My husband was formally diagnosed with type 2 diabetes in 2010. He was given a prescription for metformin but chose not to take it due to the list of side effects. He does take some supplements: Blood Sugar Control, Chromium, Cinnamon and Probiotics. His blood sugar has highs and lows but he checks very infrequently. His last A1c was 6.8. He will not excersize or eat a proper diet. I have tried to help with his choices but only stir resentment and anger.
I will answer this in parts. Which form if metformin was his prescription for? Many people to have problems with the regular metformin. Fewer people have problems with the extended release version (ER). If he prescription is for the regular metformin, then he may be right in his concern. The ER generally does not cause for most people and if it does, then he should have a talk with his doctor and seriously consider insulin as his next step. Metformin is the safest and most tested medication for type 2 diabetes and people generally do well with it - providing (yes there is always a but) they can tolerate the side effects.
You gave us no information about what your insurance will cover, or if the doctor would be willing to go to bat for extra test strips to help for about three or four months - some will encourage insurance for even longer. He needs to test regularly and several times each day at the proper intervals before and after meals.
The supplements are not bad, but the cinnamon is not going to help long term. I have never heard of the blood sugar control and I suspect he is wasting money there.
I don't know if his mood swings are a result of my reminders of his bad choices or his own guilt dealing with a sugar/carb addiction. His mood swings come from nowhere sometimes and I don't think I am the cause. Sometimes it is road rage out of nowhere....very similar to bipolar disorder. He was in one of his moods last weekend when my granddaughter was visiting, very mean. It broke my heart and we have not spoken since. I left and went to our vacation home. I am prepared to seek counseling. Any suggentions would be welcome.
Some of his mood swings can be attributed to the blood glucose swings. I will suggest that many men view the reminders from their spouse as being nagging and this will set them off in negative ways. This is counter productive and needs to be avoided. My mentor, David Mendosa has this blog which may also give you ideas
Suppose Your Husband Has Diabetes - Husband or Wife - Diabetes .
You need to take the positive road and encourage him to reconsider metformin or insulin if he will not. Tell him you know he can manage his diabetes and at the same time let him know that you will help where able.
You might start an exercise routine on your own and after some time encourage him to join you. Do not try to force him.
Continue to ask questions here as many people can provide assistance and answer questions. The best of luck to you and you husband.