For the treatment and prevention of Coccidiosis, Canker and Worms via the drinking water.

Harkers 3 in 1:

  • For oral administration only
  • Mix 6ml in 1 litre of drinking water for 7 days
  • Not to be used during breeding
  • Precautionary worming is advised 3 weeks before the start of breeding.
  • Contains Amprolium hydrochloride, Levamisole hydrochloride and Ronidazole

Key Features: Tried, tested and approved by leading fanciers in the UK. Takes the hassle away from treating Birds with three separate medications.


Harkers 3 in 1 Soluble application: 6ml (one capful) of 3 in 1 Soluble to 1 litre of drinking water each day for 7 days. One bottle sufficient to treat 30 birds. Always make a fresh solution daily. Do not allow the birds to drink from any other source. Should not be used during moul
Active ingredients: Amprolium hydrochloride 3.8% w/v (38mg/ml), Levamisole hydrochloride 1.7% w/v (17mg/ml), Ronidazole 1.2% w/v (12mg/ml).


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Returns policy

Mark’s Hand Reared Birds Cages & Accessories accepts returns within 14 days if products are not used, changed, washed or otherwise manipulated. Products need to be returned in original packaging. No products may be returned to Mark’s Hand Reared Birds Cages & Accessories without the prior written consent of Mark’s Hand Reared Birds Cages & Accessories and are subject to a return charge.

Cancelling your order

As a customer, you are free to cancel an order within 14 days and will be refunded amount of your order to their account the order originally was paid from.