When to Repeat Antivenom (WHO SEARO, AFRO, and India)
Says whether and when to repeat antivenom after a snakebite.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Protocol
- India national guideline (2016)
- India regimen
- India: neuroparalytic (10 vials)
- Hours since the initial dose ended
- 1
- 20WBCT now
- Clots
- Still bleeding briskly
- No
- Neurotoxic or cardiovascular signs
- Unchanged
- Paralyzed and on a ventilator
- No
- Vials given so far
- 10
Result: Repeat now: 10 vials (India's second neuroparalytic dose). The signs have not improved 1 hour or more after the dose.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Protocol
- India regimen
- Initial dose in vials (product insert or national protocol; India mode sets its own)
- Hours since the initial dose ended
- 20WBCT now
- Still bleeding briskly
- Neurotoxic or cardiovascular signs
- Paralyzed and on a ventilator
- Vials given so far (checked against India's limits)
How this is calculated
Citation
Warrell DA, for WHO SEARO. Guidelines for the management of snakebites. 2nd ed. 2016, pp. 142-143, 191. WHO AFRO. Snakebite in Africa guidelines. 2010, p. 80. India MoHFW. Standard treatment guidelines: snake bite. 2016, pp. 36, 39-41. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.