Search and filter adverse-event reports.
1,929,324 reports(818 ms)
Tachycardia; had a low TSH level, but normal T3 and T4; swelling in her neck; Biopsy; blood pressure spiked; Angina; Subclinical hyperthyroidism; Subacute thyroiditis; This is a spontaneous report received from a Consumer or other non HCP. A 67-year-old femal…
she developed shingles (blisters broke out on Thursday 8/14/2025) and symptoms of a headache; Earache in left ear; Diagnosed with stage 3 breast cancer; This spontaneous report was received from a Physician and refers to a 59-year-old female patient. The pat…
No adverse reactions reported associated to any of the administrations of either VARIVAX or PROQUAD to any of the patients involved./No additional AE; HCP called to report TE occurring on 6/20/2025 for VARIVAX and PROQUAD that were administered on multiple dif…
Arm slightly sore the next day; This non-serious case was reported by a consumer via interactive digital media and described the occurrence of pain in arm in a patient who received RSVPreF3 adjuvanted (RSV vaccine) for prophylaxis. On an unknown date, the pa…
multiple sclerosis/autoimmune disease; This spontaneous case was reported by a consumer and describes the occurrence of MULTIPLE SCLEROSIS (multiple sclerosis/autoimmune disease) in a female patient of an unknown age who received SPIKEVAX NOS (SPIKEVAX NOS) fo…
As he was walking after the vaccination, he started feeling dizzy and he fainted 10 minutes after vaccination. He became conscious right away but he was pale and sweating. His legs elevated and iced on the neck, and his vital was stable.
March 30 3021 admitted to Hosp stdgec4 congestive heart failure with 70 clots in lungs. Put on Coumadin a week later IN the evening timesuffered TIA with a 2.7 INR PER THE DR who called that morning to discuss blood tests results. Diagnosed with an ejection fr…
While drawing up the MMRV (ProQuad), a tiny piece of something silver was noticed to be floating around in vial after sterile diluent was combined. This is the second vaccine noticed to have the same foreign piece in it. Measles, Mumps, Rubella and Varicella V…
Between the dates 7/24/25 and 8/13/25 there were twenty Japanese Encephalitis vaccine shots given with a pediatric dose (0.25ml) to adults. This medication error was discovered when a nurse was reviewing the preparation steps for the vaccine, and it was realiz…
Prevnar 20 medication bag was leaving prior to administration. Patient did not receive full dose of medication.
No reported side effects.; Caller also stated the 3rd dose was administered late; 2 year old child was administered an additional dose of RECOMBIVAX HB; This spontaneous report was received from a nurse and refers to a 2-year-old patient of unknown gender. T…
No adverse reactions reported associated to any of the administrations of either VARIVAX or PROQUAD to any of the patients involved./No additional AE; HCP called to report TE occurring on 6/20/2025 for VARIVAX and PROQUAD that were administered on multiple dif…
Received from the AE Self-Service Portal: Report submitted by Merck Employee Headache, sore arm, and fatigue following shot administration. Arm pain led to sleep interruption. Case assigned/processed by agent on 8/27/2025. No additional AE/ N; sore arm; fat…
covid like symptoms; Flu like symptoms; Brain fog; severe muscle weakness; inability to sleep; fatigue; knocked her off her feet; This non-serious case was reported by a consumer via call center representative and described the occurrence of covid-19 in a 55-y…
given Twinrix as dose number one in the series Then the doctor gave me a different vaccine for Hep B only as the second dose; This non-serious case was reported by a consumer via call center representative and described the occurrence of incomplete course of v…
possible redness at the injection site; possible swelling at the injection site; This non-serious case was reported by a nurse via sales rep and described the occurrence of injection site erythema in a patient who received Men ACWY-CRM NVS (Menveo) for prophyl…
cut finger/sliced the thumb with the glass; Syringe issue; Product complaint; This non-serious case was reported by a pharmacist via call center representative and described the occurrence of laceration of finger in a male patient who received Herpes zoster (S…
Engeirx-B adult dose administration in a 18-year-old patient; Overdose; This non-serious case was reported by a nurse via call center representative and described the occurrence of adult product administered to child in a 18-year-old female patient who receive…
pain around the injection site; swelling around the injection site; Injection site warmth; redness around the injection site; This non-serious case was reported by a consumer via call center representative and described the occurrence of injection site pain in…
Suspected vaccination failure; Shingles; This serious case was reported by a consumer via call center representative and described the occurrence of vaccination failure in a elderly female patient who received Herpes zoster (Shingles vaccine) for prophylaxis.…