Lantus not working!

Kathy v

Member Since 2026
My sweet baby , Bob, was diagnosed with diabetes on April 13 and immediately started on Lantus. He is only 6 years old. I haven’t been able to get him out of the 300s even with slow adjustments. He is now on 2.5 units twice a day. Initially his symptoms subsided greatly but now they are back, urination, thirst. I have been doing a curve every 4-5 days and no real progress. I don’t want to give up on Lantus because I have read it is the gold standard, but it’s been 2 1/2 months and I’m getting scared. Any suggestions?
 
Hi Kathy, Sorry to hear you're struggling to get Bob's numbers down. Do you have a spreadsheet you can share so that folks can see how the numbers have been going? Also, don't be surprised if your post gets moved to the main forum; the moderators prefer people to post there first.
 
How do I move it to the main forum? I need help! Please.
It's okay--you don't need to move it (actually you can't). I just wanted to mention it in case they do move it. Are you keeping up with Bob's numbers on a spreadsheet? I know when someone more experienced pops in here they are going to ask you about that, so I wanted to go ahead and get that information gathered for them.
 
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And if you don't have a spreadsheet, that's okay too. We'll get you set up with one so that you can track his numbers (whether you stay on the forum or not). We're very data driven here on the forum, and the spreadsheets give us a picture of daily bg numbers along with increases/decreases. That information is essential in order to identify issues and offer guidance, if necessary.
 
And if you don't have a spreadsheet, that's okay too. We'll get you set up with one so that you can track his numbers (whether you stay on the forum or not). We're very data driven here on the forum, and the spreadsheets give us a picture of daily bg numbers along with increases/decreases. That information is essential in order to identify issues and offer guidance, if necessary.
I don’t have one but I would greatly appreciate it if you can help me with that. I have all of his numbers written down very accurately so I have the information but not a spreadsheet. Please help me. I feel like every day that goes by more damage is being done because I can’t regulate him.
 
Hello and welcome. Some cats need larger doses of insulin. 2.5 units isn't very large. My girl got up to 8.75 units of Lantus. Once we see your spreadsheet data, we'll be able to help you more on dosing. Tagging @Marje and Gracie to help, though she has a big volunteer gig on Saturdays so it might take a minute to get to you.

In the meantime, I recommend you read the yellow starred Sticky Notes at the top of this forum: Lantus / Levemir / Biosimilars. If you want our help with dosing we'll need you to eventually decide which dosing method you want to use. They are described in one of those Sticky Notes.

A few questions from me, how did you figure out he needed to see the vet? What symptoms was he showing? Does he have any other medical conditions?

And most important, what food are you feeding him?
 
I don’t have one but I would greatly appreciate it if you can help me with that. I have all of his numbers written down very accurately so I have the information but not a spreadsheet. Please help me. I feel like every day that goes by more damage is being done because I can’t regulate him.
We will definitely help you with the spreadsheet! I'm going to tag @Marje and Gracie who will be able to set up the spreadsheet for you. She is not always on the forum on Saturday until later in the day, but she'll get to you asap.
 
Hello and welcome. Some cats need larger doses of insulin. 2.5 units isn't very large. My girl got up to 8.75 units of Lantus. Once we see your spreadsheet data, we'll be able to help you more on dosing. Tagging @Marje and Gracie to help, though she has a big volunteer gig on Saturdays so it might take a minute to get to you.

In the meantime, I recommend you read the yellow starred Sticky Notes at the top of this forum: Lantus / Levemir / Biosimilars. If you want our help with dosing we'll need you to eventually decide which dosing method you want to use. They are described in one of those Sticky Notes.

A few questions from me, how did you figure out he needed to see the vet? What symptoms was he showing? Does he have any other medical conditions?

And most important, what food are you feeding him?
He had all the symptoms, large amounts of urine, increased thirst and he lost 6 lbs.
we are feeding him fancy feat pate. And purinompro plan dm dietetic . No other medical conditions.
 
He had all the symptoms, large amounts of urine, increased thirst and he lost 6 lbs.
we are feeding him fancy feat pate. And purinompro plan dm dietetic . No other medical conditions.
I don’t see the yellow starred sticky notes. Where are they?
 
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