Some possible side effects of epinephrine are vomiting, irregular heartbeat, breathing problems, feeling anxious, sweating, body tremors, pale skin, dizziness and feeling extremely tired, as noted by Mayo Clinic. If these side effects get worse or there are signs of an overdose, it is important to get prompt medical attention.
Although these are some possible side effects, there can be others, including headaches, confusion and nausea, notes WebMD. Additionally, serious side effects of a possible overdose are seizures, inflammation of different areas of the body, vision problems, heartbeat irregularity, coma or fainting.
Epinephrine is a medication used in the treatment of allergic reactions caused by different allergens, including foods, certain medicines and insect bites. Epinephrine's mode of action is to open up the lung airways, states the National Institutes of Health's MedlinePlus. In most cases, the medication is given through auto-injectors like EpiPen or as an injection. In some patients, certain side effects can develop at the injection site, such as pain, a rash, redness and the sensation of warmth.
Besides having these side effects there can be drug interactions between epinephrine and other medications. Patients should tell their doctors if they are taking medications, such as diuretics, antidepressant or heart medicines like beta-blockers that may interact with epinephrine. Similarly, epinephrine can causes changes in blood glucose levels.