Critical Seriousness - Abnormal Heart Rhythm - Conduction Disorder of the Heart is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Blockage of Normal Bile Flow - Cholestasis is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Bronchospasm - Bronchospastic Pulmonary Disease is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Fit - Tonic Clonic Seizure is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Hallucination - Hallucinations is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Heart Throbbing or Pounding - Palpitations is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Hepatitis is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - High Blood Pressure - Hypertension is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Insufficient Blood Supply to the Colon - Ischemic Colitis is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Life Threatening Allergic Reaction - Anaphylaxis is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Liver Problems - Disease of Liver is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Seizures - Seizure Disorder is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Throwing Up - Vomiting is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Trouble Breathing - Dyspnea is a Life Threatening Side Effect of Zyrtec-D Critical Seriousness - Visible Water Retention - Edema is a Life Threatening Side Effect of Zyrtec-D |