Insulin for Cats

Insulin is an injectable medication that you give to your diabetic cat to regulate blood sugar. It is important to maintain blood sugar levels within a reasonable range throughout the day, usually with a once- or twice-a-day dosing schedule (usually twice). The goal is to control excessive urination, appetite and other symptoms that your cat may experience. It will take some experimentation to find the right dose. The research will determine the starting point for the dose. After a few weeks, your cat will return to a glucose curve where blood sugar levels are mapped over a 10- to 24-hour period. This will indicate if insulin is effective and how long it lasts. It can also show whether the dose should change or be increased. You can also learn how to monitor your cat’s blood glucose levels by yourself, but you might want to practice giving injections first before you start taking blood samples.

Insulin is a common medication

Four insulins are currently in common use for ccats

  1. Vetsulin

Vetsulin (also known as Caninsulin(r), in some countries)

Vetsulin(r), a injectable insulin suspension, reduces hyperglycemia in cats with diabetes mellitus.

Vetsulin is a cat insulin that was specifically designed for cats. It has been approved by the FDA and works quickly.

  1. Controls glucose levels
  2. Diabetes symptoms are less apparent
  3. FDA-approved for cats
  4. U-40 insulin syringe, or VetPen(r).
  5. It has been used for more than 25 years in all parts of the world

Vetsulin, unlike other insulin products is mixed properly.

*Vetsulin can be sold outside the United States as Caninsulin(r).

  1. PZI insulin

PZI insulin (currently sold as Prozinc(r), insulin).

Long-acting insulin, called protamine zinc insulin (PZI), is used to treat diabetes. This is a common condition in dogs and cats of middle age. Insulin is a hormone that the pancreas produces. It helps regulate blood sugar levels. High blood sugar levels in diabetic patients (hyperglycermia) can be caused by high blood sugar. Insulin injections are required for diabetic patients who don’t produce enough insulin. Insulin injections are required for diabetic patients. You must also be committed to lifestyle changes and regular glucose testing to ensure your pet’s success in managing their diabetes. Most animals can live a normal lifespan if they are managed properly.

  1. Lantus(r), insulin

Lantus(r), also known as Glargine(r), or Basaglar (r), is an insulin that’s also called insulin.

Lantus(r), insulin (Glargine), was developed for diabetics. It is a “peakless”, which means it keeps glucose levels within a limited range. Lantus(r) insulin (Glargine) is a long-acting insulin that is used in humans to control glucose levels. It can then be fine-tuned using short-acting diabetes insulins. Lantus is available at most drugstores and has been proven to be very effective in diabetic cats. You can get it in a vial that can be used with syringes, or as an injection pen. Basaglar, a generic version of the drug, is also available as an injection pen.

  1. Humulin

Humulin (genetically engineered human hormone available in a variety of formulations)

Humulin R is fast-acting and similar to insulin that one secretes from the body. This insulin is too fast acting and too short-lived to be useful in pets’ homes. In an emergency, it is used to reduce blood glucose levels quickly in hospitals.

Humulin N is intermediate-acting. These insulins are the most common and are often used twice daily in pets. This insulin is not sufficiently long-acting for feline use.

After sitting for some time, it is normal for the small white layer to settle inside the bottle. Before you can draw the dose, this layer must be thoroughly mixed in with the solution.


You don’t need to refrigerate your current bottle. However, if you have insulin bottles on hand, it is a good idea to keep them in the refrigerator.

  • Don’t use insulin after its expiration date. It is best to switch to a new bottle every 6-8 weeks. If kept refrigerated, Lantus(r), insulin can be stored for up to 6 month. No matter how refrigerated the insulin is, any color change could indicate contamination. If this happens, it is best to throw the bottle out.
  • Frozen insulin should not be used. Although insulin is not usually frozen, it can still be accidentally frozen in small refrigerators.
  • Insulin should not be exposed to heat or direct light.


There are two types: U-40 for insulin with a concentration of 40 units/cc and U-100 for insulin with a concentration of 100 units/cc. The insulin must be matched by the type of syringe used. Most insulins for humans (Lantus(r), Humulin(r), etc.) have 100 units per cent while most veterinary insulins, (PZI, Vetsulin, etc.) are much more concentrated at 40 units per cent.

  • Although injections can be frightening when you first start giving them, you will soon find a routine that works for you and your cat. The discomfort of the injection is minimal because the needle and syringe are small.
  • No matter what insulin type you use, all injections must be given at the exact same time each day. Insulins should be administered twice daily, or as close as possible every 12 hours. Most veterinarians recommend that the cat be fed twice daily immediately prior to insulin injections. If insulin is given first and the cat refuses food, it is crucial to feed him twice daily.
  • Sometimes, diabetes in cats is temporary. After a few months of insulin injections and diet, insulin can be released again. Although this is more likely to occur within the first few months after starting treatment, it could happen for years. Although Lantus(r), the most common insulin type that causes remission is seen, it can also be seen with other insulin. It is important to monitor your cat for signs of hypoglycemia such as lethargy and weakness. If your cat is hypoglycemic, you can check his blood sugar at home with a glucometer or give him honey or oral corn syrup. Then, take your cat to the veterinarian immediately.
  • Every cat is unique. A substitute type of insulin may be needed if a cat isn’t responding well to a certain brand of insulin. Your veterinarian will want to ensure that there aren’t any other conditions, such as diabetes or infection of the urinary tract.


What is the life expectancy of Lantus for cats?

Insulin is used twice daily by my cat. Recent research has shown that Lantus is more well tolerated by cats than any other insulins. Cats have a faster metabolism, so insulin lasts less time and causes spikes in glucose. Lantus can last for about 12 hours in cats.

Which type of insulin is best suited for cats?

Glargine and rhPZI are the most recommended insulin preparations for cats. Porcine lente zinc suspension has also been evaluated. While NPH was used in the past, it is not recommended for cats to be given twice daily.

Are 2 units of insulin too much for a cat?

It is vital to ensure that your insulin syringes are accurate. Cats should be given a subcutaneous (SC), 1 to 2 unit, twice daily.

What happens if my cat doesn’t get their insulin shot?

You should not give your pet less than the recommended dose or miss an injection. This could cause temporary recurrences of signs, such as excessive thirst and urination, but it is not life-threatening. For advice about your pet’s next dose, contact your veterinarian as soon possible.

What amount of Lantus should my cat receive?

Rx Glargine = “Lantus”: This acid pH insulin precipitates at the neutral pH of your body and is slowly absorbed. Initial doses are 1 to 2 IU/cat twice daily. It lasts between 12 and 18 hours.

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