Drugs (Anthelmintics) Commonly Used to Control Internal Parasites in Small Ruminants in the U.S.

Not all drugs are approved by the Food and Drug Administration for use in sheep and goats.  The mention of non-approved products is for informational purposes only. The use of non-approved drugs constitutes extra label drug use and can only be done legally under the advice of a licensed veterinarian. Sheep and/or goats may require different dosages and withdrawal periods than are listed on the label.

Trade Name Drug Ingredient

Chemical family

Approved Species Specificity Labeled Dosage for
approved species
Withdrawal time
for approved species

Cydectin® 0.5%
pour-on for cattle

Moxidectin ML1 beef cattle
non-lactating dairy cattle
roundworms
lungworms
external parasites
5 ml/110 lbs.
topical
cattle:  0 days slaughter

Cydectin® 1% injectable

Moxidectin ML

beef cattle

roundworms
lungworms
external parasites
1 ml/110 lbs. cattle: 21 days slaughter

Cydectin® oral
drench for sheep 0.1%

Moxidectin ML

sheep
Not for use in lactating
dairy sheep

roundworms
lungworms
external parasites
1 ml/11 lbs. by mouth
or 1 ml/5 kg
sheep: 7 days slaughter

Dectomax®
injectable 1%

Doramectin ML beef cattle
swine
roundworms
lungworms
external parasites
1 ml/110 lbs. (cattle)
1 ml/110 lbs (swine)
Sub Q or IM
cattle:  35 days slaughter
swine: 24 days slaughter

Dectomax® pour-on for cattle 0.5%

Doramectin ML cattle roundworms
lungworms
external parasites
5 ml/110 lbs.
topical
cattle:  45 days slaughter

Ivomec®
Eprinex pour-on

Eprinomectin ML cattle roundworms
lungworms
external parasites
5 ml/110 lbs.
topical
cattle:  0 days slaughter

Ivomec® pour-on for cattle

Ivermectin ML beef cattle roundworms
lungworms
external parasites
1 ml/22 lbs.
topical
cattle: 48 days slaughter

Ivomec Plus Injection

Clorsulon
Ivermectin
ML beef cattle roundworms
lungworms
external parasites
Adult liver flukes

1 ml/110 lbs.
SQ

cattle: 49 days slaughter

Ivomec®
injectable 1%

Ivermectin ML beef cattle
swine
roundworms
lungworms
external parasites
1 ml/110 lbs cattle.
1 ml/75 lbs. swine
Sub-Q

cattle:  35 days slaughter
swine: 18 days slaughter

Ivomec®
sheep drench 0.08%

Primectin™ Drench

Ivermectin ML sheep roundworms
lungworms
external parasites
3 ml/26 lbs.
by mouth
sheep: 11 days slaughter


Rumatel®
Medicated Premix

Morantel Tartrate NIC2 cattle
goats
mature roundworms 1/10 lb./100 lbs. cattle: 14 days
goats:  30 days

Prohibit Drench Powder

Levamisole Hydrochloride NIC cattle
sheep
roundworms
intestinal worms lungworms
Depends on dilution

cattle: 2 days
sheep: 3 days

Quest® 2% equine oral gel

Moxidectin ML horses
ponies
roundworms
lungworms
external parasites
0.4 mg/2.2 lbs. not for horses
intended for food

Safeguard®
Panacur®
liquid 10%

Fenbendazole BZD3 cattle
non-lactating goats
roundworms
lungworms
tapeworms
2.3 ml/100 lbs.
by mouth

cattle:  8 days slaughter
0 milk withdrawal
goats: 6 days slaughter

Safeguard®
Panacur®
paste

Fenbendazole BZD cattle
horses
roundworms
lungworms
tapeworms
2.3 mg/lb.
by mouth

cattle:  8 days slaughter

Strongid® paste
Banminth®-P Paste

Pytrantel Pamoate NIC horses
ponies
mature roundworms
2.27 mg/lb.
by mouth
not for horses
intended for food

Synanthic® drench 9.06%

Oxfendazole BZD

beef cattle
non-lactating dairy

roundworms
lungworms
tapeworms
2.5 ml/110 lbs.
by mouth
cattle:  7 days slaughter

Tramisol/Levasole®
drench

Levamisole NIC sheep
cattle
roundworms
intestinal worms lungworms
1 oz./100 lbs.
1 ml/50 lbs.
by mouth
sheep: 3 days slaughter

Tramisol/Levasole® injectable for cattle 13.65%

Levamisole NIC beef cattle roundworms
lungworms
2 ml/100 lbs.
Sub-Q
cattle: 7 days

Tramisol/Levasole®
boluses/oblets

Levamisole NIC sheep roundworms
lungworms
1 bolus/50 lbs.
by mouth
sheep:  3 days slaughter

Valbazan®
drench 11.36%

Albendazole BZD cattle
sheep
roundworms
lungworms
tapeworms
adult liver fluke
3 ml/ 100 lbs.
oral
restricted use during pregnancy
sheep: 7 days slaughter

Zimecterin® Gold Paste

Praziquantel
Ivermectin

ML horses
ponies
roundworms
lungworms
tapeworms
external parasites
1 tube/1250 lbs.
oral
not for horses
intended for food

Zimecterin-EZ® paste

Ivermectin

ML horses
ponies
roundworms
lungworms
external parasites
1 tube/1250 lbs.
oral
not for horses
intended for food


Chemical families: 1ML - macrolytic lactone; 2NIC - Nicotinic agonists; 3BZD - benzimidizoles.   To learn more read: Understanding anthelmintics.


Source:  Animal Drugs @ FDA

Last revised: 02-Jan-2009 by Susan Schoenian.

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