Can Zoloft cause heart palpitations at night? 

The following information will address the question: Can Zoloft cause heart palpitations at night? We will provide valuable information on what to do if you experience adverse effects or if you have a pre-existing heart condition.

Can Zoloft cause heart palpitations at night? 

Zoloft can cause heart palpitations at night or at any other part of the day. However, it is not considered a common side effect (1). 

Heart palpitations on Zoloft are more commonly observed in people who are new to Zoloft, to antidepressants in general, or those who shift to a higher Zoloft dose. In long-term users, palpitations are rarely seen. 

However, Zoloft can cause cardiac side effects in some individuals, although it can be used by people who have cardiovascular disease. Make sure you talk to your healthcare provider if you think Zoloft is causing palpitations in you. 

Why does Zoloft cause heart palpitations? 

The exact reason why Zoloft causes heart palpitations is not fully known. However, it’s understandable for new users as their bodies are not adjusted to the effects of Zoloft. 

The antidepressant increases the amount of serotonin in your brain. This excitatory chemical can make your heart beat faster and harder during the early course of your treatment or when you switch to a higher dose. This increased heart rate can trigger palpitations.

What does research suggest?

Research studies have indicated that some people can experience heart palpitations while taking Zoloft. In a clinical trial involving patients with major depressive disorder, 1.8% of participants taking Zoloft reported palpitations, compared to 0.3% of participants taking a placebo (3).

Some research reviews have indicated that Zoloft can trigger life-threatening arrhythmias after a heart attack in some patients, which is an alarming sign for cardiac patients (3). So people with heart problems shouldn’t use Zoloft unless prescribed by their doctors (4).

What to do if Zoloft causes heart palpitations? 

Talk to your healthcare provider if Zoloft causes heart palpitations. It could be an early side effect of this antidepressant, which will most probably go away within a few weeks. 

Your doctor may recommend adjusting your dose, switching to a different medication, or conducting further testing to rule out any underlying health issues.

However, proper monitoring is still necessary for healthy individuals, as Zoloft can cause QT prolongation and palpitations in non-cardiac patients as well. 

The QT interval is a wave observed on the electrocardiogram representing the ventricular repolarization and depolarization duration. Changes in this range can indicate heart problems (5), as it is a critical marker to check for the development of arrhythmias and palpitations in non-cardiac patients (2).

This is why you should report it to your doctor to determine the safety and efficacy of Zoloft for future use.

Call your medical emergency helpline right away if you feel palpitations coupled with the following:

  • Shortness of breath
  • Dizziness
  • Chest pain
  • Fainting

Final words

Zoloft may or may not cause heart palpitations in some people. It is always best to closely monitor your side effects and discuss them with your provider. Generally, Zoloft is not a cardiotoxic antidepressant, but precautions should be taken in cardiac patients.

If you are physically healthy and are new to Zoloft or antidepressants in general, you may experience a number of different side effects during the early course of your treatment. However, most of these side effects begin to subside as your body adjusts to the medication. 

Just consult your doctor if you are concerned about any of the side effects, and don’t make any changes to your prescription on your own. 

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References

1.-

NHS. Side effects – Selective serotonin reuptake inhibitors (SSRIs); [updated 2021 Dec 8; cited 2023 Jun 8]. Available from:https://www.nhs.uk/mental-health/talking-therapies-medicine-treatments/medicines-and-psychiatry/ssri-antidepressants/side-effects/

2.-

Gutlapalli SD, Prakash K, Swarnakari KM, Bai M, Manoharan MP, Raja R, Jamil A, Csendes D, Desai A, Desai DM, Alfonso M. The Risk of Fatal Arrhythmias Associated With Sertraline in Patients With Post-myocardial Infarction Depression. Cureus. 2022 Sep 8;14(9):e28946. doi: 10.7759/cureus.28946. PMID: 36237772; PMCID: PMC9547663. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9547663/

3.-

Keller MB, et al. Efficacy of sertraline in the treatment of major depressive disorder: a 12-week randomized controlled trial. Am J Psychiatry. 2000;157(4):537-544. Available from: https://journals.lww.com/psychopharmacology/Abstract/2018/10000/Efficacy_of_Sertraline_in_Patients_With_Major.8.aspx

4.-

NHS. Side effects – Who can and cannot take sertraline; [updated 2022 Feb 2; cited 2023 Jun 8]. Available from:https://www.nhs.uk/medicines/sertraline/who-can-and-cannot-take-sertraline/

5.-

Al-Akchar M, Siddique MS. Long QT Syndrome. [Updated 2022 Dec 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK441860/

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