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L-S 50 Water Soluble® Powder

(lincomycin-spectinomycin) Antibacterial & Antimycoplasmal

L-S 50 Water Soluble® Powder is recommended for chicks up to seven days-of-age as an aid in the control of:

  • Airsacculitis caused by either Mycoplasma synoviae or M. gallisepticum (Chronic Respiratory Disease – CRD)
  • Complicated Chronic Respiratory Disease (CCRD) caused by Escherichia coli and Mycoplasma gallisepticum


It is the combination of two antibiotics—lincomycin and spectinomycin—and provides the following benefits:

  • Zero withdrawal period
  • Safe and efficacious
  • Broad spectrum
  • Gram positive
  • Gram negative

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  • Dosage:

    Provide 2 grams antibiotic activity per gallon of drinking water. Administer as the sole source of water for the first 5 to 7 days of life.

    Drinking Water Administration:

    • 1 bottle of L-S 50 for every 25 gallons of drinking water
    • For proportioners delivering 1 ounce of solution per gallon of drinking water, dissolve contents of 5 bottles in each gallon of proportioner solution.

    Important: Chickens should consume water at the following approximate rate to insure intake of the required dose of lincomycin-spectinomycin indicated:

    • Discard medicated drinking water daily and replace with fresh medicated drinking water.
    • Restricted Drug (California)-Use Only as Directed

    Storage and Handling:

    • Store at controlled room temperature 68° – 77° F (20° – 25° C).


  • Not for human use.



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