccupied with thoughts of ...

Druginformer Identified Side Effects: Tremor

Posted By Anonymous in fdb.rxlist.com on April 21, 2014 @ 12:00 am

I increased my bupropion xl 150 mg. to 300 mg and found I have tremors in one of my arms.

Druginformer Identified Side Effects: Tremor, Muscle spasms

Posted By Y_We_Here in fdb.rxlist.com on April 15, 2014 @ 12:00 am

... depression for a few years mostly by helping me focus and get out of bed in the morning. I switched to Paxil when the side effects of clenching my jaws and muscle tremors outweighed the benefits. Pa...

Druginformer Identified Side Effects: Depression

Posted By sasha in fdb.rxlist.com on April 8, 2014 @ 12:00 am

I don't notice a difference in my mood still depressed. but my weight has remained the same

Druginformer Identified Side Effects: Anxiety, Depression

Posted By cotarick in fdb.rxlist.com on March 22, 2014 @ 12:00 am

uproprion has helped some with depression,but may have also caused increased anxiety in the process.

Additional Drug Information

* Warning: The facts and figures contained in these reports are accurate to the best of our capability; however, our metrics are only meant to augment your medical knowledge, and should never be used as the sole basis for selecting a new medication. As with any medical decision, be sure to work with your doctor to ensure the best choices are made for your condition.

* About FAERS: The FDA Adverse Event Reporting System (FAERS) is used by FDA for activities such as looking for new safety concerns that might be related to a marketed product, evaluating a manufacturer's compliance to reporting regulations and responding to outside requests for information. Reporting of adverse events is a voluntary process, and not every report is sent to FDA and entered into FAERS. The FAERS database may contain duplicate reports, the report quality is variable, and many factors may influence reporting (e.g., media attention, length of time a drug is marketed, market share). For these reasons, FAERS case reports cannot be used to calculate incidence or estimates of risk for a particular product or compare risks between products.