"The US Food and Drug Administration has approved tenofovir alafenamide (Vemlidy, Gilead Sciences) 25 mg once daily, for treatment of adults with chronic hepatitis B virus (HBV) infection with compensated liver disease, the company announce"...
Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a vaccine cannot be directly compared to rates in the clinical trials of another vaccine and may not reflect the rates observed in practice.
The most common solicited adverse events were injection site soreness (22%) and fatigue (14%).
In 36 clinical studies, a total of 13,495 doses of ENGERIX-B were administered to 5,071 healthy adults and children who were initially seronegative for hepatitis B markers, and healthy neonates. All subjects were monitored for 4 days post-administration. Frequency of adverse events tended to decrease with successive doses of ENGERIX-B.
Using a symptom checklist, the most frequently reported adverse events were injection site soreness (22%) and fatigue (14%). Other events are listed below. Parent or guardian completed forms for children and neonates. Neonatal checklist did not include headache, fatigue, or dizziness.
Incidence 1% to 10% of Injections
Nervous System Disorders: Dizziness, headache.
Incidence < 1% of Injections
Infections and Infestations: Upper respiratory tract illnesses.
Blood and Lymphatic System Disorders: Lymphadenopathy.
Metabolism and Nutrition Disorders: Anorexia.
Psychiatric Disorders: Agitation, insomnia.
Nervous System Disorders: Somnolence, tingling.
Vascular Disorders: Flushing, hypotension.
Gastrointestinal Disorders: Abdominal pain/cramps, constipation, diarrhea, nausea, vomiting.
In a clinical trial, 416 adults with type 2 diabetes and 258 control subjects without type 2 diabetes who were seronegative for hepatitis B markers received at least one dose of ENGERIX-B. Subjects were monitored for solicited adverse events for 4 days following each vaccination. The most frequently reported solicited adverse events in the entire study population were injection site pain (reported in 39% of diabetic subjects and 45% of control subjects) and fatigue (reported in 29% of diabetic subjects and 27% of control subjects). Serious adverse events were monitored through 30 days following the last vaccination. Serious adverse events (SAEs) occurred in 3.8% of diabetic subjects and 1.6% of controls. No SAEs were deemed related to ENGERIX-B.
In addition to reports in clinical trials, worldwide voluntary reports of adverse events received for ENGERIX-B since market introduction (1990) are listed below. This list includes serious adverse events or events that have a suspected causal connection to components of ENGERIX-B.
Because these events are reported voluntarily from a population of unknown size, it is not always possible to reliably estimate their frequency or establish a causal relationship to the vaccine.
Infections and Infestations
Blood and Lymphatic System Disorders
Immune System Disorders
Allergic reaction, anaphylactoid reaction, anaphylaxis. An apparent hypersensitivity syndrome (serum sickness-like) of delayed onset has been reported days to weeks after vaccination, including: arthralgia/arthritis (usually transient), fever, and dermatologic reactions such as urticaria, erythema multiforme, ecchymoses, and erythema nodosum.
Nervous System Disorders
Encephalitis, encephalopathy, migraine, multiple sclerosis, neuritis, neuropathy including hypoesthesia, paresthesia, Guillain-Barre syndrome and Bell's palsy, optic neuritis, paralysis, paresis, seizures, syncope, transverse myelitis.
Ear and Labyrinth Disorders
Respiratory, Thoracic, and Mediastinal Disorders
Skin and Subcutaneous Tissue Disorders
Musculoskeletal and Connective Tissue Disorders
Arthritis, muscular weakness.
General Disorders and Administration Site Conditions
Injection site reaction.
Abnormal liver function tests.
Read the Engerix-B (hepatitis b vaccine recombinant) Side Effects Center for a complete guide to possible side effects
Concomitant Administration With Vaccines And Immune Globulin
ENGERIX-B may be administered concomitantly with immune globulin.
When concomitant administration of other vaccines or immune globulin is required, they should be given with different syringes and at different injection sites. Do not mix ENGERIX-B with any other vaccine or product in the same syringe or vial.
Interference With Laboratory Tests
Hepatitis B surface antigen (HBsAg) derived from hepatitis B vaccines has been transiently detected in blood samples following vaccination. Serum HBsAg detection may not have diagnostic value within 28 days after receipt of a hepatitis B vaccine, including ENGERIX-B.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 11/16/2015
Additional Engerix-B Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Find out what women really need.