Hydrocortisone and Tetanus Toxoid: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Hydrocortisone
Tetanus Toxoid
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
An inadequate immunological response to the vaccine
Interaction Deep Dive
Steroid therapy less than 2 mg/kg of body weight or less than 20 mg/day of prednisone or equivalent for persons who weigh more than 10 kg when administered for less than 14 days is not sufficiently immunosuppressive to raise concern about the safety of vaccination with live-virus vaccines. The immune response to vaccines can be reduced in patients who receive greater than physiologic doses of corticosteroids. Live-virus vaccination should be deferred for at least 1 month after discontinuation of high-dose systemically absorbed corticosteroid therapy administered for more than 14 days. When initiating immunosuppressive therapy, providers should wait 4 weeks after a live vaccine and 2 weeks after an inactivated vaccine. If patients require therapy for chronic inflammatory conditions, therapy should not be delayed because of past administration of vaccines. Short term (less than 14 days); a low to moderate dose (less than 20 mg/day of predniSONE or equivalent); long-term, alternate-day treatment with short-acting preparations; maintenance physiologic doses; or topical (skin or eyes), inhaled, or by intraarticular, bursal, or tendon injection therapy is not considered sufficiently immunosuppressive to create vaccine safety concerns and is not a contraindication for administration of live-virus vaccine1.
Why it happens (mechanism)
Suppression of the immune system
Common questions
Can I take Hydrocortisone and Tetanus Toxoid together?
An inadequate immunological response to the vaccine Always confirm with your pharmacist or prescriber before making any change.
How serious is the Hydrocortisone and Tetanus Toxoid interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "delayed". Effects tend to build up gradually over days to weeks.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Hydrocortisone or Tetanus Toxoid need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Advisory Committee on Immunization Practices (ACIP): Vaccine recommendations and guidelines of the ACIP: altered immunocompetence. Centers for Disease Control and Prevention (CDC). Atlanta, GA. 2017.
Keep reading about Hydrocortisone
Keep reading about Tetanus Toxoid
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist