A common medication used in cat veterinary care is called fospreneel. Knowing how Fospreneel works and when to use it will help you keep your cat healthy, whether you’re taking care of a kitten or an adult cat.
By stimulating the immune system, injection-based Fospreneel helps cats recover from illnesses more quickly. In order to encourage faster healing, it’s frequently advised for cats who exhibit signs of weakness, stress, or following surgery.
It’s critical for cat owners to understand the correct way to administer this treatment and to be aware of any possible adverse effects. Let’s investigate the functions, advantages, and potential uses of Fospreneel for your feline companion.
- Indications for use
- Release form and composition
- Dosage
- How it works
- Instructions for use of Fosprenil
- How to inject medicine to a cat
- Contraindications
- Side effects and overdose
- Average price for Fosprenil
- Storage conditions
- Analogues
- Video on the topic
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Indications for use
For cats and other pets, fospreneel is used for both therapeutic and preventive purposes. It is a part of many diseases’ complex step therapy regimens. Phosprenyl is prescribed by veterinarians for:
- prevention of mild and severe viral diseases;
- increase the body"s resistance to adverse factors;
- enhancement of the immune response when the vaccine is administered;
- prevention of complications after vaccination.
The medication’s biological action supports its use in treating a variety of conditions, including food poisoning, herpes, hepatitis, rhinotracheitis, peritonitis, coronavirus, and panleukopenia.
It is not necessary to revaccinate cats with phosphorenil.

Cats’ health can be supported by fospreneel, a natural immune-strengthening medication, particularly when they are afflicted with infections or compromised immune systems. Without having any negative side effects, it can aid in accelerating healing and enhancing general wellbeing. It’s a safe option for many cats when given through injections, but it’s best to speak with a veterinarian to make sure it’s the best option for your pet’s particular needs.
Release form and composition
ZAO Micro-Plus, a Moscow-based company, produces phosphornil for cats and other pets. The medication is offered for injection. A clear, slightly opalescent liquid with no smell at all may have a slight yellow tint. Fill glass bottles with 10 or 50 milliliters of the sterile liquid. Containers are fastened with an aluminum retainer and sealed with a rubber lid.
Four milligrams of dry disodium salt polyprenol phosphate are present in each milliliter of the medication. This compound’s source is a plant. It comes from the needles of fir and pine trees. The solution’s formula includes water, glycerin, ethanol, and tween-80 as auxiliary ingredients.

Dosage
The age group and body weight of the animal determine the single and daily doses of fosprenil. The dosage for adult cats is determined using the standard formula of 0.2 milliliters per kilogram of body weight. The ratio for kittens is 0.3 ml/kg. For adult cats, the total daily amount in this instance is 0.6β0.8 ml/kg. The maximum amount given to kittens per day is 0.9β1.2 milliliters. The solution is applied to the body in two or three locations, or the medication is divided into multiple injections throughout the day, if the estimated daily volume of the drug is high.
Liquid Phosprenyl is administered intravenously at a lower dose: 0.1 ml/kg (one-time) and 0.3-0.4 ml/kg (daily) for cats, and 0.15 ml/kg and 0.45-0.6 ml/kg for babies, respectively. If the medication is recommended to boost immunity prior to immunization, then 0.05 ml/kg is the recommended dosage per dose.
The normal dosage of fosprenil is doubled in extremely severe cases where the cat’s body is unable to handle the illness and life is in danger.
Fosprenil injections or oral medication are administered until all disease symptoms are gone, and therapy is finished two to three days later to solidify the effects. This antiviral medication typically requires at least 5-7 days of treatment. A veterinarian will prescribe the exact length of treatment based on the cat’s condition and the severity of the disease.

How it works
There are many beneficial characteristics of an antiviral medication that contains polyprenol phosphates. They ascertain the medication’s therapeutic effect. The following processes make up Fosprenil’s immunomodulatory effect in the body:
- Enhancement of the phagocytic function of leukocytes.
- Increased bactericidal activity of serum proteins.
- Stimulation of the synthesis of own antibodies.
- Activation of metabolic processes inside cells.
- Decreased activity of viral particles.
- Restoration of cellular structures.
- Increased antioxidant protection.
The cat’s body reacts to viral entry into cells more appropriately and combats infection more vigorously as a result of intricate biochemical alterations. Recovery happens more quickly and steadily. Even when the amount of food is not increased, the animal more actively gains weight when given fosprenil.

Certain viruses can be directly impacted by fosprenil. In particular, paramyxovirus, orthomyxovirus, togavirus, herpesvirus, coronavirus and some other non-cellular forms are susceptible to it.
The medication travels throughout the body after the injection by getting into the blood vessels. After 30 minutes, the drug’s highest concentration of active ingredients reaches the blood. Up to ten to sixteen hours are spent maintaining the therapeutic maximum. The medication has time to start working during this period. Active substances are seen to accumulate in the spleen, liver, and genitalia. Half-life products are eliminated through the intestines with feces and the kidneys with urine.
Instructions for use of Fosprenil
Sterile solution is meant to be taken orally or by injection. There are three methods for administering the injection: subcutaneous, intramuscular, and intravenously. The likelihood of a successful outcome and the cat’s recovery increases with the early initiation of treatment. Veterinarians advise beginning Fosprenil administration during the prodromal phase, which is the time between the disease’s incubation period and its initial onset of symptoms.

Following the injection schedule is advised when using this medication for treatment. The following dose should be given as soon as possible if one is missed. The drug’s amount in this instance is not excessive. A pet with a viral infection can also have their eyes and nasal cavity cleaned with this solution.
Steroid medications are not taken with fosprenil in order to maintain the therapeutic effect.
How to inject medicine to a cat
Fosprenil is injected intramuscularly into the large skeletal muscles. The upper thigh is where it is first found. Starting from the tail side, the needle is inserted. The upper third of the shoulder holds the second position. The abdomen’s back is where the needle is inserted. For subcutaneous injection, the withers or the space between the shoulder blades is appropriate. Using your fingers, lift the skin, then slide the needle under the fold.

The drug must be administered intravenously, which takes expertise. It is advised that you get in touch with a clinic rather than experimenting at home if you do not have it. Intravenous injection requires the following series of sequential manipulations:
- The paw is tied with a tourniquet.
- A needle is inserted into the swollen vein without a syringe.
- Attach a syringe with the medicine to the needle.
- Allow blood to enter the syringe cavity.
- Remove the applied tourniquet.
- Slowly inject the medicine into the vein.
Diluting the injection Fosprenil with saline solutions is not advised.

Contraindications
Individual sensitivity to chemicals is the primary barrier to using fosprenil. All breeds and ages of cats are treated with the medication. Standard dosages of polyprenols are safe to give the body during lactation and pregnancy. However, a veterinarian should be specifically in charge of these cats. When administering fosprenil to kittens, the same level of caution is required.
Side effects and overdose
Cats can take fosprenil, a low-toxic medication that doesn’t seriously alter their bodies. GOST 12.1.007-76 states that polyprenol phosphates are in hazard class 4. Regarding this medication, no mutagenic, carcinogenic, teratogenic, or emriotoxic effects have been discovered. Both the drug and the injection site are not allergenic, nor do they produce localized skin irritation.
When Fosprenil dosages were exceeded in clinical trials, no adverse effects were reported. In certain instances, cats may have an allergic reaction while undergoing treatment. Give the cat an antihistamine, halt the injections, and get in touch with a veterinarian as soon as any questionable changes in their health occur. These symptoms include fever, palpitations, drowsiness, and an elevated heart rate.
Average price for Fosprenil
The volume of the bottles, how many there are in the packaging, and the pharmacy’s price schedule all affect how much a complete package costs. A 10 ml bottle of Fosprenil typically costs between 200 and 270 rubles. A complete set of five bottles costs between 1150 and 1400 rubles.
Storage conditions
The antiviral medication should be stored away from food and household chemicals, out of the reach of small children, as per the usage instructions. Make sure the bottles are tightly closed. The ideal storage temperature is between +4 and +25 degrees.

Analogues
There are a number of antiviral and immunomodulatory medications for cats that have a similar effect to fosprenil. They might have different active ingredients. However, the analogues’ primary mechanism of action and recommended use are identical. These goods consist of:
Gamavit. Animal placentas are a source of adaptogen. Minerals, vitamins, and amino acids are found in biologically active complexes. It is created as an injection-orally-useable sterile solution.
Maxidin. The formula is based on organic compounds containing germanium. The immunomodulator is made as eye drops and an injection solution.
Forvet. Mono- and polysaccharides derived from plant sources make up the active complex. Eye drops and injection solution are the two dosage forms available.

| Question | Answer |
| What is Fospreneel? | Fospreneel is an immune-boosting injection for cats to help improve their overall health and resistance to infections. |
| When is it used? | It"s typically used when a cat is recovering from illness or surgery, or when they have a weakened immune system. |
| How is it given? | Fospreneel is administered by injection, usually by a vet or as prescribed. |
| Are there side effects? | Most cats tolerate Fospreneel well, but in rare cases, there may be mild reactions at the injection site. |
Enhancing the immune system and general well-being of your cat can be achieved with the aid of fospreneel. Even though this supplement has advantages, it’s crucial to keep in mind that it should always be taken under a veterinarian’s supervision.
Remember that every cat is unique, so what suits one may not suit another. To make sure your pet is responding well to treatment, keep a close eye on them and take them in for routine checkups.
By following the correct procedures, you can guarantee your cat’s continued health and comfort and provide them with the best care possible when Fospreneel is required.









