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By G.C. Hanford



Each 10 ml syringe contains:  Penicillin G Procaine 100,000 units, sesame oil 8.7g, calcium carbonate 0.089g, corn starch 0.089g, hydrogenated castor oil 0.044g.


Indications for Use:

This product is intended for the treatment of bovine mastitis in lactating cows.  This product is effective against udder infection caused by the following susceptible microorganism:  Streptococcus agalactiae, Streptococcus dysgalactiae, and Streptococcus uberis.  For the best results, it should be used promptly at the first signs of mastitis.



The dose is 10mL of this product per infected quarter administered by intramammary infusion.  Treatment may be repeated at intervals of 12 hours.  Do not administer more than three consecutive doses.



Milk out udder completely.  Wash udder and teats thoroughly with warm water containing a suitable dairy disinfectant.  Dry thoroughly.  The hands of the operator should be washed and dried before administration of each treatment.  Using the alcohol pads that are provided with each syringe wipe off teat, using a separate pad for each teat.  Appropriate sanitation and management procedures to prevent and/or control bovine mastitis should be instituted. 


When using this product, remove plastic cover from tip of syringe and, while holding teat firmly, insert tip into streak canal, then push plunger and inject entire contents.  After injection, grasp the end of the teat firmly, then gently massage the medication up the teat canal in to the milk cistern.


Treated quarters should not be milked for at least six hours after treatment but should be milked at regular intervals thereafter.  Treatment may be repeated at 12 hour intervals, up to a total of three doses, as indictaed by the clinical response.


NIOTE:  Mastitis cannot be considered cured until bacteriologic examination of milk samples taken approximately three weeks after treatment demonstrates the absence of causative microorganisms.


Withdrawal Periods and Residue Warnings:

Animals intended for human consumption must not be slaughtered within 3 days of the last treatment with Masti-Clea®.


Discard all milk for 60 hours (5 milkings) after latest treatment.


Use of this product in a manner other than as directed in the labeling might result in violative residues.



Administration of this product in any manner other than shown under DOSAGE may result in drug residues.


It is a violation of Federal law to use Masti-Clear® in food-producing animals other than as directed in the labeling.


If abnormal milk, redness or swelling persists or increases discontinue use and consult your veterinarian.


Person with known hypersensitivity to penicillin should avoid exposure to this product.




Store at Controlled Room Temperature:  20-25°C (68-77°F).



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