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Levasole Injectable Solution, 13.65%

This page contains information on Levasole Injectable Solution, 13.65% for veterinary use.
The information provided typically includes the following:
  • Levasole Injectable Solution, 13.65% Indications
  • Warnings and cautions for Levasole Injectable Solution, 13.65%
  • Direction and dosage information for Levasole Injectable Solution, 13.65%

Levasole Injectable Solution, 13.65%

This treatment applies to the following species:
Company: Intervet/Merck Animal Health

(levamisole phosphate)



For Subcutaneous Injection in Cattle

Each mL of solution contains levamisole phosphate equivalent to 136.5 mg of levamisole hydrochloride.

NADA #102-437, Approved by FDA

RECOMMENDATIONS: LEVASOLE (levamisole phosphate) is a broad-spectrum anthelmintic and is effective in the following nematode infections in cattle:

STOMACH WORMS: (Haemonchus, Ostertagia, Trichostrongylus)

INTESTINAL WORMS: (Trichostrongylus, Cooperia, Nematodirus, Bunostomum, Oesophagostomum, Chabertia)

LUNGWORMS: (Dictyocaulus)


Inject subcutaneously in the mid-neck region at the rate of 2 mL per 100 lb body weight. It is recommended that not more than 10 mL be injected at one site.

The maturation of some helminth species may be arrested at a pre-adult stage when adult worm populations are heavy.

Cattle that are severely parasitized or maintained under conditions of constant helminth exposure may require retreatment with two to four weeks after the first treatment.


Thoroughly clean and disinfect syringes and needles by boiling in water for twenty minutes. Use 14 or 16 gauge 1/2 to 1 inch needles.

Do not remove rubber stopper from the bottle, but clean and disinfect it with 70% alcohol. With syringe attached to needle, insert needle through the rubber stopper and withdraw the required dose.

The proper method of injection site preparation, is swabbing with 70% alcohol or other suitable disinfectant, and the proper method of administration is under a fold of the skin in the mid-neck region as demonstrated in the Figures. A clean sterile needle should be used for each animal to avoid spreading infection.

Levasole Injectable Solution, 13.65% Caution:

Careful cattle weight estimates are essential for the proper performance of this product. It is recommended that Levasole Injectable Solution, 13.65% be injected only in cattle in stocker or feeder condition. Cattle nearing slaughter weight and condition may show objectionable reactions at the site of injection. An occasional animal in stocker or feeder flesh may show swelling at the injection site. The swelling will subside in 7 to 14 days and is no more severe than that observed from commonly used vaccines and bacterins.

The mid-neck region is the preferred injection site. Always use sterile needles and syringes. Non-sterile equipment may cause abscesses at the site of injection. Contents should be used as soon as possible after the seal has been broken. It is recommended that the cap be wiped with alcohol prior to withdrawing solution. Also, skin at the injection site should be swabbed with alcohol to avoid infection.

Muzzle foam may be observed; however, this reaction will disappear within a few hours. If this condition persists, a veterinarian should be consulted. Follow recommended dosage carefully.

Experience under field conditions indicates that stressful procedures such as vaccination, castration, dehorning, concurrent exposure to cholinesterase-inhibiting drugs, pesticides, or chemicals, may increase the risk associated with the use of this product. Such concurrent stresses should be avoided when using this product.

Consult a veterinarian before using in severely debilitated animals.


Do not administer to cattle within 7 days of slaughter for food to avoid tissue residues. To prevent residues in milk, do not administer to dairy animals of breeding age.


Consult your veterinarian for assistance in the diagnosis, treatment and control of parasitism.





Rev. 10/97

Manufactured for Schering-Plough Animal Health Corp.

Copyright © 1996, Schering-Plough Animal Health Corp., Union, NJ 07063. All rights reserved.

By: Boehringer Ingelheim Animal Health, Inc., St. Joseph, MO 64506



500 mL


NAC No.: 10471175

Intervet Inc.

Customer Service:   800-521-5767
Order Desk:   800-648-2118
Technical Service (Companion Animal):   800-224-5318
Technical Service (Livestock):   800-211-3573
Fax:   973-937-5557
Every effort has been made to ensure the accuracy of the Levasole Injectable Solution, 13.65% information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the US product label or package insert.

Copyright © 2019 Animalytix LLC. Updated: 2019-09-30