Vetpen Starter Kit for Dogs & Cats, 1 IU - 16 IU in 1 unit increments

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$200.99 Autoship Price
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$200.99 Chewy Price
($200.99 /ea)

In Stock
FREE delivery
Usually arrives in 3-5 days
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No interest if paid in full in 6 months. .

Medications ship separately. Delivery times may vary.

About This Item

Details

  • VETPEN Starter Kit for Dogs & Cats comes with a VETPEN automatic insulin delivery pen, a travel pouch, a needle remover, a dose selector adaptor, a release button extension and instructions for accurate administration.
  • Use VETPEN only with VETSULIN 2.7 ml cartridges.
  • Easy, accurate dosing
  • Single-use needles
  • For both dogs and cats.
  • For animal use only.

Ingredients

Instructions

FAQ

Learn More About Vetpen From Our Team of Experts
3.8
Rated 3.8 out of 5 stars
32 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

76% Positive

Effectiveness

67% Positive

Ingredients

77% Positive

Long-Term Benefits

67% Positive

14 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 2 out of 5 stars
By Jeff on Dec 5, 2025

Seems a pricey way to go

Having cared for 2 diabetic cats my suggestion would be: get your prescription for Insulin. I used Lantus (longer acting insulin)/ go to your local pharmacy and

Having cared for 2 diabetic cats my suggestion would be: get your prescription for Insulin. I used Lantus (longer acting insulin)/ go to your local pharmacy and purchase a Lantus pen (Pharmacists will usually sell individual insulin pens out of the box of 5) Get some U100 insulin syringes marked in half units and ultra fine needles. Fill a syringe with the prescribed amount from the pen. Insert the syringe needle into the foam end of the pen. Then administer the injection. Importantly as I have told all pet owners it is most beneficial to learn how to test your pets BG at home! Its much more beneficial to test at home as vet trips can be stressful and raise BG readings often causing to inaccurate dosing. Sidebar....When your pet is first diagnosed change their diet. No kibble for cats (too many carbs) feed a high protein low carb wet food for a week and retest the BG before determining dosing. Often a better diet will result in lower readings meaning a lower insulin dose. Ultimately, we hope the pet with cleaner diet and insulin, testing and accurate dosing they will go into remission or OTJ (Off the juice). My current cat Oliver has been in remission for 6 years and is doing well.


Rated 2 out of 5 stars
By Wendy on Aug 21, 2025

Not for us

I can see that this might be a helpful tool for someone who can't use a syringe for some reason, but we got it hoping it would make the injections faster. You actually

I can see that this might be a helpful tool for someone who can't use a syringe for some reason, but we got it hoping it would make the injections faster. You actually have to leave the needle in for 5 extra seconds to deliver the dose. That was the opposite of what we needed. I wish I would have understood that ahead of time because it was very expensive


Rated 1 out of 5 stars
By Patricia on Nov 4, 2025

Not worth it

Don’t mistake this for a spring loaded inject, you still do the injection, all this pen does is push the plunger for you

Don’t mistake this for a spring loaded inject, you still do the injection, all this pen does is push the plunger for you


Rated 5 out of 5 stars
By Cindy on Feb 17, 2025

Very nice and easy to use.

I am so happy we were able to buy this for our boy Doug who is diabetic. It’s easy to use and works great. It is very costly but thankfully our pet insurance covers

I am so happy we were able to buy this for our boy Doug who is diabetic. It’s easy to use and works great. It is very costly but thankfully our pet insurance covers 90% of it and we pay the other 10%. But I would recommend Vet Pen if it’s in your budget.


Rated 2 out of 5 stars
By Amanda on Feb 29, 2024

pen seems inaccurate....maybe not for small dogs

we bought this hoping it would assuage are dogs anxiety with 12hr injections. I WISH I COULD RETURN IT. I imagine it cab helpful with larger dogs dogs less reactive

we bought this hoping it would assuage are dogs anxiety with 12hr injections. I WISH I COULD RETURN IT. I imagine it cab helpful with larger dogs dogs less reactive to injection. I tried several times. kept it in place for the suggested timeout every time insulin was just leaking out the needle. It could be some user error and related to having a "difficult" dog to inject, but I should not have to hold him in place for a minute. with the length I do find it also difficult to use on small dogs given a subcutaneous injection.


Rated 5 out of 5 stars
By Jessica on Oct 2, 2023

Life saver...literally!

Our aging Cairn Terrier was diagnosed with diabetes about 5-6 months ago and she really struggled with the insulin vial & U-40 syringe method. Our vet wasn't familiar

Our aging Cairn Terrier was diagnosed with diabetes about 5-6 months ago and she really struggled with the insulin vial & U-40 syringe method. Our vet wasn't familiar with the VetPen, but she had us get it, bring it in, and then monitor our dog on it. I honestly think it delivers better than the standard vial and the needle is smaller than the U-40, so there isn't as much pain involved. We are such believers that we bought an extra pen just to have on hand. If you have a diabetic animal, this is the way to go.


Rated 1 out of 5 stars
By Leah on Nov 22, 2022

Delicate and poorly made

178 dollar for something so fragile. One I can admit it slipped from my hands and that's on me. The second one I bought lasted barely a couple weeks. The lid to

178 dollar for something so fragile. One I can admit it slipped from my hands and that's on me. The second one I bought lasted barely a couple weeks. The lid to the pen was loose and the thing slipped right out and broke again. For the record, I had the lid completely on. It was loose no matter what. Now I have to shell out even more money in this bad economy. Sadly, there is no alternative to this pen and no seemingly possible way to get replacement parts.


Rated 1 out of 5 stars
By AxelRose1 on Jan 20, 2023

Not for us

The "click" noise is definitely not the sound of a pen. It's much louder. If your animal startles easily or doesn't like loud noises, this is not for you.

The "click" noise is definitely not the sound of a pen. It's much louder. If your animal startles easily or doesn't like loud noises, this is not for you.


Rated 4 out of 5 stars
By Valeska on Sep 14, 2022

Good investment

I was weary because of the price but overall I really like the pen version. Less needle biohazard and waste. I don't waste any vials because expiration like I

I was weary because of the price but overall I really like the pen version. Less needle biohazard and waste. I don't waste any vials because expiration like I do with the 10ml vials. My cat uses 3u twice a day. There's little difference giving the insulin for me as my cat isn't one to try to run away. He doesn't care if I poke him. Just note, you do have to wait about 5 seconds after injection before removing the needle to allow it all to be deposited. I give it 8-10secd. There may be differences in how fast it comes out as I have removed it too soon. Also, I tried to have my dad learn and it was difficult for him to use but I suspect he would have the same if not more difficulties with the syringe. 1 thing I didn't like was the glass vials are not drop proof. I drop one and it broke so I wasted a whole vial. There tends to be a few units left in the vial when it finished. I used my old syringes to draw up his dinner dose. The tiny blue zipper case is kinda useless because it's too small.


Rated 5 out of 5 stars
By Patricia on Feb 20, 2022

the greatest

This is my third purchase of the vetpen, I absolutely love it. It would be even better if they would make .05 dose in the 16 units.

This is my third purchase of the vetpen, I absolutely love it. It would be even better if they would make .05 dose in the 16 units.