Comprehensive medication guide to Rabies Immune Globulin, Human including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
$0–$300+ patient copay depending on plan; most commercial insurers, Medicare, and Medicaid cover HRIG when post-exposure prophylaxis is medically necessary after a documented animal exposure. Coverage is strongest for ER-administered PEP. Outpatient PEP may require prior authorization.
Estimated Cash Pricing
$686–$1,500+ per vial depending on brand and weight-based dosing (20 IU/kg); full post-exposure prophylaxis course including HRIG plus 4 doses of rabies vaccine typically costs $2,500–$7,000 out of pocket. No generic or coupon pricing applicable — HRIG is administered only in clinical settings.
Medfinder Findability Score
72/100
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Rabies immune globulin, human (HRIG) is a concentrated, plasma-derived biologic made from the blood of healthy human donors who have been hyperimmunized with rabies vaccine. It contains a high concentration of rabies virus neutralizing antibodies (RVNA) — standardized to at least 150 IU/mL (or 300 IU/mL for HyperRAB) — that provide immediate passive immunity against the rabies virus.
HRIG is FDA-approved exclusively for post-exposure prophylaxis (PEP) of rabies in previously unvaccinated individuals who have been exposed to a potentially rabid animal through a bite, scratch, or mucous membrane contact. It is always administered alongside the first dose of rabies vaccine. HRIG by itself does not provide long-term protection — it must be paired with the full rabies vaccine series.
Three brands are FDA-licensed in the United States: HyperRAB (Grifols, 300 IU/mL), KedRAB/KEDRAB (Kedrion/Kamada, 150 IU/mL), and Imogam Rabies-HT (Sanofi, 150 IU/mL). All three are equally effective. HyperRAB requires half the volume of the other products due to its higher concentration. There is no generic form of HRIG.
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HRIG provides passive immunization — it delivers pre-formed, ready-to-use antibodies that immediately bind to and neutralize the rabies virus at the site of exposure. The rabies virus spreads by traveling along nerve axons from the wound site toward the brain and spinal cord. By flooding the wound site with high concentrations of neutralizing antibodies, HRIG prevents the virus from attaching to nerve cells and initiating this dangerous journey.
Passive antibodies from HRIG appear in the bloodstream within 24 hours and have a serum half-life of approximately 21 days. This window of passive immunity bridges the critical gap between the time of exposure and the time it takes the rabies vaccine to stimulate active immunity — approximately 7 to 14 days. After Day 7, HRIG is no longer indicated because the vaccine-induced immune response should be underway; administering HRIG after this point can suppress the active immunity the vaccine is building.
The HRIG dose (20 IU/kg) is precisely calibrated: too little leaves the wound site vulnerable; too much — more than twice the recommended dose — can suppress the vaccine's immune response. HRIG must be physically infiltrated into and around the wound whenever anatomically feasible, not simply injected into a distant muscle.
20 IU/kg body weight (single dose) — solution for infiltration and IM injection
Weight-based dosing; administer Day 0 with first rabies vaccine dose, up to Day 7 maximum
HyperRAB: 300 IU/mL — solution for injection (1 mL/300 IU and 5 mL/1,500 IU vials)
Higher concentration — requires half the volume of 150 IU/mL products for same dose
KedRAB / Imogam Rabies-HT: 150 IU/mL — solution for injection (2 mL vials)
Standard concentration — requires twice the volume of HyperRAB for same dose
As of 2026, the CDC confirms there is no national shortage of HRIG in the United States. However, HRIG is not available at retail pharmacies — it is stocked exclusively in clinical settings. Most large hospital emergency departments carry HRIG 24/7. Travel medicine clinics, infectious disease clinics, and public health departments also commonly stock it. Smaller urgent care centers, rural clinics, and community health centers may not.
Geographic access is the primary challenge: patients in rural or remote areas may face significant travel to reach a facility with HRIG in stock. Cost is also a barrier — the full PEP course can cost $2,500–$7,000 without insurance, and manufacturer patient assistance programs are available but not always proactively offered.
If you've been exposed and need to quickly identify which facility near you stocks HRIG, medfinder contacts facilities near you and texts you the results — so you can find care quickly without calling multiple hospitals yourself.
HRIG is not a controlled substance and is not subject to specialty-specific prescribing restrictions. Any licensed physician or advanced practice provider (NP, PA) working in an emergency, urgent care, travel medicine, infectious disease, occupational health, or public health setting can prescribe and administer HRIG — as long as their facility stocks it.
Provider types who commonly administer HRIG:
Emergency Medicine Physicians and APPs (most common — 24/7 availability)
Infectious Disease Specialists
Travel Medicine Specialists
Urgent Care Physicians and APPs (facilities that stock HRIG)
Occupational Health Physicians
Public Health Department Clinicians
Telehealth cannot replace in-person HRIG administration — the injection must be given by a clinician at a stocking facility. However, telehealth consultation can help assess exposure risk, coordinate follow-up vaccine doses, and provide guidance on whether PEP is indicated. Patients should always go to the nearest hospital ER immediately after a potential rabies exposure.
No. Rabies immune globulin, human (HRIG) is not a controlled substance. It is not scheduled under the DEA Controlled Substances Act and is not subject to the prescribing restrictions, refill limitations, or monitoring requirements that apply to scheduled medications.
HRIG is a prescription-only biologic, but its prescription and administration occur in the same clinical encounter — a physician orders and administers it on-site. It cannot be dispensed at a retail pharmacy and taken home. Prescribing is not restricted to any particular specialty — emergency physicians, infectious disease specialists, travel medicine doctors, urgent care providers, and public health clinicians all routinely prescribe and administer it.
Most side effects are mild and resolve on their own:
Injection site pain (most common)
Injection site nodule
Headache
Abdominal pain, diarrhea, flatulence
Nasal congestion
Anaphylaxis (severe allergic reaction): hives, difficulty breathing, swelling of face/throat — call 911 immediately
Thromboembolism (blood clots): swelling, pain in extremities, chest pain, shortness of breath
Hemolysis: fatigue, pale or yellowed skin, dark urine
Aseptic meningitis: severe headache, fever, stiff neck, light sensitivity — rare but requires immediate care
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Equine Rabies Immune Globulin (ERIG)
Used in developing countries; not FDA-approved in the US. Less expensive but higher rate of adverse reactions including serum sickness. Administered at 40 IU/kg (double the HRIG dose).
Monoclonal antibody cocktails (TwinRab — docaravimab/miromavimab)
Emerging alternative being studied by WHO; approved in China and India since 2016. Not FDA-approved in the US as of 2026. Offers advantages: precise dosing, no blood-borne disease risk, lower adverse reaction rates.
RabAvert (purified chick embryo cell vaccine)
Not a replacement for HRIG — paired with HRIG as part of the PEP regimen. One of two FDA-approved rabies vaccines; holds ~77% of US market share.
Imovax (human diploid cell vaccine)
The other FDA-approved rabies vaccine; used alongside HRIG in PEP. Preferred for patients with severe egg allergies. Manufactured by Sanofi Pasteur.
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Live vaccines (MMR, varicella, yellow fever, typhoid, polio, rotavirus)
majorHRIG passive antibodies can interfere with live vaccine immune response. Wait 4 months before measles vaccine; 3 months for other live vaccines. Does NOT apply to rabies vaccine.
CAR-T cell therapies (axicabtagene, brexucabtagene, ciltacabtagene, idecabtagene, lisocabtagene, tisagenlecleucel)
majorMutual pharmacodynamic immunosuppression; increased infection risk. Avoid or use alternate approach — consult oncology team for rabies-exposed CAR-T patients.
Efgartigimod alfa (Vyvgart) / efgartigimod/hyaluronidase (Vyvgart Hytrulo)
moderateFcRn receptor competition reduces half-life and effectiveness of HRIG. Monitor closely; consider temporarily discontinuing efgartigimod during PEP window if essential.
BCG vaccine live
moderateHigh-dose immune globulin may impair active immunization response to BCG. Use caution and monitor; separate if possible.
Human rabies immune globulin is one of medicine's most effective emergency interventions — when used promptly, the combination of HRIG and the rabies vaccine is nearly 100% effective at preventing a nearly universally fatal disease. No other single post-exposure treatment in medicine has such a clear-cut, life-saving outcome.
The challenge is not efficacy — it is access. HRIG is not at your local pharmacy. It requires a clinical setting, cold-chain storage, and trained administration. In rural areas or at night, finding it quickly can be genuinely difficult. Cost can also be a barrier for uninsured patients, though manufacturer patient assistance programs and public health resources exist.
If you or someone you love has been exposed to a potentially rabid animal: wash the wound immediately and go to the nearest hospital ER. Don't wait. And if you need help identifying which facility near you stocks HRIG, medfinder is here to help — contacting facilities near you to find where you can get the care you need, fast.
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