By rij061258 Latest Reply 2012-01-12 00:29:25 -0600
Started 2012-01-10 02:34:04 -0600

I was just put on Metformin today. Howlong after taking it should I test my Bg and how often to make sure I don't go low? Just read some of my other meds leave me at risk for going low. Dr did tell me what signs to look for if my bg goes low but would rather not have it go low. Thanks.

11 replies

pixsidust 2012-01-12 00:29:25 -0600 Report

I test after meals 1-2 hours after. I get low after I haven't eaten in a while like 4 pm. If you eat 3 meals and 3 snacks you should be OK

Just Joyce
Just Joyce 2012-01-10 15:17:18 -0600 Report

Hi ruth, I test every day. You have to do this on Met. In order to know what your BG is you have to test every day. I only have to test once a day but if I feel my BG is low or high, I do a quick test to make sure.

jayabee52 2012-01-10 14:36:57 -0600 Report

Howdy Ruth

How often are you testing your BG now? I queried Google about the half-life of Met, and it said the half life is about 6 hrs. Which means it should be at its peak effect 6 hrs after taking Met. So check your BG levels 5 to 6 hrs after you take it. I also learned something else about Met through the website here ~ ~ If you are undergoing a radiology or MRI test requiring contrast dye to be injected, stop taking the Met for 6 hrs before and 48 hrs after the dye is injected. That will protect your kidneys, from what happened to mine. I had to go on dialysis for 10 months, and now may need to go on it again, possibly for the rest of my life.

Blessings to you and yours


rij061258 2012-01-10 17:47:24 -0600 Report

Thanks James. I had stopped regular testing 3 months ago when my new Dr said from his labs that they wouldn't consider me a diabetic. But with other medical probs they have decided my levels are on the line and they would rather stop it from getting worse now. So back to testing but he said just to monitor the effects of the met so if i was to start to go low I could catch it early. At least with diet alone I didn't let it go completely out of wack. So I really appreciate your help. He said he didn't I would have any probs going low but upon doing some rearch of my own, I found 3 of my meds taking with Met could cause me to go low.

Just Joyce
Just Joyce 2012-01-10 15:18:50 -0600 Report

James thanks so much for sharing this information. I have a new doctor and she wanted me to have a chest Xray which I knew I didn't need and asked about what effects the Met would have and she said none. I am now changing doctors.

jayabee52 2012-01-10 15:27:15 -0600 Report

If there is no "contrast dye" she's right. If she says you'ii need to have a contrast dye then she is unaware of the danger to kidneys. To be safe ask the radiologist who takes your "picture" if dye will be needed to be injected. If you need dye you might wish then to reschedule your appointment just to be safe until the met has cleared from your system. And remember if you have the dye injected NO MET got 48 hrs after the dye is injected.

Just Joyce
Just Joyce 2012-01-10 15:38:21 -0600 Report

James the woman is a dingbat all around. She was my neighbors doctor and she had to change. She isn't familiar with diabetes at all. I tested her by asking questions. I knew the answers and she failed drastically. I went to the front desk and asked for another doctor. The doctor I had prior to retiring would never have told me to only test when I thought it was necessary nor would he have said he wasn't interested in what my test numbers were.

Caroltoo 2012-01-10 14:47:38 -0600 Report

Wow, James, is that what happened? You'd think they would warn you in advance!!!!

While you are emailing things, could I have a copy of your kidney diet. No real problems, but would like to avoid any since I did find recently that I have 1 small cyst on mine. I think it was from recent gallbladder issues, but want to give Kidneys all the support they need to heal.

jayabee52 2012-01-10 15:05:07 -0600 Report

do you want the ones that come from the online Kidney places or the one I had been sent from another member of DC? Or both!

Caroltoo 2012-01-10 15:41:11 -0600 Report

How about both. I'll do a little 5-way comparison: kidney 1, kidney 2, diabetes, glucose intolerance, and gallbladder.