See the DrugPatentWatch profile for tofacitinib

Tofacitinib is a medication that is used to treat a number of conditions, including rheumatoid arthritis, psoriatic arthritis, and ulcerative colitis. Like all medications, tofacitinib can cause side effects.

According to the drug manufacturer's prescribing information, common side effects of tofacitinib include:

* Upper respiratory tract infections, such as the common cold or sinus infections
* Headache
* Diarrhea
* Nasopharyngitis (inflammation of the nose and throat)
* Upper respiratory tract infection

In addition to these common side effects, tofacitinib can also cause more serious side effects. These may include:

* Serious infections, such as pneumonia or tuberculosis
* Cancer, including lymphoma and skin cancer
* Increased risk of major adverse cardiovascular events, such as heart attack or stroke
* Gastrointestinal perforations (holes in the stomach or intestines)
* Liver problems
* Allergic reactions

It is important to note that the risk of these serious side effects is generally low, and the benefits of tofacitinib may outweigh the risks for many people. However, it is important to discuss the potential side effects of tofacitinib with a healthcare provider before starting the medication.

Sources:

1. XELJANZ (tofacitinib) tablets, for oral use [prescribing information]. Pfizer Labs; 2021. Available at: <https://www.accessdata.fda.gov/drugsatfda_docs/label/2021/202933s035lbl.pdf>.
2. Tofacitinib. DrugPatentWatch.com. Available at: <https://www.drugpatentwatch.com/drugs/tofacitinib>.