Can you post a screen shot of your Libre graph showing the dip?
The rule of 15 is where, when you are hypo, you eat/drink 15g of fast acting carbs like 3 jelly babies or 4-5 glucose tablets or a small can of full sugar coke or a small carton of orange juice or whatever your chosen hypo treatment is, wait 15mins and retest,
always with a finger prick because Libre or other CGM are not reliable in these situations and will usually suggest your levels have dropped lower 15 mins after treatment due to the way they work, which can make you panic and eat more glucose and end up overtreating and going high, whereas a finger prick will usually show you have come back up above 4 in that first 15 mins. However, if you haven't, then you have another 15g fast acting carbs and wait another 15mins and test again with a finger prick until levels do come up above 4. You may then want to have a small 10g slower acting carb snack like a digestive biscuit although personally my levels would be in orbit if I had 15g carbs and a digestive biscuit. I usually just need 1 or 2 JBs (5-10g carbs) to treat my hypos.
Top tip when treating a hypo is to chew it really well if it is solid or swill the liquid around in your mouth before you swallow it, as the glucose will absorb quicker through your mouth than your stomach and your mouth is closer to your brain, so should work more effectively than just a couple of chews and then swallowing down.
With nocturnal hypos, it is really important not to rely on Libre and double check, especially if your levels have dipped sharply, because generally there is not sufficient insulin in your system to drop you slow suddenly unless you ate your evening meal very late and had bolus (fast acting/mealtime) insulin in your system when you went to bed, but it doesn't look like you are using a fast acting insulin with meals, just Abasaglar which is a basal (long acting) insulin.
When do you take your insulin? Just wondering if perhaps you are taking it too early in the evening and you are getting a peak of activity from it at the point when your body needs the least amount of insulin. Generally it peaks about 5 hours after injecting, so best to inject it as late as possible before you go to sleep if you are taking it on an evening. The other option is to take it as soon as you wake up in the morning, particularly if you see a pattern of nocturnal hypos and then by the following night there is just the tail end of it which poses much less of a risk of nocturnal hypo.
My first few hypos made me feel pretty rough for a couple of hours but now I can just eat a jelly baby and carry on with whatever I am doing and they hardly bother me at all.
Also worth asking, what level you have your Libre alarm set at? My low alarm is set at 4.5 to give me time to catch a hypo before it happens. Doesn't always work, but there have been times when I have reached 4.2 with a vertical downward arrow and 2 jelly babies (my hypo heroes
) can turn it around before I hit the red.
Hope you are feeling better this evening, but I would look at taking your insulin as late as possible, if you were previously taking it earlier in the evening.
