POM-VPS Prescription Required

Megacal-M Solution for Injection

Active ingredients: Calcium, Magnesium

Form

Injection

Species

Cattle

Manufacturer

Ballinskelligs Veterinary Products

VMD MA No.

12828/4000

What it's used for

For treatment of hypocalcaemia and as an aid in raising blood magnesium levels where a deficiency may be expected.

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 Calcium + Magnesium

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

Megacal-M Solution for Injection — SPC Details

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

For treatment of hypocalcaemia and as an aid in raising blood
magnesium levels where a deficiency may be expected.

None known

The product should be administered with care particularly where
concurrent toxaemia exists. In recumbent cows with poor peripheral
circulation, administer appropriate calcium therapy intravenously.

Revised: January 2015
(Minor Typographical errors)
AN: 01339/2007

Warm the product to body temperature before administration.
When the intravenous route is being used, extreme caution must be
taken to ensure slow administration.
This product does not contain an antimicrobial preservative. Any
solution remaining in the vial after withdrawal of the required dose
should be discarded.
Special precautions to be taken by the person administering the
product to animals
Care should be taken to avoid accidental self-injection. If accidental
self-injection occurs, seek medical advice.
Eye Contact: immediately flush the eye with copious amounts of clean
running water.
Skin contact: Wash the affected area thoroughly. If irritation occurs
seek medical advice.
Ingestion
show product label and / or pack insert to the doctor.
ADVICE TO DOCTOR: For treatment advice contact the National
Poisons Information Service (NPIS) or your local Poisons Information
Centre.

interaction
None known.

Store below 25
°
C. Protect from light.

Meat – Zero days
Milk – Zero hours
5.
This product is intended to restore blood calcium levels in cases of
hypocalcaemia.

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.