evening she felt horrible; chest pain; ached all over; did not feel like eating; upset stomach; had no energy at all; Headache; This spontaneous case was reported by a consumer and describes the occurrence of FEELING ABNORMAL (evening she felt horrible), CHEST PAIN (chest pain), PAIN (ached all over), DECREASED APPETITE (did not feel like eating) and ABDOMINAL DISCOMFORT (upset stomach) in an 82-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     Previously administered products included for Drug use for unknown indication: Pfizer Covid shot (Dose 2, administered in right arm around 1:00) in February 2021, Pfizer Covid shot (Dose 2, administered in right arm around 1:00) in February 2021, Pfizer Covid shot (Dose 1 and administered in right arm). Past adverse reactions to the above products included Feeling unwell with Pfizer Covid shot; Myalgia with Pfizer Covid shot; and No adverse event with Pfizer Covid shot. Concurrent medical conditions included Rheumatoid arthritis, Congestive heart failure and Thyroid disorder NOS. Concomitant products included THYROID (ARMOUR THYROID) for Thyroid disorder NOS, HYDROCHLOROTHIAZIDE and CLOPIDOGREL BISULFATE (PLAVIX) for an unknown indication.    On 08-Dec-2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 08-Dec-2021, the patient experienced FEELING ABNORMAL (evening she felt horrible), CHEST PAIN (chest pain), PAIN (ached all over), DECREASED APPETITE (did not feel like eating), ABDOMINAL DISCOMFORT (upset stomach), ASTHENIA (had no energy at all) and HEADACHE (Headache). At the time of the report, FEELING ABNORMAL (evening she felt horrible), CHEST PAIN (chest pain), PAIN (ached all over), DECREASED APPETITE (did not feel like eating), ABDOMINAL DISCOMFORT (upset stomach), ASTHENIA (had no energy at all) and HEADACHE (Headache) was resolving.            It was reported that reporter did not have date of when got the second dose of pfizer covid shot, only knows it was the middle of Feb-2021, and the following day did not feel good.   It was reported that concomitant medication plavix Indication reported as on unknown date in 2002 had an MRI and one side back of head almost closed, probably from an accident.  Patient had no prior vaccinations (within 4 weeks) and relevant tests were not done.   It was mentioned that patient got the wrong one, moderna covid booster instead of the Pfizer. Patient got the moderna covid booster in the afternoon and by that evening she felt horrible. She felt horrible that night and yesterday. She felt horrible, described as, had a headache, initially described as chest pain, ached all over, had no energy at all, did not feel like eating. She then further clarified and stated she does not know if it was chest pain or upset stomach, it was not down in her stomach, stated she did not know/she was not sure. Patient confirmed events have improved, gotten better today. Yesterday she could not do anything but sleep but today she was up and going. Patient added her sister came up positive for covid and she was with her on Sunday and she did not know if that has any effect or not.   No treatment information was provided.