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Cydectin Oral Drench

Generic name: moxidectin liquid

NADA 141-247, Approved by FDA

Contains 1 mg moxidectin/mL

For Treatment and Control of Infections Due to Internal Parasites of Sheep.

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


Cydectin Oral Drench for Sheep is a ready-to-use solution containing 0.1% moxidectin. Moxidectin is an endectocide in the milbemycin chemical class which shares the distinctive mode of action characteristic of macrocyclic lactones. Moxidectin acts by interfering with chloride channel-mediated neurotransmission in the parasite. This results in paralysis and elimination of the parasite.


Cydectin Oral Drench for Sheep, when administered at the recommended dose level of 0.2 mg moxidectin/2.2 lb (0.2 mg/kg) body weight, is effective in the treatment and control of adult and larval (L4) stages of the following internal parasites of sheep:


Haemonchus contortus - Adult and L4

Cooperia oncophora - Adult and L4

Teladorsagia circumcincta - Adult and L4

Oesophagostomum columbianum - Adult and L4

Teladorsagia trifurcata - Adult and L4

Oesophagostomum venulosum -Adult and L4

Trichostrongylus axei - Adult and L4

Nematodirus battus - Adult and L4

Trichostrongylus colubriformis - Adult and L4

Nematodirus filicollis - Adult and L4

Trichostrongylus vitrinus - Adult and L4

Nematodirus spathiger - Adult and L4

Cooperia curticei - Adult and L4


Cydectin Oral Drench is ready-to-use. Administer 1 mL per 11 lb (1 mL per 5 kg) body weight into the mouth of the sheep, using any standard drenching equipment. Check dose rates and equipment before drenching. Do not overdose. Do not mix with any other products before administration. Avoid contaminating the drench solution.


The recommended rate of administration for Cydectin Oral Drench for Sheep is 1 mL per 11 lb (5 kg) body weight to provide 0.2 mg moxidectin/2.2 lb (0.2 mg/kg) body weight. The table below will assist in the calculation of the appropriate volume of drench in 1.0 mL increments and it must be administered based on the weight of animal being treated.

Body Weight Dose Body Weight Dose
11 lb 5 kg 1 mL 99 lb 45 kg 9 mL
22 lb 10 kg 2 mL 110 lb 50 kg 10 mL
33 lb 15 kg 3 mL 121 lb 55 kg 11 mL
44 lb 20 kg 4 mL 132 lb 60 kg 12 mL
55 lb 25 kg 5 mL 143 lb 65 kg 13 mL
66 lb 30 kg 6 mL 154 lb 70 kg 14 mL
77 lb 35 kg 7 mL 165 lb 75 kg 15 mL
88 lb 40 kg 8 mL


Not for use in humans. Keep this and all drugs out of the reach of children. To obtain a copy of the material safety data sheet (MSDS) which provides more detailed occupational safety information or to report adverse reactions attributable to exposure to this product, call 1-866-638-2226.


Sheep must not be slaughtered for human consumption within 7 days of treatment. Because a withholding time in milk has not been established for this product, do not use in female sheep providing milk for human consumption.


Studies indicate that when moxidectin comes in contact with the soil, it readily and tightly binds to the soil and becomes inactive. Free moxidectin may adversely affect fish and certain aquatic organisms. Do not contaminate water by direct application or by improper disposal of drug containers.


Cydectin Oral Drench for Sheep has been formulated specifically for oral use in sheep and should not be given by any other route of administration. Do not use in sick, debilitated, or underweight animals. This product should not be used in other animal species as severe adverse reactions, including fatalities in dogs, may result.


A well-controlled U.S. study has demonstrated an adequate margin of safety to allow treatment of sheep four months of age and older with Cydectin Oral Drench. In this study no signs of toxicity were seen in sheep given up to 5 times the recommended dose. Reproductive safety studies evaluating the use of Cydectin Oral Drench in breeding ewes and rams have not been conducted in the U.S.


Store product at or below 77°F (25°C). Protect from light.


Do not contaminate water by direct application or by improper disposal of drug containers. Dispose of containers in an approved landfill or by incineration.

U.S. Patent No. 4,916,154 - used under license.

© 2010 Boehringer Ingelheim Vetmedica, Inc. All Rights Reserved.

Cydectin is a registered trademark of Boehringer Ingelheim Vetmedica, Inc.

Manufactured by:

Boehringer Ingelheim Vetmedica, Inc.

St. Joseph, MO 64506 U.S.A.

Liter - Front Label

Liter - Back Label

Liter - Front Label

Liter - Back label

Cydectin Oral Drench FOR SHEEP
moxidectin liquid
Product Information
Product Type OTC ANIMAL DRUG Item Code (Source) NDC:0010-3840
Route of Administration ORAL DEA Schedule
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
# Item Code Package Description
1 NDC:0010-3840-01 1000 mL in 1 BOTTLE, PLASTIC
2 NDC:0010-3840-02 4000 mL in 1 BOTTLE, PLASTIC
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
NADA NADA141247 11/30/2005
Labeler - Boehringer Ingelheim Vetmedica, Inc. (007134091)
Boehringer Ingelheim Vetmedica, Inc.