Insulin regular + Insulin Isophane: Brands, Price & Uses in Bangladesh

Insulin regular + Insulin Isophane is a premixed (biphasic) insulin preparation combining a rapid/short-acting soluble insulin with an intermediate-acting isophane (NPH) insulin suspension in a fixed ratio (commonly 30:70). It is indicated for:

• Type 1 diabetes mellitus - as part of an insulin regimen to achieve glycemic control, when a fixed combination of prandial and basal coverage from a single injection is appropriate.
• Type 2 diabetes mellitus - in patients who require insulin therapy for glycemic control, either alone or in combination with oral antidiabetic agents, when a premixed regimen suits their meal pattern and lifestyle.

This is an established, guideline-supported use for patients whose insulin requirements are relatively stable and predictable; it is not intended for patients who need flexible, independently adjustable prandial and basal doses.

Dosage of Insulin regular + Insulin Isophane is individualized based on blood glucose monitoring, HbA1c targets, body weight, diet, activity level, and concurrent illness. It is administered by subcutaneous injection only (never intravenously or intramuscularly), typically 30 minutes before a meal, usually once or twice daily (e.g., before breakfast and before the evening meal).

Administration technique

• Before each use, gently roll the vial or pen between the palms and/or invert it several times (do not shake vigorously) until the suspension is uniformly cloudy/milky - the isophane component must be fully resuspended for accurate dosing.
• Inject subcutaneously into the abdomen, thigh, upper arm, or buttock; rotate injection sites within the chosen area to reduce the risk of lipodystrophy.
• Doses are typically titrated gradually (every few days) based on self-monitored blood glucose, under physician guidance.

See Use in Special Populations for adjustments in renal/hepatic impairment, and Pediatric Uses for use in children.

The most common and most serious adverse effect of Insulin regular + Insulin Isophane is hypoglycemia, which can present as sweating, tremor, palpitations, hunger, confusion, and, if severe, seizures or loss of consciousness; the mixed action profile can make the timing of peak hypoglycemia risk harder to predict than with a single-acting insulin. Other adverse effects include:

• Injection-site reactions (redness, swelling, itching) and, with repeated injection at the same site, lipodystrophy (fat thickening or atrophy) that can affect insulin absorption.
• Weight gain.
• Hypokalemia (low blood potassium), particularly with higher doses or in combination with other potassium-lowering factors.
• Rarely, generalized hypersensitivity reactions such as rash, urticaria, or, very rarely, anaphylaxis.
• Peripheral edema, especially at the start of insulin therapy.