A Highlight from My Diabetes Blooper Reel

By Dr. Jeremy Pettus

I want to share something that happened to me recently that was really pretty nuts and worthy of submission to the Diabetes Bloopers archives…

For various reasons, my diabetes regimen has involved taking a long-acting basal insulin at bedtime and then an inhaled insulin for all my meals and corrections.  Lately my blood sugars had been more chaotic than usual so I decided to try a new basal insulin that lasts around 36 hours and has been shown to have a more consistent delivery across the day, and with less hypoglycemia.

The thing about these new basal insulins is that once they get to a steady dose in your body, they work really really well.  However, when you FIRST start on them they can take a while to get working.  That means for the first couple of days you start on them, it feels like they aren’t working.  So what do I do to ‘get things started’?

Well, I’ve done this before and it actually works well; I take a loading dose of the basal insulin to get the concentrations up and then titrate down to my usual dose.  OK, my usual basal dose is about 25 units a day so, for the first day, I wanted to take 50 units, then 40 units the next day, then 30, and then 25.  Again, it sounds crazy, but it has worked for me in the past, so lay off! (…but don’t try this yourself unless you talk to you doctor)


So, there I am on a Saturday night.  It’s about 7pm and I take my first dose of 50 units of my new basal insulin.  About 45 minutes later, I start feeling low.  I know what you are thinking, “Well, of course you got low with all that basal insulin!”  But, just stop judging and listen….

So I fire up a big bowl of Special K cereal with extra honey on the top.  After I throw that back I’m still feeling low (or just really hungry), so I fire up a second bowl.  At this point I’m thinking that I’m going to go sky high for sure, but screw it – I’m low and I want some cereal!  About 20 minutes after my second bowl, sure enough my CGM buzzes at me…. only I wasn’t high, I was still LOW!

“How could this be?” I thought.  I just ate at least 100 grams of carbs and I’m low?!

There is NO way the basal insulin could be acting this fast, so I thought I’d go to the fridge and look at the pen I used.  Sure enough, instead of grabbing my new basal insulin pen, I had grabbed my rapid acting insulin pen!!!  And it wasn’t just any rapid acting insulin, it was actually this new stuff that is even faster acting.  In my defense, the pens for the faster acting insulin, and my basal insulin do look similar.

So, instead of taking 50 units of basal insulin, I had taken 50 units of rapid acting insulin.  

[Explicit language here].


Let me also say that if I have a BIG meal, I would normally take 15 units of rapid acting insulin tops, so 50 units is BY FAR the largest dose I have ever taken.  So what did I do? Well, let me channel The Very Hungry Caterpillar and explain.

  • At 7:00pm Jeremy ate 2 HUGE bowls of cold cereal with a lot of honey on top, but he was still hungry….
  • At 7:45pm, Jeremy ate half of a large pizza and drank one crap-ton of juice, but he was still hungry….
  • At 8:30pm, Jeremy ate two “rows” of Oreos and almost an entire gallon of milk, but he was still hungry…
  • At 9:30pm, Jeremy ate a row of Ritz crackers with peanut butter piled high on every single one…


At about 10:00pm, I really just couldn’t eat any more.  My blood sugar was hovering in the 60-70 range this whole time, and I was over it.  I had contemplated going to the ER when I first realized what had happened, but figured I would muscle my way through with food first.  I eventually just took out my Glucagon kit (thank God I had one) and gave myself a dose.  It’s the only time I’ve had to take Glucagon and good lord those needles are fat.  It was serious business just getting it through my skin!

Right after I took my Glucagon I realized, “Man, I still don’t have any basal insulin on board…”

Begrudgingly, I took my usual dose of basal insulin just so I didn’t go sky high overnight.  I have to tell you it was very, very strange to take a shot of glucagon and a shot of insulin about 20 seconds apart…. but it was the right thing to do.

Anyway, I eventually went high overnight, but not too badly.  I survived, but I just felt like garbage.  I mean, here I was trying to do something to get my diabetes back on track and then I end up almost killing myself and eating about 3,000 calories.  Needless to say, this wasn’t good for my overall feeling of health and diabetes-Zen. I also texted Steve at 10:30pm-ish PST and he was in Toronto and of course having drinks in a bar. It was so nice to get some reassuring texts back…like “Get your stuff together!”

The other crazy thing is that, thank God I took my insulin around 7:00pm instead of at bedtime like I usually do.  If I had taken 50 units of rapid acting insulin and gone to bed, I could have been in really big trouble.  Ugh.  Nothing else to say about that.  Just straight up, ugh.


So, I’m telling you this story because it makes me realize that this kind of thing can happen to anybody. I like to think of myself as a well-educated type 1, and I just screwed up ROYALLY.  Insulin and I have been good friends for a while now, but every once in a while, it reminds me who is boss.

I have RE-learned some diabetes 101 lessons, and here they are:

  • Always double check what you are injecting.
  • Separate your basal and fast acting insulins.
  • ALWAYS have Glucagon on hand, and know how to use it!




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    Been there, done that. Except that I did the fast acting at bedtime. Normal basal was 22U, but I took 22 fast acting at 11:30 PM. Sao I then took normal basal and stayed up ’til 4AM playing computer games, taking blood sugar every 30 minutes and trying to balance things with raiding the fridge for leftovers and munching graham crackers.

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    Another reason I love Afrezza! Pretty tough mix up the little inhaler with my Tresiba!!

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    I am a newly diagnosed T1, lada patient. I also mixed up my pens at bedtime. Not happened for a while so I went to sleep. Holy smokes, thankfully I woke up and was able to get my husband to help me. I was a mess and couldn’t walk or complete a sentence. We now are better educated on what to do, how to handle emergencies and never, ever are my bolus and basal pens in the same room.

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      Hi Susie,

      Thank you for sharing…experiences like that are so scary but it’s important to know we are all human and doing the best we can, and that is a GREAT idea to keep your pens in different rooms! Thanks for the tip!

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    The plastic on Fiasp and Tresiba pens NEEDS to be diffenent colors!!! I can’t say this enough. I have done this, but thankfully I injected my basal at mealtime and had to do a simple correction. I’m always so afraid of dosing Fiasp mistakenly right before bed.

  5. Oh my gosh I have done something very similar! I was completely exhausted from a long day of entertaining family. Around 2am I got a high BG alert from my CGM…180mg/dl. Instead of inputting that into the BG portion of my pump for a correction, I input it into the carb portion and gave myself a bolus for 180g of carbs!!! Needless to say I was up all night and ate the entire contents of my refrigerator. Everyone makes mistakes, even medical professionals! Very scary though…

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