POM-V Prescription Required

Pharmasin 20000 IU/g Oral Granules for Pigs

Active ingredient: Tylosin

Form

Powder

Species

Pigs

Manufacturer

Huvepharma N.V.

VMD MA No.

30282/3012

What it's used for

Cattle (adult): Respiratory infections, metritis caused by Gram-positive microorganisms, mastitis caused by i.e. panaritium or foot root. Calves: Respirato...

Full indications, dosage and side effects ↓

View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Tylosin

1

Ask your vet for a written prescription

They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
2

Fill it at a registered online retailer

The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Your prescription rights → VMD register of retailers →

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Pharmasin 20000 IU/g Oral Granules for Pigs — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

Cattle (adult):
Respiratory infections, metritis caused by Gram-positive microorganisms, mastitis
caused by
i.e. panaritium or foot root.
Calves:
Respiratory infections and necrobacillosis.
Pigs (more than 25 kg):
-Enzootic pneumonia, haemorrhagic enteritis, erysipelas and metritis.
-Arthritis caused by
For information regarding swine dysentery see section 3.5.

For use in individual pigs on farms where only a small number of pigs are to
receive the medicine. Larger groups should be treated with medicated feeding
stuff containing the premix.
Individual pigs should receive 5000 IU tylosin per kg bodyweight, corresponding
to 250 mg veterinary medicinal product/kg bodyweight, once a day for 3 weeks.
This is achieved by thoroughly mixing the product into the daily ration for each
individual pig. The required amount of veterinary medicinal product should be
added to the estimated quantity of daily ration for each pig in a bucket or similar
receptacle and thoroughly mixed. The veterinary medicinal product should only
be added to dry non-pelleted feed.
To ensure a correct dosage, body weight should be determined as accurately
as possible. Should there be no clear response to treatment within 3 days the
treatment approach should be reconsidered.

Do not use in cases of hypersensitivity to the active substance, to other
macrolides or to any of the excipients.
Do not use where cross-resistance to other macrolides (MLS resistance) is
suspected.
Do not use in animals vaccinated with tylosin-sensitive vaccines either at the
same time or within 1 week previously.
Do not use in animals with hepatic disorders.
Do not use in horses – danger of inflammation of the cecum.

Pigs:
Undetermined frequency
(cannot be estimated from
available data)
-
-
-
Reporting adverse events is important. It allows continuous safety monitoring of
a veterinary medicinal product. Reports should be sent, preferably via a
veterinarian, to either the marketing authorisation holder or its local
representative or the national competent authority via the national reporting
system. See the package leaflet for respective contact details.

None.

Special precautions for safe use in the target species:
This veterinary product is only for administration in small quantities of feed for
immediate consumption, to individual animals. Animals with acute infections
may have a reduced feed intake and should be treated with a suitable
injectable veterinary medicinal product first.
Due to likely variability (time, geographical) in susceptibility of bacteria for
tylosin, bacteriological sampling and susceptibility testing are recommended.
Inappropriate use of the veterinary medicinal product may increase the
prevalence of bacteria resistant to Tylosin and other macrolides.
Special precautions for the person administering the veterinary medicinal
product to animals:
Tylosin may induce irritation. Macrolides, such a tylosin, may also cause
hypersensitivity (allergy) following injection, inhalation, ingestion or contact
with skin or eye. Hypersensitivity to tylosin may lead to cross reactions to
other macrolides and vice versa. Allergic reactions to these substances may
occasionally be serious and therefore direct contact should be avoided.
To avoid exposure during mixing and handling of the veterinary medicinal
product wear safety glasses, impervious gloves, and wear either a disposable
half mask respirator conforming to European Standard EN149 or a non-
disposable respirator to European Standard EN140 with a filter to EN143.
Wash hands after use.
In the event of accidental skin contact, wash thoroughly with soap and water.
In case of accidental eye contact, flush the eyes with plenty of clean, running
water.
Do not handle the veterinary medicinal product if you are allergic to
ingredients in the veterinary medicinal product.
If you develop symptoms following exposure, such as skin rash, you should
seek medical advice and show the physician this warning. Swelling of the
face, lips and eyes or difficulty in breathing are more serious symptoms and
require urgent medical attention.
Special precautions for the protection of the environment
Not applicable.

Lincosamides and aminoglycoside antibiotics antagonize the activity of tylosin.

Store in a dry place below 30°C. Do not refrigerate or freeze. Protect from
frost. Store in the original container in order to protect from light.

Pigs
Meat and offal: 1 day.
4.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.