<p>The blood glucose lowering effect of insulin is due to the facilitated uptake of glucose following binding of insulin to receptors on muscle and fat cells and to the simultaneous inhibition of glucose output from the liver. Insulatard is a long-acting insulin. Onset of action is within 1&frac12; hours, reaches a maximum effect within 4-12 hours and the entire time of duration is approximately 24 hours.<br />
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Insulin in the blood stream has a half-life of a few minutes. Consequently, the time-action profile of an insulin preparation is determined solely by its absorption characteristics. This process is influenced by several factors (e.g. insulin dosage, injection route and site, thickness of subcutaneous fat, type of diabetes). The pharmacokinetics of insulins is therefore affected by significant intra- and inter-individual variation</p>