Virbac Heat Shot

Most trusted heat shot available. Developed by a well known brand in the dog community.  Wonder what the haters have to say now?

 

Oestradiol Benzoate Heat Shot

 

PRODUCT DESCRIPTION

 

PregHeat (Oestradiol Benzoate Injection IP – 1mg/mL) is a veterinarian-grade estrogen hormone injection used by breeders to regulate, trigger, and synchronize heat cycles in female dogs. It’s one of the most reliable tools used in international breeding programs to correct irregular cycles and bring females into heat on schedule.

 

This injection contains pharmaceutical-grade Oestradiol Benzoate IP, Benzyl Alcohol preservative, and Arachis oil as the carrier base. It is strictly for intramuscular use.

 

Dogssuppliesrus clients rely on this product to keep breeding programs consistent, predictable, and profitable.

 

USES (DOG BREEDER FOCUSED)

 

1. Bring Females Into Heat (“Heat Shot”)

 

Used when a female has:

• Irregular heat

• Missed or skipped heat

• Very long anestrus

• Pre-breeding cycle delays

Triggers estrogen response → swelling → behavioral heat → ovulation.

 

2. Regulate Irregular Cycles

 

Corrects females with:

• Silent heat

• Split heat

• Weak heat signs

• Inconsistent progesterone levels

 

Helps get females back on a normal 6–8 month cycle.

 

3. Maximize Breeding Timing & Program Control

 

Breeders use it when they want to:

• Time heat for stud scheduling

• Line up multiple females

• Produce planned litters during peak seasons

• Get inexperienced females cycling again

 

4. Assist After Hormonal Imbalance

 

Useful when a dog has:

• Long recovery after puppies

• Weight loss or stress-induced cycle issues

• Failure to come into heat after hormone suppression

• C-section recovery delays

 

 

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DOG DOSAGE CHART (BASED ON 1mg/mL PREGHEAT)

 

Dosage ranges shown are based on 0.01mg/kg (low dose) to 0.1mg/kg (high dose). High dose is commonly used for heat induction.

 

Dog Weight Low Dose (0.01 mg/kg) High Dose (0.1 mg/kg)

 

5 lbs 0.02 mg (0.02 ml) 0.23 mg (0.23 ml)

10 lbs 0.05 mg (0.05 ml) 0.45 mg (0.45 ml)

20 lbs 0.09 mg (0.09 ml) 0.91 mg (0.91 ml)

40 lbs 0.18 mg (0.18 ml) 1.82 mg (1.82 ml)

80 lbs 0.36 mg (0.36 ml) 3.64 mg (3.64 ml)

125 lbs 0.57 mg (0.57 ml) 5.68 mg (5.68 ml)

200 lbs 0.91 mg (0.91 ml) 9.1 mg (9.1 ml)

 

 

Administration:

• Intramuscular injection only

• Single-dose or 2-dose protocol depending on cycle state

• Can repeat after 48 hours if needed

 

 

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WHEN BREEDERS NEED THIS PRODUCT

 

A. Female Has Not Come Into Heat

 

• More than 8–10 months since last cycle

• Stress, hormone imbalance, or postpartum delay

 

B. Female Stopped Cycling After a Litter

 

• Hormones slow down

• Female never bounced back

• Silent heats detected only by males

 

C. Silent or Weak Heat Signs

 

• Swelling but no bleeding

• Bleeding but no flagging

• Progesterone stays low too long

 

D. Heavy-Breeding Programs

 

Breeders with multiple females use this to:

• Sync females

• Plan litters for holidays or tax season

• Control stud schedules

• Manage kennel timing

 

E. Investment Litters / High-Value Females

 

Very expensive females can’t skip cycles.

PregHeat keeps them predictable.

 

 

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FULL PRODUCT FEATURES

 

• 1 mg/mL Oestradiol Benzoate

• 2 mL vial

• IM-only

• Regulates estrus cycle

• Helps stimulate estrogens for vaginal changes, cervical mucus, swelling, and behavior

• Includes sterile syringe & needle (in some boxes)

• Not for human use