Acid reflux; Swollen neck lymph gland on same side as injection after booster; Substantial excess phlegm after booster/Extremely large amount of ongoing phlegm; Choking sensation after booster/Constantly spitting to clear throat after booster; Sore throat/throat feels soar regularly; Gagging sensation regularly after booster/ choking ang gagging constantly; Left arm swollen; Hard to swallow food; Frequently shooting pain to left ear; Respiratory neck related issue; This spontaneous case was reported by a consumer and describes the occurrence of PRODUCTIVE COUGH (Substantial excess phlegm after booster/Extremely large amount of ongoing phlegm), CHOKING SENSATION (Choking sensation after booster/Constantly spitting to clear throat after booster), OROPHARYNGEAL PAIN (Sore throat/throat feels soar regularly), RETCHING (Gagging sensation regularly after booster/ choking ang gagging constantly) and PERIPHERAL SWELLING (Left arm swollen) in a 68-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 012H21B and 001A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Heart disorder. Concomitant products included HYDROCHLOROTHIAZIDE, METOPROLOL, SIMVASTATIN and AMLODIPINE for Heart disorder.   On 26-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 02-Dec-2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 02-Dec-2021, the patient experienced PRODUCTIVE COUGH (Substantial excess phlegm after booster/Extremely large amount of ongoing phlegm), CHOKING SENSATION (Choking sensation after booster/Constantly spitting to clear throat after booster), OROPHARYNGEAL PAIN (Sore throat/throat feels soar regularly), RETCHING (Gagging sensation regularly after booster/ choking ang gagging constantly), PERIPHERAL SWELLING (Left arm swollen), DYSPHAGIA (Hard to swallow food), EAR PAIN (Frequently shooting pain to left ear), MUSCULOSKELETAL DISCOMFORT (Respiratory neck related issue) and LYMPHADENOPATHY (Swollen neck lymph gland on same side as injection after booster). On an unknown date, the patient experienced GASTROOESOPHAGEAL REFLUX DISEASE (Acid reflux). The patient was treated with OMEPRAZOLE for Acid reflux (esophageal), at a dose of 40 milligram. At the time of the report, PRODUCTIVE COUGH (Substantial excess phlegm after booster/Extremely large amount of ongoing phlegm), CHOKING SENSATION (Choking sensation after booster/Constantly spitting to clear throat after booster), OROPHARYNGEAL PAIN (Sore throat/throat feels soar regularly), RETCHING (Gagging sensation regularly after booster/ choking ang gagging constantly), DYSPHAGIA (Hard to swallow food) and LYMPHADENOPATHY (Swollen neck lymph gland on same side as injection after booster) had not resolved and PERIPHERAL SWELLING (Left arm swollen), EAR PAIN (Frequently shooting pain to left ear), MUSCULOSKELETAL DISCOMFORT (Respiratory neck related issue) and GASTROOESOPHAGEAL REFLUX DISEASE (Acid reflux) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 27-Dec-2021, Computerised tomogram: results not known (Inconclusive) Patient visit his HCP on 27Dec21 and undergo CT Scan with contrast on the neck..     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Patient was advised to take Omeprazole 40 milligram for his acid reflux during his visit and no treatment information was provided for other event.  Patient visited ear, nose, and throat specialists for his issues and they found no infection.  Patient mentioned that had been to two different doctors however the adverse event had not been treated.   Most recent FOLLOW-UP information incorporated above includes: On 24-Jan-2022: Significant follow up information received: Reporter, Patient information and events added.