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The European Medicines Agency recently approved Abasria, a "new" form of long-lasting insulin that can be used by children and adults with either type 1 or type 2 diabetes. But new understanding how to use insulin may be more valuable than a new product.

European diabetics have a "new" form of long-lasting insulin, Abasria, which is a "biosimilar" product that is chemically identical to the American product Lantus. Approving this new insulin will probably drive down prices for European health agencies that buy the product in bulk for their entire countries, but will have no effect on insulin prices for most Europeans - who get their insulin under nationally managed health insurance plans - or for most diabetics in the USA--where only Lantus is approved. 

Americans who don't have health insurance will still have to pay $220 per vial for Lantus or $50 per vial for Humulin N, or maybe $25 per vial for the discount insulin at Walmart.

But using long-lasting insulins correctly can make a huge difference for children and adults who have diabetes. Here's what diabetics and the parents of American children need to know about long-lasting insulin, starting with the basics.

Long-lasting insulins are given in larger doses, and the dosage makes the difference.

Most diabetics who have to use insulin are told that Humolog R and Novolog and similar products are "fast acting" insulins to be taken in smaller doses just before meals, and Humulin N and Lantus are "slow acting" or basal insulins that are taken in larger doses once or maybe twice a day to cover the slow upward creep of blood sugar levels during sleep or after strenuous exercise. (As an aside, strenuous exercise, despite what diabetics are told, raises blood sugar levels, while slow exercise lowers them.) 

A diabetic might be told to inject 10 units of Novolog 20 minutes before every meal and 50 units of Lantus twice a day in the morning and in the evening. But the fact is, "fast" insulin can last 24 hours, if you take enough, and "slow" insulin can cover the increase in blood sugars after your meals if you follow your prescribed diet.

Any kind of insulin you take in a dose of more than 7 units (as they are measured in the US) becomes a "long lasting" insulin.

The fact is, any insulin you take in a large dose (large being what is large for you) becomes long-acting. Any dose of insulin greater than 7 units is incompletely absorbed into the bloodstream. 

The extra insulin enters the bloodstream unpredictably, maybe leaving blood glucose levels too high or maybe causing hypoglycemia.

We aren't going to tell you not to follow your doctor's orders regarding the insulin you use. But we do suggest that if you are having trouble coming up with $220 a vial for Lantus, or if your local pharmacy doesn't stock the newly approved Abasria, ask if there is not some way to change the dosage of less expensive insulins for you or your child to keep your blood sugar levels in check.

And we're certainly not going to tell you to take less insulin. If you are currently taking 30 units of Novolog a day and 100 units of Lantus a day, then dropping down to just 30 units a day isn't going to keep you blood sugar levels in check. You almost certainly need the same number of units of insulin every day, until you make changes in diet and exercise or other medications. But you may be able to keep your sugars regulated with insulin that does not cost as much.

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