POM-V Prescription Required

Alamycin LA 300 Solution for Injection 300 mg/ml

Active ingredient: Oxytetracycline

Form

Injection

Species

Cattle Pigs Sheep

Manufacturer

Norbrook Laboratories Limited

VMD MA No.

02000/4113

What it's used for

For the treatment of conditions caused by or associated with organisms sensitive to oxytetracycline including: Bordetella bronchiseptica Actinomyces pyogen...

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 Oxytetracycline

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

Alamycin LA 300 Solution for Injection 300 mg/ml — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

For the treatment of conditions caused by or associated with organisms sensitive
to oxytetracycline including:
Bordetella bronchiseptica
Actinomyces pyogenes
Erysipelothrix rhusiopathiae
Pasteurella spp
Staphylococcus spp
Streptococcus spp
Certain mycoplasma, rickettsiae, protozoa and chlamydia are also sensitive to
oxytetracycline.
The product is indicated for the treatment and control of pasteurellosis,
pneumonia, atrophic rhinitis, erysipelas, joint-ill, navel-ill, summer mastitis in cows,
ovine keratoconjunctivitis (pink-eye) and enzootic abortion in sheep.

Revised: March 2025
AN: 03867/2024

To ensure a correct dosage, bodyweight should be determined as accurately
as possible, to avoid underdosing.
Deep intramuscular injection.
Alamycin LA 300 can be administered at the standard dose of 20 mg/kg to obtain
3 to 4 days duration of activity or at a high dose of 30 mg/kg for prolonged duration
of activity (i.e. activity maintained for 5 to 6 days).
Cattle, Sheep and Pigs: Standard dose - 20 mg/kg (1ml/15kg)
High dose - 30 mg/kg (1ml/10kg)
Maximum recommended dosage at one site:
Cattle 15 ml
Pigs 10 ml
Sheep 5 ml
Piglets 1 day: 0.2ml
7 days: 0.3 ml
14 days: 0.4 ml
21 days: 0.5 ml
Over 21 days: 1ml/10 kg
This product does not contain an antimicrobial preservative. Swab the septum
before removing each dose. Use a sterile needle and syringe.

Do not dilute the product.

Although the product is well tolerated, occasionally a slight local reaction of a
transient nature may be observed. Collapse has been reported with tetracyclines
in weak or debilitated animals.
Other adverse reactions to oxytetracycline that have been observed include
gastrointestinal disorders and, less frequently, allergic and photosensitivity
reactions.
In very rare cases, hypersensitivity, allergic or anaphylactic type reactions may
occur and in extreme cases these may be fatal. If such reactions occur,
appropriate treatment is recommended
The frequency of adverse reactions is defined using the following convention:
- very common (more than 1 in 10 animals treated displaying adverse reaction(s))
- common (more than 1 but less than 10 animals in 100 animals treated)
- uncommon (more than 1 but less than 10 animals in 1,000 animals treated)
- rare (more than 1 but less than 10 animals in 10,000 animals treated)
- very rare (less than 1 animal in 10,000 animals treated, including isolated
reports).

Revised: March 2025
AN: 03867/2024

Oxytetracycline therapy does not completely eliminate chlamydial infection in the
flock.

Special precautions for use in animals
If concurrent treatment is administered, use a separate injection site. Resistance
against oxytetracycline may vary.
Use of the product should be based on susceptibility testing of bacteria isolated
from the animal. If this is not possible, therapy should be based on local (regional,
farm level) epidemiological information about susceptibility of the target bacteria.
Inappropriate use of the product may increase the prevalence of bacteria resistant
to oxytetracycline and may decrease the effectiveness of treatment with
tetracyclines due to the potential for cross resistance.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
This product may cause hypersensitivity reactions (allergy). Persons with a known
hypersensitivity to tetracyclines should not handle this product. Wash hands after
use. In case of contact with eyes or skin, wash off immediately with water as
irritation may occur. Avoid accidental self-injection.

interaction
Oxytetracycline may interfere with the action of bactericidal antimicrobials, such as
penicillins and cephalosporins, and therefore they should not be used
simultaneously.
Concomitant vaccination is not recommended because of possible immuno-
suppressive activity of tetracyclines.

Do not store above 25ºC. Protect from light.
Following withdrawal of the first dose, use the product within 28 days. Discard
unused material safely
This product does not contain any microbial preservative.

Withdrawal period
20 mg/kg dose:
Cattle – Meat & offal 28 days Pigs – Meat & offal 14 days
Sheep – Meat & offal

28 days
30 mg/kg dose:
Cattle – Meat & offal 35 days
Pigs – Meat & offal 28 days
Sheep – Meat & offal

28 days
Cattle – Milk 8 days
Sheep – Milk 8 days.
5.

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.