Synanthic Dewormer 22.5% 500ml


Synanthic Dewormer 22.5% 500ml.

Boehringer Ingelheim - Each mL of Synanthic Cattle Dewormer 22.5% contains 225 mg. of oxfendazole. 

Dosage gun sold separately!


Synanthic (oxfendazole) Bovine Dewormer Suspension for Cattle is broad-spectrum oral cattle dewormer for the treatment and control of lungworms, all major roundworms, nodular worms, tapeworms and inhibited ostertagia. Readily absorbed for fast and effective control—absorbed in the gastrointestinal tract reaching peak potency within 20 hours post-administration. Low-volume, concentrated dosing allows more treatments per bottle. The active ingredient, oxfendazole 22.5% removes and controls multiple species of stomach worms and intestinal worms, lungworm, and tapeworm. Labeled for: beef and dairy cattle (do not use female dairy cattle of breeding age), and calves.

Species: cattle, calf


Broad-spectrum dewormer, effective in controlling common internal parasites which affect beef and dairy cattle.

Ideal for cows or processing calves on arrival.

Readily absorbed into the intestinal tract, rapidly working to reduce the parasite population.


7-day slaughter withdrawal.

Do not use in female dairy cattle of breeding age.

Keep away from children. Not for human use.

Store at temperature not to exceed 104 °F. Protect from excessive heat. Do not freeze.

Controls and treats the following parasites:

Stomach worms: brown stomach worms (Ostertagia ostertagi; adult, L4, inhibited L4), barberpole worms (Haemonchus contortus; adult), Haemonchus placei (Adult), small stomach worms (Trichostrongylus axei; adult).

Intestinal Worms: small intestinal worms (Cooperia punctata; adult, L4), Cooperia oncophora (adult, L4), Cooperia surnabada (adult, L4), nodular worms (Oesophagostomum radiatum; adult), hookworms, (Bunostomum phlebotomum; adult).

Lungworms: Dictyocaulus viviparus (adult, L4).

Tapeworms: Moniezia benedeni (adult).


Shake this product well, immediately before use.

22.5% Suspension: Give orally at a dose rate of 1.0 ml per 110 lbs of bodyweight. Treatment may be repeated in 4 to 6 weeks.

Cattle Weight

Dose (22.5%)

110 lb

1 ml

220 lb

2 ml

330 lb

3 ml

440 lb

4 ml

550 lb

5 ml

660 lb

6 ml

770 lb

7 ml

880 lb

8 ml

990 lb

9 ml

1100 lb

10 ml


Specific References

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