I wish some of you would refer to controlled studies confirming the claims.
There have been almost 'religious' kind of wars among believers going on between the Levemir and Lantus camps, no doubt fuelled by their respective rich manufacturers and commercial staff. That Johnny eats a banana and is hit by a roof tile when walking out the door does not mean that bananas necessarily are bad. Just as the cancer scare on Lantus that was brought up in the UK a while back was all bogus.
If so, the product would have been scrutinized and pulled from market. Probably why there are no known when and whos...
Neither are the typical diabetes clinics.
And I wholeheartedly agree that diabetics should absolutely and with no hesitation bring feedback to the source if experiencing anything abnormal.
Will politely have to disagree with you on this one, as all clinical studies have shown the opposite:
1. Levemir has a taller peak 4-6 hours after injection compared to Lantus, which has almost none.
2. Lantus is effective with stable curve 4-8 hours longer than Levemir, which has trailing ramp-down in comparison.
And for your last comment: Lantus is typically active for 18-26 hours in most people, where end-effect trails out fast, so you can easily change dose according to your daily planning. Please also note that taking Levemir/Lantus in the morning is actually the optimal, for short-term planning mode of life, if that is your priority. And please note that I am not religious myself. We are all different and find what best works for us. I am all for it. But please lets stop promoting unconfirmed claims/rumours.