SEX BARRIER Drops for female cats

SEX BARRIER Drops for female cats

SEX BARRIER Drops for female cats

SEX Barrier will pacify the love ardor of your four-legged friend. SEX Barrier is the only bi-hormonal contraceptive product for cats and dogs in the Russian market that takes into account the gender of animals. SEX Barrier is the leader on the Russian market.

Description and action

  • An effective decision of the problems associated with the sexual hunt of cats and dogs. The use of the drug will provide the best result to maintain a calming effect, suppress sexual arousal, prevent unwanted pregnancy.
  • The drug is safe to use. Thanks to its high efficiency and safety in application, SEX BARRIER has gained the trust of millions of cats and dogs owners.

The best way for sexual hunt control.

The use of SEX BARRIER is a more humane way of sexual hunt control than castration or spaying. The use of drug excludes surgical intervention, which allows animals to have offspring in the future. The reproductive function of the animal is fully restored 2 to 3 months after withdrawal of SEX BARRIER.

Complete safety during intended use

SEX BARRIER is a bi-hormonal drug (contains two hormones in its composition). Compared with monohormonal, the dosage of hormones in its composition is reduced tenfold. This allows you to delicately adjust the hormonal status of the animal, depending on its type and gender. This provides the necessary calming effect.


Mechanism of action

The main active ingredients in the drug are mepregenol acetate and ethinyl estradiol. Mepregenol acetate blocks the production of gonadotropin-releasing hormone in the mediobasal zones of the hypothalamus, thereby preventing the secretion of follicle-stimulating and luteinizing pituitary hormones. Thus, the development of follicles in the ovaries, ovulation, and the secretion of estrogens are inhibited in females. The contraceptive effect is caused by the complex effect of mepregenol acetate and ethinyl estradiol due to changes in the biological properties of the vaginal environment, an increase in the viscosity of the cervical mucus, and a change in the state of the endometrium, which prevents the implantation of a fertilized ovum. The combined effect of ethinyl estradiol and meprenol acetate in males and females causes a calming effect, correcting unwanted behavior during sexual arousal. The presence of two active substances that enhance each other’s effect allowed to minimize the concentration of hormones in the drug, which makes its use effective and safe at the same time.


1 ml of the drug contains:

  • Mepregenol acetate, water-soluble - 1 mg
  • Ethinyl estradiol - 0.01 mg

Recommendations on storage and expiration date

Store the drug with caution in the manufacturer's packaging, in a place protected from direct rays, inaccessible to children and animals, separately from Foods and Feeds at a temperature of 0° C to 25° C. Expiration date: 3 years from the date of production.


It is forbidden to apply to animals under sex maturity. The drug is contraindicated in urolithiasis, diabetes mellitus, neoplasms of various nature, pathological conditions of the genitourinary system of infectious and non-infectious origin, as well as individual hypersensitivity to the components of the drug. It is forbidden to use a drug that is not intended for this type and sex of the animal, due to the different concentration of active substances.

Dosage form

Oral solution.


Vial of 2 ml in blister.

Instructions SEX BARRIER Drops for female cats.pdf

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Purpose of the drug

Animal body weight


Course of use

НStart of intake


Sexual heat control

Estrus interruption

Up to 5 kg

4 drops once per day

3-5 days

At the first sign of estrus

1. The drug is ineffective if more than 2 days have passed since the onset of estrus.
2. In some cases, the use of the drug is extended until the termination of sexual heat.

Over 5 kg

5-7 drops once per day

Estrus delay, maintaining of the calming effect

Regardless of the body weight of the pet

4 drops once per day

1For 3 days once a month
For animals, whose duration of the rest period is less than 30 days – regularly 1 time in 14 days

During sexual dormancy, between estrus

The length of the resting period can vary individually depending on temperament, estrous cycle, breed, age.

Prevention of unwanted pregnancy

Regardless of the animal’s body weight

8 drops once per day


No later than 24 hours after mating

A later administration of the drug significantly reduces the effect of treatment.

Veterinary doctor's

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