Antidepressant Celexa—Warnings

There have been 22 drug regulatory agency warnings from four countries (United States, United Kingdom, Canada and Australia) and the European Union on Celexa. These are as follows:

United States, December 14, 2011: The FDA notified healthcare professionals and the public about the use of selective serotonin reuptake inhibitor (SSRI) antidepressants, including Celexa, by women during pregnancy and the potential risk of a rare heart and lung condition known as Persistent Pulmonary Hypertension of the Newborn (PPHN). Source: “Selective Serotonin Reuptake Inhibitor (SSRI) Antidepressants: Drug Safety Communication – Use During Pregnancy and Potential Risk of Persistent Pulmonary Hypertension of the Newborn” FDA, December 14, 2011,

United Kingdom, December 01, 2011: A warning issued by the Medicines Healthcare products Regulatory Agency (MHRA) alerted that citalopram (Celexa) and escitalopram are associated with dose-dependent QT interval prolongation (heart beat irregularities) and should not be used in those with certain preexisting heart conditions, or with drugs known to have the same side effect. Source: “Citalopram and escitalopram: QT interval prolongation-new maximum daily dose restrictions (including in elderly patients), contraindications, and warnings” MHRA, December 2011,

United States, August 24, 2011: The FDA issued a warning to doctors about prescribing the antidepressant Celexa (citalopram) above certain dosages as it can cause abnormal changes in the electrical activity of the heart. The safety announcement said that Celexa “should no longer be used at doses greater than 40 mg per day.” Source: “FDA Drug Safety Communication: Abnormal heart rhythms associated with high doses of Celexa (citalopram hydrobromide),” FDA, August 24, 2011,

United States, July 26, 2011: The FDA issued a warning about serious central nervous system (CNS) reactions that occur when the antibacterial drug linezolid (Zyvox) is given to patients taking psychiatric medications that work through the serotonin system of the brain (such a Celexa). Some of the reactions included Serotonin Syndrome a potentially (a life threatening drug reaction that causes the body to have too much serotonin), trouble with coordination, muscle twitching, etc. There were also some deaths reported. Source: Zyvox (linexolid), MedWatch Safety Information, July 26, 2011.

United States, September 01, 2008: FDA’s MedWatch modified the precautions of Celexa and Lexapro to include information on risks of Hyponatremia (low blood sodium levels) and abnormal bleeding especially when combined with other drugs such as aspirin. Source: “Detailed View: Safety Labeling Changes” FDA Center for Drug Evaluation and Research, September 2008.

United Kingdom, February 05, 2008: UK’s Medicines and Healthcare products Regulatory Agency ordered drug companies to update the warnings on antidepressants, such as Celexa, to show that they cause suicidal thoughts and behavior. Source: “Implementation of warnings on suicidal thought and behaviour in antidepressants,” Medicines and Healthcare Products Regulatory Agency, February 5, 2008.

European Union, January 2008: The Pharmacovigilance Working Party (a party that provides advice on the safety of medicinal products and on the investigation of adverse reactions associated with medicinal products authorized in the European Union) recommended an update to product labeling and all antidepressants (including Celexa) patient information leaflets to include information on the increased risk of suicide for children to young adults. Source: “Antidepressants and suicidal thoughts and behaviour,” Pharmacovigilance Working Party, January 2006.

United States, May 02, 2007: The FDA officially extended the age group covered in the October 15, 2004 black box warning regarding antidepressants (including Celexa) causing suicidal tendencies in children and adolescents, to include 18 to 24 year-olds. Source: “FDA Proposes New Warnings About Suicidal Thinking, Behavior in Young Adults Who Take Antidepressant Medications,” FDA News, May 2, 2007.

United States, July 19, 2006: The FDA issued a Public Health Advisory regarding the combination of certain migraine medications and certain types of antidepressants. The combination of these drugs can cause a life-threatening condition called serotonin syndrome (which occurs when the body has too much serotonin; symptoms may include restlessness, hallucinations, loss of coordination, fast heart beat, rapid changes in blood pressure, increased body temperature, overactive reflexes, nausea, vomiting, and diarrhea). The migraine medications (Amerge, Axert, Frova, Imitrex, Maxalt, Maxalt-MLT, Relpax, Zomig, Zomig-ZMT) should not be combined with any of these newer antidepressants: Celexa, Luvox, Lexapro, Paxil, Prozac, Symbyax, Zoloft, Cymbalta, Effexor. Source: ” Public Health Advisory – Combined Use of 5-Hydroxytryptamine Receptor Agonists (Triptans), Selective Serotonin Reuptake Inhibitors (SSRIs) or Selective Serotonin/Norepinephrine Reuptake Inhibitors (SNRIs) May Result in Life-threatening Serotonin Syndrome,” FDA, July 19, 2006.

Canada, March 10, 2006: Health Canada issued an advisory warning for antidepressant use in pregnant women. Research shows newer antidepressants may increase risk of a serious lung disorder in newborns. The warning applies to all newer antidepressants including Wellbutrin, Celexa, Cipralex, Prozac, Luvox, Remeron, Paxil, Zoloft, Effexor, Zyban. Source: “Newer antidepressants linked to serious lung disorder in Newborns” Health Canada, March 10, 2005.

Canada, February 25, 2006: Health Canada issued an advisory to the press regarding newer antidepressants being linked to serious lung disorders in newborns. Health Canada advises that pregnant women taking newer antidepressants (including Celexa) should discuss the situation with their doctor because of the potential risk to the baby. Source: “Advisory – Newer antidepressants linked to serious lung disorder in newborns” CNW Group, February 25, 2006.

European Union, August 19, 2005: The Commission of the European Communities, representing 25 European countries, endorsed and issued the strongest warning yet against child antidepressant use (which includes Celexa) as recommended by Europe’s Committee for Medicinal Products for Human Use (CHMP). Clinical trials had shown that the drugs caused suicidal behavior including suicide attempts and suicidal ideation, aggression, hostility (predominantly aggression, oppositional behavior and anger) and/or related behavior. Source: Commission of the European Communities Commission Decision concerning the placement on the market, under Article 21 of the Directive 2001/83/EC of the European Parliament and of the Council, Brussels 19-VIII-2005, C (2205) 3256.

Australia, August 04, 2005: The Australian Therapeutic Goods Administration published an Adverse Drug Reactions Bulletin that reported on a review of newer antidepressants (such as Celexa) which found evidence supporting an association between them and “new onset of suicidality” in adults. It usually developed shortly after beginning the drugs or after an increase in dosage that could cause akathisia (body restlessness), agitation, nervousness and anxiety. Similar symptoms could also occur during withdrawal. Source: “Suicidality with SSRIs: adults and children,” The Australian Therapeutic Goods Administration, Adverse Drug Reactions Bulletin, Vol. 24, No. 4, p. 14, August 2005.

United States, June 30, 2005: The FDA issued a Public Health Advisory entitled “Suicidality in Adults Being Treated with Antidepressant Medications,” that stated that several recent scientific publications suggested the possibility of an increased risk of suicidal behavior in adults taking both older and newer antidepressants (which includes Celexa). It recommended that physicians monitor adults who took antidepressants for suicidal tendencies. Source: “Suicidality in Adults Being Treated with Antidepressant Medications,” FDA Public Health Advisory, June 30, 2004.

European Union, April 25, 2005: The European Medicines Agency’s Committee for Medicinal Products for Human Use concluded that antidepressants (like Celexa) were associated with increased suicide-related behavior and hostility in young people. The London-based watchdog said it recommended the inclusion of strong warnings across the whole of the European Union to doctors and parents about these risks and that the drugs should not be used in children and adolescents in off label situations. Source: “EU calls for tougher warnings on antidepressants for kids”, April 25, 2005.

United States, October 15, 2004: The FDA ordered pharmaceutical companies to add a “black box” warning to antidepressant packaging (including Celexa), explaining that the drugs could cause suicidal thoughts and actions in children and teenagers. It also directed the manufacturers to print and distribute medication guides with every antidepressant prescription and to inform patients of the risks. Source: “Suicidality in Children and Adolescents Being Treated With Antidepressant Medications,” FDA Public Health Advisory, October 15, 2004.

Canada, June 03, 2004: Health Canada issued an advisory to the public that stated stronger warnings have been placed on antidepressants. These warnings indicate that people taking these drugs at any age are at greater risk of behavioral or emotional changes including self-harm or harm to others. The advisory said, “A small number of patients taking drugs of this type may feel worse instead of better…. For example, they may experience unusual feelings of agitation, hostility or anxiety, or have impulsive or disturbing thoughts that could involve self-harm or harm to others.” The drugs mentioned in this Advisory are Wellbutrin (bupropion), Zyban (bupropion), Celexa (citalopram), Prozac (fluoxetine), Luvox (fluvoxamine), Remeron (mirtazapine), Paxil (Paroxetine), Zoloft (sertraline), Effexor (venlafaxine). Source: Jirina Vlk, “Health Canada advises Canadians of stronger warnings for SSRIs and other newer anti-depressants,” Health Canada, 2004-31, June 3, 2004.

United States, March 22, 2004: The FDA asked drug companies to add new warnings on 10 widely used antidepressants. It said patients who used Prozac (fluoxetine), Zoloft (sertraline), Paxil (Paroxetine), Luvox (fluvoxamine), Celexa (citalopram), Lexapro (escitalopram), Wellbutrin (bupropion), Effexor (venlafaxine), Serzone (nefazodone), and Remeron (mirtazapine), should be closely monitored for possible suicidal behavior and anxiety, especially when the patient first begins taking the drugs or changes doses. It stated, “Anxiety, agitation, panic attacks, insomnia, irritability, hostility, impulsivity, akathisia [severe restlessness], hypomania [abnormal excitement, mild mania] and mania [psychosis characterized by exalted feelings, delusions of grandeur and overproduction of ideas], have been reported in adult and pediatric patients being treated with antidepressants.” Source: “Worsening Depression and Suicidality in Patients Being Treated with Antidepressant Medications,” FDA Public Health Advisory, March 22, 2004.

Canada, February 03, 2004: Health Canada issued a warning to the public about Prozac, Paxil, Celexa, Luvox, Remeron, Zoloft and Effexor. The warning states that reports show an increased risk of suicide in children taking these drugs. Health Canada said its action was based on international studies that linked the use of these drugs to “suicide-related events,” suicides and suicide attempts. Source: “Health Canada advises Canadians under the age of 18 to consult physicians if they are being treated with newer anti-depressants,” About Health Canada, February 2004.

United States, October 27, 2003: The FDA released a “Health Advisory” where they announced that they had completed a preliminary review of reports of suicidality in pediatric patients for eight antidepressant drugs (both newer and older antidepressants, including Celexa) and had determined that additional data and analysis and public discussion of available data were needed on the issue. The Health Advisory simply urged health care professionals to use the drugs with caution. Source: Food and Drug Administration (FDA), “Reports of Suicidality in Pediatric Patients Being Treated with Antidepressant Medications for Major Depressive Disorder (MDD)” October 27, 2003.

Australia, August 01, 2003: The Australian Therapeutic Goods Administration reported that the use of newer antidepressants, like Celexa, during or after pregnancy may result in adverse reactions to newborn babies, due to the withdrawal effect following intra-uterine exposure, or a toxic effect from ingestion of an antidepressant in breast-milk. The withdrawal effects the baby experienced included agitation, jitteriness, poor feeding, sleepiness/lethargy, gastrointestinal symptoms and hypotania (deficient tone or tension). Source: “Maternal SSRI Use and Neonatal Effects,” The Australian Therapeutic Goods Administration, Adverse Drug Reactions Bulletin, Vol. 22, No. August 4, 2003, p. 14.

Australia, February 01, 2000: The Australian Therapeutic Goods Administration published an Adverse Drug Reactions Bulletin reporting that newer antidepressants are commonly reported to cause nightmares and specifically mentioned Prozac, Zoloft, Paxil and Celexa. Source: “Drug-induced nightmares,” Australian Therapeutic Goods Administration, Adverse Drug Reactions Bulletin, Vol. 19, No. 1, February 2000.

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