Hi Mark,
Some people just cannot get on with levemir or lantus. I used both of these when I was diagnosed 4 years ago. At first I noticed that I was getting tired very quickly and exhausted at the end of my shift. I am a home shopping delivery driver for a supermarket so it a tiring job anyway. I had foggy head at times...feeling drugged up and I noticed that I was walking much slower that I usually do. I had NO joint pains...luckily... but the tiredness became fatigue and exhaustion. After about a year like this taking 60 units twice a day, DSN etc, knew how I was feeling..I was put onto lantus and I was only taking about 30 units a day. After about 2 months feeling better it all started again. By this time I had to reduce my hours at work and I was extremely exhausted. I had loads of tests but all was ok. After 2 more years of hell my DSN said that she didn't know what was wrong with me so I looked up the diabetes forums.. I type in lanuts tiredness and wow!!!!realised that many people had same symptomss as I so I informed the diabetic team but They didn't want to know....Anyway after complaining to the hospital I was allowed to try porcine insulins and within days of coming off lantus and novorapid ALL bad feelings went away.
So Mark watch how you are feeling, read up on lantus problems on the diabetic forums...Your body may NOT be able to use lantus or levemir. Good Luck!!!