FREE Delivery over €129
Bovikalc Calcium Bolus 2 lbs - 4 ct (4 Boluses)
Bovikalc Calcium Bolus 2 lbs - 4 ct (4 Boluses)
Bovikalc Calcium Bolus 2 lbs - 4 ct (4 Boluses)

Bovikalc Calcium Bolus 2 lbs - 4 ct (4 Boluses)

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Bovikalc Calcium Bolus is an essential source of calcium used for controlling of milk fever in cattle. Cows that have a previous history of milk fever or that are pregnant with twins are susceptible to milk fever, Bovikalc Calcium Bolus can help prevent milk fever in the first place with a bolus given just before or straight after calving and a second bolus given 12 hours later. Bovikalc Calcium Boluses are specially designed with a fat coating which makes it easy and safe to administer and does no damage to the cows throat. Bovikalc Calcium Bolus are also very quickly absorbed into the cow's bloodstream. 
Active Substance


Target Species

Treats and Controls
Replenishes lost calcium in the cow's system

Application Method
Administer Bovikalc with the 
Bovikalc Application Gun.

Withdrawal Period

Just before or straight after calving and a second bolus given 12 hours later.

What is milk fever?

Milk fever is most commonly found in dairy cows and is a metabolic disease that is caused by low calcium blood levels. Milk fever can lead to a shortened life span and reduced milk production with one in twenty cows suffering from milk fever dying.


Signs of a case of clinical milk fever can develop rapidly within 2-4 hours and if left unaided, the cow could potentially die within 10-24 hours. 


Subclinical milk fever occurs when calcium levels appear below 'normal' and may not show extreme indicators of milk fever. Typically, a cow with subclinical milk fever will see a drop in milk yield, poor weight gain and poor conception rates. Subclinical milk fever can often develop into clinical milk fever. 


Why Does Milk Fever Occur?


The onset of lactation causes a sudden and large demand of calcium requiring an extra 

80g per day from the cow. The cow can adapt to this demand by:

  • Drawing on her own reserves from bone and tissue

  • By improving absorption from the diet 

  • By reducing losses in urine 

There is a balance between lactational calcium demands and the ability of a cow to mobilise her own calcium reserves to meet this demand. The cows ability to maintain this balance and meet demands will influence on whether or not milk fever will develop. 


What Cows are at Risk of Milk Fever?
All cows are unfortunately at risk of Milk Fever and most cows will have some degree of hypocalcaemia. However, risk will increase with age and parity. Some indicators to determine if your herd or individual cows are at a greater risk and should receive Bovikalc as a preventative measure includes:

  • Increasing lactations

  • High yielding cows

  • Previous history of Milk Fever

  • Body condition score >3.5

  • Grass based diet or diets high in potassium


Signs: Typical signs of milk fever begin with tremors in the muscles of the head and limbs which then leads to the cow staggering and then eventually going down into a sitting position. Finally if left unaided the cow will collapse into a coma and may potentially die.


Other symptoms can include:

  • Dry muzzle

  • Staring eyes

  • Cold legs and ears

  • Constipation

  • Drowsiness

Causes: Over 80% of cases of milk fever happen within 24 hours of calving. This is because the production of milk and colostrum drain calcium from the blood of the cow. Some cows are unable to replace the calcium quick enough which is the main cause of milk fever.


Key Benefits of using Bovikalc Calcium Bolus

  • Replenishes lost calcium in the cow's system

  • Easy to administer

  • Designed to do no damage to calves throat

  • Fast acting

  • Reduces the risk of calcium chloride aspiration pneumonia.

Give one Bovikalc Calcium Bolus prior to or immediately after calving and a second bolus twelve hours later. The Bovikalc Calcium Bolus will disintegrate quickly in the rumen. The calcium chloride is available immediately while the calcium sulphate will provide sustained release of calcium.


Bovikalc calcium boluses

Cattle Boluses
These types of wormers are administered orally using product-specific equipment.
Closely follow the manufacturer’s instructions to ensure that the boluses are delivered over the back of the tongue, so they can be swallowed.
Avoid any excess force, as this can cause damage to the throat and do not depress the plunger until you are satisfied with the positioning of the bolus.
It is important that the animal stays as calm as possible and can swallow.
It is very difficult to successfully and safely complete administration if the neck is twisted and the animal is fighting you.


Delivery Information

Delivery Service

Here at Agridirect we have joined forces with DPD to ensure all packages are delivered promptly and safely to you. We ship to all mainland countries within the EU. Deliveries take place Monday to Friday excluding bank holidays. Once your order has been dispatched from our warehouse you will be notified by email. If there is a delay with your order for any reason you will be contacted immediately. 

Due to Brexit we are temporarily unable to ship to the UK. Shipping to Northern Ireland will remain in place.

Delivery Times
Ireland (ROI & NI) EU (Mainland Only)
2-4 Working Days 4-6 Working Days

Some products have an extended delivery time, this is noted on the products.

Delivery Rates

Country Orders Under €129 Orders Over €129
Ireland (ROI & NI) €7.99 €0.00
Austria €24.99 €17.00
Belgium €21.99 €14.00
Czech Republic €24.99 €17.00
Denmark €24.99 €17.00
Finland €36.99 €29.00
France €21.99 €14.00
Germany €21.99 €14.00
Hungary €28.99 €21.00
Italy €34.99 €23.00
Luxenburg €21.99 €14.00
Netherlands €21.99 €14.00
Poland €21.99 €17.00
Portugal €36.99 €29.00
Slovakia €28.99 €21.00
Slovenia €28.99 €21.00
Spain €34.99 €27.00
Sweden €34.99 €27.00


A selection of the products we sell are only licensed for sale within the Republic Of Ireland and can not be shipped outside of the country. These products are noted as only being available within the Republic of Ireland on the individual product pages.

There may be an addition charge on certain bulky items. This charge will be clearly marked on an applicable products and will be explained on the checkout page before payment has been made.

Agridirect Returns Policy

We’re sorry your purchase didn’t work out. But don’t worry; we have a great returns policy to help you out.

All purchases can be returned to us within 14 days of delivery and returned goods must be received within 14 days from the date you informed us of the return.

Purchases may be opened for inspection but must not be used and must be repackaged securely in the original packaging if you wish to return it.

If we discover goods have been used or there has been a loss in value of the goods due to damage to the goods, while in your care or whilst being returned to us, we will reduce the amount refunded, which may amount to the full cost of the product, to cover loss of value of goods.

All returns should be complete which includes boxes, manuals and accessories that may have been included with the order.

All returns must be packaged appropriately for shipping, we will not accept responsibility for damages or loss which occur during shipping of a return product.

We accept no responsibility for goods damaged or lost while in transit to us. 

How do I return a product?

We have partnered with DPD to make your returns process easy and secure. simply follow the steps below and bring your package to an official DPD pickup point.

1) All returns must be accompanied with a fully filled out returns form which can be downloaded here.

2) To print off your return label click here or visit and follow the on-screen instructions. Make sure and use your order number as your reference.

  • Select “Continue as Guest”
  • Select “Agridirect” from the drop-down menu
  • Select your reason for returning
  • Select the size of the package you wish to return
  • Accept DPD’s terms and conditions
  • Fill in your payment details
  • Fill in your own details
  • Follow the instructions to print off your label

3) Bring your package to a DPD pickup point. To find your nearest drop off point here.

Once the returned product has been received into our warehouse and been fully inspected a refund will be issued.

If you choose not to use the DPD returns service we recommend that you use a method that can be tracked.

For the return of bulk products please contact us at

I have received a damaged product from you, what should I do?

First off, if you have received a damaged electrical product from us, do not plug it in. Any electrical products that are plugged in are deemed ‘as used and accepted’ and are not accepted as returns. All damages must be reported to us via phone or email within 24hours of receipt of goods. Please ensure you check your items upon delivery.

How do I begin the returns process?

If you wish to begin the return process, please email us at and ensure the following information is included in your email. Your name, phone number, Order id, the item you wish to return, reason for return and if the product is damaged we require photos of the product.

Once you have sent us all required information a member of our team will assess your claim and will contact you as soon as possible. Please hold off on returning products until a member of our team has called you to confirm.


Once the returned product has been returned to us and fully inspected a refund will be issued.

Please Note: A typical timeline for a refund to show in your account is up to 10 working days from the date processed, depending on your bank.



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