UltiCare VetRx Insulin Syringes U-40 12.7mm x 29G

By UltiCare VetRx
Rated 4.2055 out of 5 stars
Prescription Item


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$22.95Chewy Price
$21.80Autoship Price
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Total Price: $207.93

About This Item


Insulin Syringes/Needles U-40 29 Gauge x 0.5-in are used for the injection of U-40 (40 units per ml) insulin in pets with diabetes. However, it’s important to note that more than one concentration of insulin exists, so be sure that the syringe used matches the type of insulin prescribed for your pet.

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.

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About UltiCare VetRX

UltiCare VetRx Insulin Syringes

Pets are important members of the family, so naturally, you want the very best for them. Optimize care for your pets with diabetes with UltiCare VetRx Insulin Syringes. They help provide comfortable and accurate dosing of insulin to help you better manage your pet’s diabetes. Available in boxes or in the UltiGuard Safe Pack, a dual-purpose system that dispenses new syringes and provides safe disposal for used syringes all in one, so you don’t have to hassle with a separate sharps container.

Choosing the Right Insulin Syringe

Your veterinarian may prescribe U-40 or U-100 insulin for your pet, and it is critical to use the corresponding syringe for proper dosing.

U-40 Insulin Syringes

The “U” refers to units of active insulin, and U-40 insulin has 40 units of insulin per milliliter of liquid. This more soluble type of insulin is designed specifically for cats and dogs, and you must always use a U-40 insulin syringe, which is smaller and has a red cap, to administer it.

U-100 Insulin Syringes

U-100 insulin has 100 units of insulin per liquid milliliter, so it has 2.5 times the insulin as U-40 insulin by volume. If your vet prescribes this type of insulin, it is essential to administer it using U-100 syringes, which are larger and have an orange cap, to ensure proper dosing.

The Quality You Expect

From plunger to tip, UltiCare VetRx insulin syringes are precision engineered to provide superior comfort for your pet.

Human Grade

UltiCare VetRx insulin syringes are human grade, premium quality syringes made for use with U-40 or U-100 insulin.

Superior Comfort

The tri-bevel tip is micro polished and silicone lubricated for easy insertion and effortless glide.

Easy and Accurate Dosing

A clear barrel with bold scale markings and large barrel flanges provides accurate dosing and a good grip for control.

Step-by-Step Guides

UltiCare VetRx offers a suite of diabetes care resources to help you manage your pet’s diabetes with confidence.

Designed With Safety in Mind

The UltiCare VetRx UltiGuard Safe Pack allows you to easily dispense premium quality UltiCare syringes and dispose of them safely once you’re done. Each UltiGuard Safe Pack contains 100 insulin syringes. After using a syringe, simply pop it in the top, then drop and roll it safely out the way. There’s no need to spend more on a separate sharps container with this convenient, affordable solution that helps keep your home and community safe.

An All-In-One Solution

The UltiGuard Safe Pack features an upper and lower chamber. The lower chamber dispenses new insulin syringes, while the upper chamber provides a safe place to discard used ones. After depositing a used syringe in the top, turn the wheel on the side of the container to secure it safely away. Once you’ve used and disposed of all the syringes in the Safe Pack, follow state and local guidelines for proper disposal.

About UltiCare VetRx

UltiCare VetRx optimizes care for pets with diabetes. They make premium insulin syringes you can order on their own or as part of the UltiGuard Safe Pack, a convenient all-in-one dispensing and disposal solution that helps keep healthcare providers, pet owners, pets, and communities safe from accidental needle stick injuries. UltiCare VetRx insulin syringes are made specifically for use with either U-100 or U-40 insulin and come in 3/10cc, 1/2cc and 1cc sizes.

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ReviewsWrite a Review

Rated 4.2055 out of 5 stars
73 Ratings
Would recommend to a friend

69 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 1 out of 5 stars
By Cindy on Jul 27, 2023

Not a good product

The needle is well marked, however have had numerous needles that would not penetrate the rubber on the insulin bottle. And if you're lucky to get the needle to penetrate the bottle, the needle immediately bends at a 90 degree angle when inserting into our cat. Thus the insulin goes onto the cat's hair instead of into the cat. Wasted that insulin..... Need to start all over. And at almost $70 for a bottle of insulin, every drop of insulin is precious. HATE the wasted insulin!!!!! There are 2 humans administering this. And this has happened to both of us. PLEASE get the Monoject syringes back in stock!!!!

Rated 5 out of 5 stars
By MomofCharlie on Jul 27, 2023

Ulticare VetRx Syringes - Prozinc U40 29g

I had to research to find another syringe that worked well with Prozinc since Monoject syringes were out of stock. Charlie, our diabetic cat tolerated the Monoject ones so I was hesitant to try something new. I was super surprised that actually they are very comparable if not better! I ALWAYS prime the syringe & we’ve had no problems! Just make sure you pick the right size for your insulin requirements but for Prozinc U40 29g needles this was purrfect for us!

Rated 3 out of 5 stars
By LupinsMom on Aug 21, 2023

Good for the money

Our kitty was recently diagnosed with diabetes. The initial box of syringes that I purchased from the vet ran out, so I bought these. They work fine except that the plunger on the syringe sticks when you initially pull it to fill the syringe with insulin. Annoying, but not the end of the world.

Rated 5 out of 5 stars
By kaspi on Jul 2, 2023

Good Syringes at a Good Cost

My cat is diabetic and, as those who have diabetic pets know, the cost for their care is expensive. These needles are relatively inexpensive for a quantity of 100. I'm a little on the fence about the packaging. The needles are bagged in groups of ten and the plunger has a cap which seems unnecessary. However, I can see if you were traveling with your animal, the bags would be handy, even though they aren't resealable. I've been using them for a month with no issues with the plunger and the needle caps slide on easily for safety and disposing.

Rated 5 out of 5 stars
By 9catmom on Jun 26, 2023

The brand my vet recommends

This is the brand of needles that my vet recommended, but I can get for less at Chewy. I also sometimes get the version that comes with the sharps box, but I find you can fit more needles in the box than come with it, so I buy the separate needles. The sharps box only adds like $10 bucks, but you can also use a heavy duty plastic bottle, like a detergent bottle, and mark it sharps. I can stop by my local medical center and drop them off any time the lab is open. So, considering how not convenient it is to have a diabetic kitty, this is about as easy as it can be made, I think.

Rated 2 out of 5 stars
By Beth on Aug 28, 2023

Not the best

These insulin syringes are much lower quality than the Monoject brand chewy used to stock. Needle is dull after just drawing insulin from bottle so harder to inject the cat. Bring back monoject !!!

Rated 2 out of 5 stars
By Charles on Aug 14, 2023


Rated 2 out of 5 stars
By Car on Aug 26, 2023

They are very good product but to expensive for my budget.

This is a very good product but it’s to expensive for my budget would like to go back to my regular insulin needles that I had before these they do great and are less expensive. Sorry

Rated 5 out of 5 stars
By Mic on Jul 27, 2023

Good syringes

The syringes appear to be just as good as the other brand that I was buying. But they have been out of stock. The only thing I dislike is they are not packaged individually to be sterile. They are 10 in a pack so when you open the pack all of them are open to germs.

Rated 2 out of 5 stars
By Nikki on Jun 12, 2023

U-40 3/10cc WITHOUT half unit markings is awful

I used it for 10 days thinking maybe I was just being difficult, but both my husband and I noticed that the U-40, 1/2 inch, 3/10 cc (purple box) without the half unit marking were noticeably different from the ones with the half-unit markings, which we’d used exclusively for months since Bro became diabetic. The ones without the half unit markings left a bubble in 3 out of 4 times I drew the insulin, and made my cat complain when poked. He never noticed or cared with the other ones! These syringes suck.