[Version 7

[Version 7

ANNEX I SUMMARY OF PRODUCT CHARACTERISTICS 1 1. NAME OF THE VETERINARY MEDICINAL PRODUCT VetZink, 1000 mg/g, premix for medicated feeding stuff, ...

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VetZink, 1000 mg/g, premix for medicated feeding stuff, for pigs.



Active substance: Zinc oxide 1000 mg/g.



Premix for medicated feeding stuff.




Target species

Weaned pigs up to 10 weeks of age. 4.2

Indications for use, specifying the target species

Prevention of diarrhoea in weaned pigs. 4.3


None. 4.4

Special warnings for each target species

None. 4.5

Special precautions for use

Special precautions for use in animals The product should be used as a temporary aid, in conjunction with the implementation of relevant measures to prevent post-weaning diarrhoea. Official, national treatment policies should be taken into account when the veterinary medicinal product is used Special precautions to be taken by the person administering the veterinary medicinal product to animals Airways/ingestion: • As with any powder, this product can cause irritation of the airways • Avoid inhalation • Avoid dust formation. Avoid dust formation when mixing the feed. Using a mask respirator is not necessary in case of sufficient ventilation or when using a self-contained system. In case of exposure to large quantities of dust, the dust mask P2 must be used • In case of accidental inhalation, provide fresh air and contact a doctor in case of discomfort. In case of accidental ingestion, rinse the mouth with water and drink plenty of water. Seek medical advice in case of discomfort.


Eyes: • • • •

As with any powder this product can cause irritation to the eyes Avoid contact with eyes Wear eye protection In case of accidental eye contact, rinse thoroughly with plenty of water. Then remove any/possible contact lenses and continue rinsing. Seek medical advice in case of discomfort.

Skin: • As with any powder, this product can cause irritation of the skin • Avoid contact with skin • Wear work clothes and protective gloves (of leather, rubber, or cotton). Wash hands after use. • In case of accidental skin contact, wash with soap and water. Other precautions regarding impact on the environment Zinc is very toxic to aquatic organisms, but can affect growth, survival and reproduction in both aquatic and terrestrial plants and animals. Zinc is persistent in soils and may accumulate in sediments. Toxicity will depend on environmental conditions and habitat types. The risk to the environment can be reduced by adhering to the following measures. When spreading manure from treated animals, the maximum total zinc load as defined in the national or local regulations has to be strictly respected. Undiluted manure from treated piglets should not be applied to land. Dilution with manure of untreated animals or sows is required so that the total amount of treated piglet manure is as low as possible and is never exceeding 40%, the ratio when manure of weaned piglets and sows is stored together. The product should not be used on farms where mixing of manure from treated animals with manure of non-treated animals is not possible. The bioavailability of zinc, and therefore the environmental risk, varies between soil types. Manure from treated piglets should not be spread on vulnerable soil types, which have been identified as freely draining, acidic (pH ≤6), sandy soils. Manure containing zinc should not be spread on the same area of land in successive years to avoid accumulation of zinc which may cause adverse effects in the environment. When spreading manure from treated animals, the minimum distance to surface water as defined in the national or local regulations has to be strictly respected, and at least a minimum buffer zone of 3 m applied, because the manure contains zinc which may cause adverse effects in the aquatic environment. 4.6

Adverse reactions (frequency and seriousness)

New studies have shown that in swine herds positive for MRSA (methicillin-resistant Staphylococci)), the use of zinc oxide for weaners may increase the prevalence of the resistant bacteria among the weaners. 4.7

Use during pregnancy, lactation or lay

Not applicable. 4.8

Interaction with other medicinal products and other forms of interaction

None known. 4.9

Amounts to be administered and administration route

For incorporation into dry feed at a mill approved by the [name of the local authority]. 3

2500 mg zinc per kg feed equivalent to 3000 mg zinc oxide per kg feed for up to a maximum of 14 days. The feed consumption during the two weeks after weaning is approximately 6-7 kg/pig. The amount of medicated feed prescribed should not exceed 10 kg/pig. For oral administration only. When the product is mixed into the feed, the amount of zinc already present in the feed, either as naturally occurring zinc or added for nutritional purposes, should be taken into consideration. Without prescription the maximum amount of zinc content in feed is 150 mg/kg. Taking the actual amount of zinc in the feed into consideration a quantity of the product should be added so that the total amount of zinc does not exceed 2500 mg zinc per kg feed (this equals 2.8-3 kg of the product mixed into 1000 kg of feed depending on the zink already presented in the feed). To ensure adequate distribution of the product in the final feed it is recommended to premix the product with a suitable quantity of feed ingredients before blending into the final feed. The final feed should be fed as the only feed for up to maximum 14 days. 4.10 Overdose (symptoms, emergency procedures, antidotes), if necessary Hepatic toxicity (lipid accumulation in hepatocytes) was demonstrated in weaned pigs provided with use of the recommended dose for 4 weeks. 4.11 Withdrawal period(s)


Piglets (slaughter): 0 days.



Pharmacotherapeutic group: Anti-diarrhoeals, intestinal anti-inflammatory/anti-infective agents ATCvet code: QA07XA91. 5.1

Pharmacodynamic properties

Zinc is an essential trace element which is crucial for growth processes. The mechanism of action of zinc oxide in the treatment and control of diarrhoea in pigs has not been established. It has been shown to have a favourable effect on the gut microflora by stabilizing intestinal microflora. Furthermore it is known that Zn2+ interferes with the binding of E. coli to the enterocytes. 5.2

Pharmacokinetic particulars

Absorption Zinc oxide is relatively poorly absorbed and at therapeutic levels blood levels only increased 2-fold. Distribution Therapeutic levels of zinc oxide increase zinc levels in the liver and kidneys in pigs approximately 35-fold and 2-fold, respectively. No increases in muscle levels were observed. Biotransformation Since therapeutic levels of zinc are poorly absorbed, it is believed that most is excreted unchanged in the faeces. Elimination The majority of zinc from zinc oxide is excreted without absorption. Levels of zinc in liver and kidneys return to normal within 7 days following withdrawal. 5.3 Environmental properties Zinc is very toxic to aquatic organisms and is persistent in soils and sediments. Zinc may accumulate in soil following continual application of manure from treated animals; with acidic sandy soils being most vulnerable. The bioavailability of zinc, and therefore the environmental risk, varies between soil types and environmental conditions (e.g. dissolved organic carbon, calcium and pH). Zinc oxide is mainly excreted in the faeces, only a small proportion is excreted in the urine. The substance is not biotransformed and enters the environment in the form of slurry and manure. The impact on the total environmental zinc burden has been assessed and is not expected to be unacceptable when the product is used as prescribed.




List of excipients

None. 6.2

Incompatibilities 5

None known. 6.3

Shelf life

Shelf-life of the veterinary medicinal product as packaged for sale: 2 years. Shelf life after incorporation into meal or pelleted feed: 3 months.



Special precautions for storage

• •

Store in a dry place. This veterinary medicinal product does not require any special temperature storage conditions.


Nature and composition of immediate packaging

Paper sack (three-ply paper sack. The outer ply is coated with PE). Pack sizes: 10 kg and 25 kg. Not all pack sizes may be marketed. 6.6

Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products

EXTREMELY DANGEROUS TO FISH AND AQUATIC LIFE. Do not contaminate surface waters or ditches with the product or used containers. Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal product should be disposed of in accordance with local requirements.



Vepidan Aps Østerbrogade 23 DK-9670 Løgstør Denmark



To be completed nationally.