Company: MANNA PRO

DELIVERY FORM: medicated pellets, «feed additives and medicated feeds» for oral administration.

ACTIVE INGREDIENT(S): morantel tartrate 880 g/ton (=0.88 g/kg) (equivalent to 0.088%) plus several minerals and vitamins without any anthelmintic efficacy.

CHEMICAL CLASS of the active ingredient(s): tetrahydropyrimidines


PARASITES CONTROLLED (spectrum of activity)


* Country-specific differences may apply: read the product label.

  • For use in goats as a single therapeutic treatment.
  • Feed at the rate of 1 lb per 100 lbs of body weight as a single feeding (equivalent to 8.8 mg/kg body weight).
  • The feed should be consumed within 6-8 hours. May be fed as the sole ration or mixed with 1 or 2 parts of complete feed or as top dress.
  • When used as a top dress the medication as well as the underlying feed should be evenly distributed.

Read the product label for more specific details on dosage.


  • LD50 (acute oral) in rats: 551-986 mg/kg for the a.i. morantel tartrate
  • LD50 (acute dermal) in rats: n.a.

Suspected poisoning? Read the article on morantel safety in this site.

Withholding periods (=withdrawal times) in days for meat & milk (country-specific differences may apply: read the product label)

  • Meat:
    • Goats: 30 days
  • Milk for human consumption:
    • Goats: NIL

WARNING !!!: Never use on humans, dogs or cats.

You may be interested in the following articles in this site dealing with the general safety of veterinary products:


Risk of resistance? YES, resistance to tetrahydropyrimidines has been reported for Haemonchus sppOstertagia spp and Trichostrongylus spp worms in sheep and goats, for Haemonchus spp in cattle, probably with cross-resistance to levamisole. However, resistance of gastrointestinal roundworms to tetrahydropyrimidines is usually less frequent than resistance to benzimidazoles, levamisole or macrocyclic lactones.

This means that if this product does not achieve the expected efficacy against the mentioned parasites, it can be due to resistance and not to incorrect use, which is usually the most frequent cause of product failure.

Alternative chemical classes/active ingredients to prevent resistance of external parasites through product rotation:

These alternative products may not be available in all countries, or may not be effective against all the concerned parasites.

It is highly recommended to periodically check the resistance status of each property performing appropriate tests (e.g. fecal egg counts) under supervision of a veterinary doctor. Such tests are now routinely available for most producers in developed countries.

Learn more about resistance and how it develops.


Are the active ingredients of this product ORIGINAL* or GENERICS**?


*Meaning that they are still patent protected and generics are not yet available
**Meaning that they have lost patent protection and may be acquired from manufacturers of generic active ingredients other than the holder of the original patent.

COUNTRIES where this brand/product is marketed: USA.
GENERIC BRANDS available? Yes, but very few in most countries. This product itself contains generic morantel tartrate.

Click here to learn more about GENERIC vs. ORIGINAL drugs.

Click here for an overview on the most used antiparasitic feed additives and medicated feeds for livestock and horses.


POSITIVE PELLETS GOAT DEWORMER is a brand from MANNA PRO for a medicated wormer containing morantel tartrate.

Morantel (in this case the tartrate salt) is a veteran anthelmintic introduced in the 1970s (by PFIZER → ZOETIS). It is a narrow-spectrum anthelmintic effective against roundworms in the gut, but not against those in other organs (skin, lungs, etc). Nowadays it is rather scarcely used in horses, ruminants or pets because more effective compounds with a broader spectrum are usually preferred. It is not used in agriculture.

Morantel has no residual effect, i.e. it kills the parasites after administration but as soon as medicated feeding is interrupted it does not significantly protect the animals against re-infestation by infective stages in their environment.

Click here for general information on good practices for the prevention and control of gastrointestinal worms in livestock.


This article IS NOT A PRODUCT LABEL. It offers complementary information that may be useful to veterinary professionals and users that are not familiar with veterinary antiparasitics. 

Information offered in this article has been extracted from publications issued by manufacturers, government agencies (e.g. EMEA, FDA, USDA, etc.) or in the scientific literature. No guarantee is given on its accuracy, integrity, sufficiency, actuality and opportunity, and any liability is denied. Read the site's DISCLAIMER.

In case of doubt contact the manufacturer or a veterinary professional.