Synanthic Dewormer 22.5% : 500ml



Shipping calculated at checkout

Available Now!

Synanthic Dewormer 22.5% from Boehringer Ingelheim is a broad-spectrum dewormer for removal and control of lungworms, barberpole worms, stomach worms, nodular worms, hookworms, tapeworms, and roundworms, including inhibited Ostertagia. Each mL contains 225 mg of oxfendazole. Shake well before use. Limited Supply

INDICATIONS: Synanthic Bovine Dewormer Suspension, 22.5%, is a broad-spectrum anthelmintic effective for the removal and control of the following parasites in cattle: lungworms, roundworms (including inhibited forms of Ostertagia ostertagi) and tapeworms, as indicated below:

Lungworms: Dictyocaulus viviparus (Adult, L4)

Stomach Worms

Barberpole Worms: Haemonchus contortus (Adult), Haemonchus placei (Adult)

Small Stomach Worms: Trichostrongylus axei (Adult)

Brown Stomach Worms: Ostertagia ostertagi (Adult, L4, inhibited L4)

Intestinal Worms

Nodular Worms: Oesophagostomum radiatum (Adult)

Hookworms: Bunostomum phlebotomum (Adult)

Small Intestinal Worms: Cooperia punctata (Adult, L4), Cooperia oncophora (Adult, L4), Cooperia mcmasteri (Adult, L4)

Tapeworms: Moniezia benedeni (Adult)

ADMINISTRATION AND DOSAGE: Synanthic Bovine Dewormer Suspension, 22.5%, is supplied in 500 mL and 1000 mL packages containing 225 mg of oxfendazole per mL. The recommended dose for cattle is 2.05 mg/lb (4.5 mg/kg) of body weight. Synanthic Bovine Dewormer Suspension, 22.5%, should be administered orally by accurate dose syringe at the rate of 1 mL per 110 lb (50 kg) of body weight. This product should be shaken well immediately prior to use.

Remove Cap and Protective Seal and Replace with Blue Cap Prior to Use. Do Not Squeeze Sides of Bottle.


RESIDUE WARNINGS: Cattle must not be slaughtered until 7 days after treatment. Because a withdrawal time in milk has not been established, do not use in female dairy cattle of breeding age.


SAFETY: There are no contraindications for the use of Synanthic Bovine Dewormer Suspension, 22.5%, in cattle.

DIRECTIONS: Determine the proper dose according to estimated body weight. Administer orally. The recommended dose of 2.05 mg/lb (4.5 mg/kg) is achieved when 1 mL of the suspension is given for each 110 lb (50 kg) of body weight.




110 lb (50 kg)

1.0 mL

220 lb (100 kg)

2.0 mL

330 lb (150 kg)

3.0 mL

440 lb (200 kg)

4.0 mL

550 lb (250 kg)

5.0 mL

660 lb (300 kg)

6.0 mL

770 lb (350 kg)

7.0 mL

880 lb (400 kg)

8.0 mL

990 lb (450 kg)

9.0 mL

1100 lb (500 kg)

10.0 mL

Treatment may be repeated in 4-6 weeks.

CAUTION: Use only as directed. Keep out of reach of children. Not for human use.

Manufacturer and/or Label Information