Very weak; Diarrhea; Migraine headaches; Dehydrated; Reflux or stomach pain; Covid arm; Light headedness; Dizzy or sleepy; Lost appetite; Throat hurts or irritating; Stool bright red; Pressure on head; Right leg feels like there's lump moving; Pain on left side; Metal feeling in the body; Heart pulsating really fast; Rash on throat; Fever; Nausea; Vomiting; Headache; This spontaneous case was reported by a consumer and describes the occurrence of ASTHENIA (Very weak), DIARRHOEA (Diarrhea), MIGRAINE (Migraine headaches), DEHYDRATION (Dehydrated) and ABDOMINAL PAIN UPPER (Reflux or stomach pain) in a 40-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 088D21A and 091D21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Nickel sensitivity, Latex allergy, Seasonal allergy, Fruit allergy (Allergic to pineapple) and Fruit allergy (Allergic to Banana). Concomitant products included VITAMINS NOS and CALCIUM for an unknown indication.   On 20-Jul-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On an unknown date, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 20-Jul-2021, the patient experienced ASTHENIA (Very weak), DIARRHOEA (Diarrhea), MIGRAINE (Migraine headaches), DEHYDRATION (Dehydrated), ABDOMINAL PAIN UPPER (Reflux or stomach pain), VACCINATION COMPLICATION (Covid arm), DIZZINESS (Light headedness), SOMNOLENCE (Dizzy or sleepy), DECREASED APPETITE (Lost appetite), OROPHARYNGEAL PAIN (Throat hurts or irritating), FAECES DISCOLOURED (Stool bright red), HEAD DISCOMFORT (Pressure on head), MASS (Right leg feels like there's lump moving), PAIN (Pain on left side), FEELING ABNORMAL (Metal feeling in the body), HEART RATE INCREASED (Heart pulsating really fast), RASH (Rash on throat), PYREXIA (Fever), NAUSEA (Nausea), VOMITING (Vomiting) and HEADACHE (Headache). The patient was treated with ONDANSETRON (ZOFRAN [ONDANSETRON]) for Adverse event, at an unspecified dose and frequency and FAMOTIDINE (PEPCID [FAMOTIDINE]) for Adverse event, at an unspecified dose and frequency. At the time of the report, ASTHENIA (Very weak), DIARRHOEA (Diarrhea), MIGRAINE (Migraine headaches), DEHYDRATION (Dehydrated), ABDOMINAL PAIN UPPER (Reflux or stomach pain), VACCINATION COMPLICATION (Covid arm), DIZZINESS (Light headedness), SOMNOLENCE (Dizzy or sleepy), DECREASED APPETITE (Lost appetite), OROPHARYNGEAL PAIN (Throat hurts or irritating), FAECES DISCOLOURED (Stool bright red), HEAD DISCOMFORT (Pressure on head), MASS (Right leg feels like there's lump moving), PAIN (Pain on left side), FEELING ABNORMAL (Metal feeling in the body), HEART RATE INCREASED (Heart pulsating really fast), RASH (Rash on throat), PYREXIA (Fever), NAUSEA (Nausea), VOMITING (Vomiting) and HEADACHE (Headache) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 20-Jul-2021, Heart rate: high (High) Heart pulsating really fast.         Additional information reported include that the patient was feeling better.