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Anthelmintics

# Zero Milk Withdrawal: What It Means for Dairy Farmers

Treat lactating cows without discarding milk. Understanding zero milk withdrawal products and how they protect both your herd and your income.

SA
System Admin
28 September 2025
5 min read
Article #02
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## What Is Milk Withdrawal?

When you treat a lactating cow with a veterinary medicine, chemical residues can pass into the milk. A milk withdrawal period is the minimum time that must elapse after treatment before the milk is safe for human consumption. During this period, all milk must be discarded — a direct financial loss to the farmer.

For smallholder dairy farmers in East Africa, where daily milk sales are a primary income source, even a few days of withdrawal can cause significant hardship. This often leads farmers to delay or skip deworming entirely, resulting in reduced productivity and animal suffering.

## How Zero Withdrawal Products Work

Zero milk withdrawal anthelmintics are formulated so that drug residues in milk remain below the Maximum Residue Limit (MRL) set by international food safety authorities, even immediately after treatment. This means farmers can continue selling milk without interruption.

Sanga Worm & Fluke Drench® achieves zero milk withdrawal through its specific combination of Levamisole and Oxyclozanide at concentrations that provide full therapeutic efficacy while maintaining milk safety. The product has been tested and approved by the National Drug Authority (NDA) of Uganda.

## Benefits for Dairy Operations

- No lost income — continue selling milk immediately after treatment
- Better compliance — farmers are more likely to deworm on schedule when there is no financial penalty
- Healthier herds — regular deworming improves feed conversion, milk yield, and body condition
- Consumer safety — products are NDA-licensed with verified residue data

### Recommended Deworming Schedule

For dairy cattle in East Africa, we recommend strategic deworming at least 3–4 times per year, timed around the onset and end of rainy seasons when parasite burdens are highest. With a zero milk withdrawal product, there is no reason to delay treatment during peak lactation.

SA
System Admin
Sanga Vet. Chem. Ltd

This article was written by a member of the Sanga Vet. Chem. Ltd team. For specific veterinary advice, please consult a qualified veterinarian.

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