withdrawal-times

Name: withdrawal-times
Availability: InStock
Author: OpenVet

Calculate withdrawal intervals for meat, milk, and eggs using FDA CVM tolerances and FARAD guidance.

27|6|Updated Mar 17, 2026

Search Tags:#pharmacology #withdrawal #veterinary #farad #food-safety #eldu #fda-cvm

Ready to run

npx skills add https://github.com/OpenVet-Projects/VetClaw --skill withdrawal-times

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: withdrawal-times
Source: https://github.com/OpenVet-Projects/VetClaw/tree/main/skills/pharma/withdrawal-times
Command: npx skills add https://github.com/OpenVet-Projects/VetClaw --skill withdrawal-times

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps veterinarians and farm managers determine safe withdrawal intervals for meat, milk, and eggs after drug administration, preventing violative residues.

Core Features & Use Cases

Withdrawal time lookup using FDA CVM tolerances and FARAD guidance for cattle, swine, poultry, sheep/goats.
ELDU considerations guidance for extralabel use and conservative withdrawal estimates when data are limited.
Reference sources including FARAD, Green Book, Plumb's Handbook, 21 CFR 556.

Quick Start

Query FARAD and label data to determine a safe withdrawal interval for the specified drug, species, and product.

Frequently Asked Questions about withdrawal-times

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I calculate withdrawal times for veterinary drugs in food-producing animals?▼

Calculate withdrawal times by querying FARAD and FDA CVM tolerance data alongside drug label information to determine safe intervals for meat, milk, and eggs. The skill applies these references to species like cattle, swine, and poultry to prevent violative residues.

What withdrawal interval should I use for extralabel drug use in cattle?▼

For extralabel drug use (ELDU), apply conservative withdrawal estimates when specific data is limited. The skill uses FARAD guidance to establish extended withdrawal intervals for meat, milk, and eggs, ensuring residue levels fall below FDA CVM tolerances.

How does FARAD guidance determine safe meat and milk withdrawal periods?▼

FARAD guidance determines safe withdrawal periods by comparing pharmacokinetic drug clearance data against FDA CVM tolerance levels in 21 CFR 556. This calculates the time required for drug residues in meat, milk, and eggs to fall to legally safe concentrations.

Can I find withdrawal times for small ruminants and poultry using this tool?▼

Yes, you can find withdrawal times for small ruminants and poultry alongside cattle and swine. The skill covers common food-producing species, referencing Green Book and Plumb's Handbook data to determine appropriate withdrawal intervals for meat, milk, and eggs.

What are the limitations of estimating withdrawal intervals when data is limited?▼

When data is limited, the limitation is relying on conservative withdrawal estimates rather than exact depletion times. This requires documenting decisions in the medical record and applying cautious extensions to ensure food safety compliance for meat, milk, and eggs.