heart was a little jumpy; chest began to feel heavy/Chest pressure /pain then would move from my heart to my right side back to the center over and over, constant; Chest pain / The chest pain then began to make me feel almost faint; weak feeling; Tiredness/fatigue; Headache; feel almost faint; hard to catch my breath; Dry cough; This spontaneous case was reported by a consumer and describes the occurrence of PALPITATIONS (heart was a little jumpy), ASTHENIA (weak feeling), DIZZINESS (feel almost faint), CHEST DISCOMFORT (chest began to feel heavy/Chest pressure /pain then would move from my heart to my right side back to the center over and over, constant), CHEST PAIN (Chest pain / The chest pain then began to make me feel almost faint), HEADACHE (Headache) and FATIGUE (Tiredness/fatigue) in a 31-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 051E21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No medical history information provided.  Concomitant products included METHYLCELLULOSE (CITRUCEL) for Constipation, ELDERBERRY [SAMBUCUS NIGRA] from 2020 to an unknown date for an unknown indication.    On 25-Aug-2021 at 5:30 PM, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In August 2021, the patient experienced DIZZINESS (feel almost faint) (seriousness criterion hospitalization), DYSPNOEA (hard to catch my breath) and COUGH (Dry cough). On 26-Aug-2021 at 5:00 AM, the patient experienced HEADACHE (Headache) (seriousness criterion hospitalization). On 26-Aug-2021 at 2:00 PM, the patient experienced ASTHENIA (weak feeling) (seriousness criterion hospitalization) and FATIGUE (Tiredness/fatigue) (seriousness criterion hospitalization). On 26-Aug-2021 at 6:00 PM, the patient experienced CHEST PAIN (Chest pain / The chest pain then began to make me feel almost faint) (seriousness criterion hospitalization). On 27-Aug-2021, the patient experienced PALPITATIONS (heart was a little jumpy) (seriousness criterion hospitalization) and CHEST DISCOMFORT (chest began to feel heavy/Chest pressure /pain then would move from my heart to my right side back to the center over and over, constant) (seriousness criterion hospitalization). The patient was hospitalized on 27-Aug-2021 due to ASTHENIA, CHEST DISCOMFORT, CHEST PAIN, DIZZINESS, FATIGUE, HEADACHE and PALPITATIONS. The patient was treated with PARACETAMOL (TYLENOL) for Headache, at a dose of 1 dosage form. On 30-Aug-2021, FATIGUE (Tiredness/fatigue) had resolved. On 31-Aug-2021, HEADACHE (Headache) had resolved. At the time of the report, PALPITATIONS (heart was a little jumpy), ASTHENIA (weak feeling), DIZZINESS (feel almost faint), DYSPNOEA (hard to catch my breath) and COUGH (Dry cough) outcome was unknown and CHEST DISCOMFORT (chest began to feel heavy/Chest pressure /pain then would move from my heart to my right side back to the center over and over, constant) and CHEST PAIN (Chest pain / The chest pain then began to make me feel almost faint) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 27-Aug-2021, Electrocardiogram: heart was little jumpy (Inconclusive) heart was little jumpy. On 27-Aug-2021, Myocardial necrosis marker: normal (normal) normal. On 27-Aug-2021, Oxygen saturation: good (normal) good. On 27-Aug-2021, Vital signs measurement: good (normal) good.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       It was reported that some urine and blood samples were taken.  Patient was treated with anti-inflammatory drugs and administered IV bag. Patient was advised to take ibuprofen. Patient was scheduled to take second dose of vaccine on 22-Sep-21.  Company comment: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded. Further information has been requested.   Most recent FOLLOW-UP information incorporated above includes: On 01-Sep-2021: Added reporter details, patient details, lab data, suspect details, concomitant and treatment medications, added events.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded. Further information has been requested.