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Levamisole Phosphate

This page contains information on Levamisole Phosphate for veterinary use.
The information provided typically includes the following:
  • Levamisole Phosphate Indications
  • Warnings and cautions for Levamisole Phosphate
  • Direction and dosage information for Levamisole Phosphate

Levamisole Phosphate

This treatment applies to the following species:
Manufacturer: AgriLabs

Injectable Solution, 13.65%



For Subcutaneous Injection In Cattle

Anada 200-271, Approved By Fda

Levamisole Phosphate is a sterile solution recommended for the treatment of cattle infected with the following parasites. Each mL of solution contains levamisole phosphate equivalent to 136.5 mg of levamisole hydrochloride.

Stomach Worms

(Haemonchus, Ostertagia, Trichostrongylus)

Intestinal Worms

(Trichostrongylus, Cooperia, Nematodirus, Bunostomum, Oesophagostomum, Chabertia)




Inject subcutaneously in the mid-neck region at the rate of 2 mL per 100 lb body weight. It is recommended that no more than 10 mL be injected at one site.

Consult Your Veterinarian For Assistance In The Diagnosis, Treatment, And Control Of Parasitism.

The maturation of some helminth species may be arrested at 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 by swabbing with 70% alcohol or other suitable disinfectant, and the proper method of administration under a fold of skin in the mid-neck region are demonstrated below. A clean, sterile needle should be used for each animal to avoid spreading infection.

Levamisole Phosphate Caution

Careful cattle weight estimates are essential for proper performance of this product. It is recommended that Levamisole Phosphate 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 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 stress should be avoided when using this product.

Consult veterinarian before using in severely debilitated animals.

Available in 500 mL vials

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.

Warning: Keep This And All Drugs Out Of The Reach Of Children.

Storage Conditions: To Assure Maximum Potency And Efficacy,

Store At Or Below 70°f

Refrigeration Advisable

Avoid Freezing.


Iss. 5-00

Mfd. For: Agri Laboratories, Ltd., St. Joseph, MO 64503

Nac No.

20927 STATE ROUTE K, P.O. BOX 3103 (64503), ST. JOSEPH, MO, 64505
Telephone:   816-233-9533
Order Desk:   800-542-8916
Fax:   816-233-9546
Every effort has been made to ensure the accuracy of the Levamisole Phosphate 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 © 2018 North American Compendiums. Updated: 2018-03-29