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Skycis 100

This page contains information on Skycis 100 for veterinary use.
The information provided typically includes the following:
  • Skycis 100 Indications
  • Warnings and cautions for Skycis 100
  • Direction and dosage information for Skycis 100

Skycis 100

This treatment applies to the following species:
Company: Elanco US


For Use in Swine Feeds Only

Type A Medicated Article

Do Not Feed Undiluted

Important: Must be thoroughly mixed into feeds before use. Follow label directions.


Skycis 100 Indications

Appropriate Concentration of Narasin in Type C Medicated Feed

For increased rate of weight gain in growing-finishing swine when fed for at least 4 weeks

13.6 to 27.2 g/ton (15 ppm to 30 ppm)

For increased rate of weight gain and improved feed efficiency in growing-finishing swine when fed for at least 4 weeks

18.1 to 27.2 g/ton (20 ppm to 30 ppm)

No increased benefit in rate of weight gain has been shown when narasin concentrations in the diet are greater than 15 ppm (13.6 g/ton).

Active Ingredients

Narasin - 100 g per kg

Inactive Ingredients

Roughage products.

Feeding Directions: Feed continuously for at least four weeks to swine during the growing-finishing period as the sole ration. Effectiveness has not been demonstrated when fed for durations less than four weeks.

Mixing Directions: Thoroughly mix Skycis 100 Type A Medicated Article with non-medicated swine feed according to the table below to obtain the proper concentration in the Type B Medicated Feed (maximum 5,400 g/ton). The following table gives examples of how some Type B Medicated Feed concentrations can be prepared:

Pounds of Skycis 100 To Add per Ton To Make a Type B Medicated Feed

Resulting Narasin Concentration in Type B Medicated Feed [grams/ton (grams/pound)]


2,500 (1.25)


5,000 (2.50)

Thoroughly mix Skycis 100 Type A Medicated Article with a complete swine feed according to the table below to obtain the proper concentration in the Type C Medicated Feed. Prepare an intermediate pre-blend of the premix prior to mixing in a complete feed. Thoroughly mix the required amount in a convenient quantity of feed ingredients, then add to the remaining feed ingredients to make complete feed.

Pounds of Skycis 100 to Add Per Ton of Type C Medicated Feed

Resulting Narasin Concentration in Type C Medicated Feed

0.3 lb

13.6 g/ton (15 ppm)

0.4 lb

18.1 g/ton (20 ppm)

0.6 lb

27.2 g/ton (30 ppm)

Skycis 100 Caution

Do not allow adult turkeys, horses or other equines access to narasin formulations. Ingestion of narasin by these species has been fatal. Not approved for use in breeding animals because safety and effectiveness have not been evaluated in these animals.

Swine being fed with Skycis (narasin) should not have access to feeds containing pleuromutilins (e.g., tiamulin) as adverse reactions may occur. If signs of toxicity occur, discontinue use.



Withdrawal Period

No withdrawal period is required when used according to the label

When mixing and handling Skycis, use protective clothing, impervious gloves and a dust mask. Operators should wash thoroughly with soap and water after handling. If accidental eye contact occurs, immediately rinse thoroughly with water.

Store at or below 25°C (77°F). Excursions permitted to 37°C (99°F).

Not to be used after the date printed on the bag.

To report adverse effects, access medical information, or obtain additional product information, call 1-800-428-4441.

Skycis 100

Manufactured For: Elanco US Inc., Greenfield, IN 46140, USA

Restricted Drug (California) - Use Only as Directed

Approved by FDA under NADA # 141-340

Skycis, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates.

Net Weight:



25 kg (55.12 lb)



CPN: 1131070.1

Customer Service:   317-276-1262
Technical Service:   800-428-4441
THIS SERVICE AND DATA ARE PROVIDED "AS IS". DVMetrics assumes no liability, and each user assumes full risk, responsibility, and liability, related to its use of the DVMetrics service and data. See the Terms of Use for further details.

Copyright © 2023 Animalytix LLC. Updated: 2023-05-30