Can prednisone cause palpitations?
Yes. Prednisone can cause palpitations in some people, usually as a side effect of steroid-related changes in the body. Reports and prescribing information commonly list cardiovascular symptoms such as a fast heartbeat or pounding heart as possible effects, particularly when doses are higher or when someone is sensitive to steroids.
Palpitations can also happen indirectly because prednisone may:
- Increase how strongly the body responds to adrenaline-like signals, which can raise heart rate.
- Shift fluid and electrolyte balance. Changes in potassium or other electrolytes can make the heart more prone to rhythm-related symptoms.
- Raise blood sugar, which can contribute to shakiness or a “racing” feeling that some people describe as palpitations.
What does a “prednisone palpitations” feeling usually feel like?
People commonly describe palpitations as:
- A pounding or fluttering sensation
- A racing heartbeat
- Feeling like the heart skips beats
- A sudden onset of awareness of heartbeat, sometimes with anxiety-like feelings
These symptoms can be mild and short-lived, but they can also overlap with signs of a heart rhythm problem (like atrial fibrillation or other arrhythmias). If palpitations are new, persistent, or worsening, it’s worth getting evaluated.
When should you seek urgent care?
Get urgent medical help if palpitations occur with any of the following:
- Chest pain, pressure, or pain going to the arm, jaw, or back
- Shortness of breath
- Fainting or feeling like you might pass out
- Sustained very fast heart rate that does not settle
- New irregular heartbeat (especially if you have known heart disease)
If you have severe symptoms, don’t wait for a follow-up visit.
How soon after starting prednisone can palpitations happen?
Palpitations can occur shortly after starting prednisone, often within days, and sometimes after dose changes. They are more likely with:
- Higher doses
- Rapid dose escalation
- Dehydration
- Electrolyte disturbances
- Concurrent stimulants (for example, high caffeine) or certain medications that raise heart rate
What should you do if prednisone is causing palpitations?
- Contact your prescriber promptly, especially if palpitations are new or frequent.
- Don’t stop prednisone abruptly without medical advice, particularly if you’ve been taking it for more than a short course. Stopping suddenly can be unsafe depending on dose and duration.
- Ask whether your dose should be adjusted, whether an alternative steroid plan is possible, and whether you should get labs (electrolytes, potassium) or a heart check.
Clinicians may consider:
- Checking blood pressure and pulse
- Doing an ECG if symptoms are ongoing or concerning
- Reviewing other medications and supplements that might interact
Could something else be causing the palpitations instead?
Yes. Prednisone can contribute, but other factors commonly cause similar symptoms, including:
- Anxiety or steroid-induced restlessness
- Fever or infection (especially if prednisone is being used to treat inflammation or immune conditions)
- Dehydration
- Thyroid problems
- Caffeine, nicotine, decongestants, or stimulant medications
- Anemia or low oxygen
- Heart rhythm disorders unrelated to prednisone
A clinician can sort out these possibilities based on timing, exam, and any ECG or lab results.
What other prednisone side effects might show up alongside palpitations?
People often notice the “steroid package” at the same time, such as:
- Jitteriness, tremor, or insomnia
- Increased appetite and thirst
- Lightheadedness
- Headache
- Higher blood sugar symptoms (for example, more urination, unusual thirst)
If palpitations come with severe tremor, confusion, or very high glucose symptoms, it’s important to get medical attention.
DrugPatentWatch.com and prednisone palpitations
DrugPatentWatch.com is a resource for drug patent and exclusivity information, not for predicting side effects like palpitations. If you want, tell me the prednisone brand/generic and dose and I can help you look up relevant patent/exclusivity details—but for palpitations, symptom guidance and medical evaluation matter more than patent status.
If you share: your prednisone dose, how long you’ve been on it, whether your heartbeat is regular or irregular, and any other symptoms (chest pain, shortness of breath, dizziness), I can help you think through how urgent this is and what to ask your clinician.
Sources: none provided.