During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it; During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it; I felt nausea Tuesday I was not feeling great and today the Lightheadedness was very significant; I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side; I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side; This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE DISCOMFORT (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side), DIZZINESS (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it), PRESYNCOPE (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it), VACCINATION SITE PAIN (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side) and NAUSEA (I felt nausea Tuesday I was not feeling great and today the Lightheadedness was very significant) in a 55-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 050C21A) for COVID-19 vaccination.     Concomitant products included MULTIVITAMIN [VITAMINS NOS] for an unknown indication.    On 16-Aug-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 16-Aug-2021, the patient experienced VACCINATION SITE DISCOMFORT (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side) and VACCINATION SITE PAIN (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side). On 17-Aug-2021, the patient experienced NAUSEA (I felt nausea Tuesday I was not feeling great and today the Lightheadedness was very significant). On 19-Aug-2021, the patient experienced DIZZINESS (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it) and PRESYNCOPE (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it). At the time of the report, VACCINATION SITE DISCOMFORT (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side), DIZZINESS (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it), PRESYNCOPE (During a meeting I was feeling really woozy and lightheaded I have never passed out but today I felt close to it), VACCINATION SITE PAIN (I received the injection in my left arm but it is uncomfortable and painful when I go to sleep on my left side) and NAUSEA (I felt nausea Tuesday I was not feeling great and today the Lightheadedness was very significant) had not resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Other concomitant medications reported include thyroid medications unspecified.  The patient experienced major lightheadedness and felt like was close to passing out and had an uncomfortable pain in injection site arm today the side effects were quite significant. The symptoms are still ongoing.  Treatment information was not provided.