Mixtard 30

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Mixtard 30

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Method of action: Drugs Used In Diabets

Treatment option: Diabetes Mellitus

Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Mixtard 30

Quick Facts Table

Property Description
Active Ingredient Human Insulin (rDNA)
Form Suspension for injection
Pharmacological Class Antidiabetic Agent, Human Insulin
Common Use Glycemic control
Origin Biosynthetic (Human Recombinant)

What Type of Medicine is Mixtard 30?

Mixtard 30 is a prescription-only antidiabetic agent classified as a human biphasic insulin preparation, utilized for insulin replacement therapy to achieve overall glycemic control. Its active substance is human insulin, a polypeptide hormone produced through recombinant DNA technology. This process yields a molecule that is structurally identical to the insulin naturally produced by the human body. Insulin is essential for regulating the metabolism of carbohydrates, fats, and proteins. This confirms that the drug’s core function is to manage the body’s major energy sources. Mixtard 30 is clinically recognized as a foundational tool for initiating combined basal and mealtime insulin coverage.

Composition: Understanding the Mixtard 30/70 Ratio

The medicine is defined by its specific formulation as an aqueous suspension for injection, characterized by a fixed 30/70 ratio of its active components. This ratio signifies that the preparation contains 30% soluble human insulin (the short-acting element) and 70% isophane human insulin (the intermediate-acting element). This specific mixture is a combination product, providing a distinctive feature that simplifies the need for separate injections of fast and prolonged insulin types. The prolonged action is achieved through the inclusion of protamine and zinc, which slow the absorption of the isophane component. Fixed-ratio biphasic insulins are a recognized standard for effective diabetes maintenance therapy.

General Purpose of Biphasic Insulin Therapy

The core purpose of this biphasic formulation is to address two distinct metabolic needs simultaneously: rapid glucose clearance following a meal and the necessary sustained insulin activity throughout the day. The dual-action profile facilitates the movement of circulating glucose from the bloodstream into the body’s cells, aiding in glucose uptake. By providing both immediate and prolonged activity, this preparation helps maintain the stability of blood glucose levels, contributing to overall metabolic stability.

Regulatory References

  1. Biochemistry, Insulin Metabolic Effects
  2. Mixtard - EPAR summary for the public

What side effects are possible with Mixtard 30?

Possible Side Effects and Safety Information

Mixtard 30 is classified by regulatory authorities as a human biphasic insulin preparation with an officially documented safety profile. The most frequently expected adverse event is hypoglycaemia (low blood glucose), which is categorized as a Very Common effect (ge1 in 10 patients) in official labeling, representing the core metabolic risk of all insulin products.

Safety Classifications and Organ Systems

Other documented effects are classified by frequency across various System-Organ Classes (SOCs):

Frequency Classification Examples (SOCs Affected)
Uncommon (ge1/1,000 to <1/100) Injection site reactions, Lipodystrophy (Skin), Oedema (General), Peripheral neuropathy (Nervous System), Urticaria/rash (Immune System).
Very Rare (<1/10,000) Anaphylactic reactions (Immune System), Refraction disorders (Eye Disorders).

Serious Reactions and Contextual Safety

Serious adverse reactions listed in official documents include Severe Hypoglycaemia, which may lead to unconsciousness or permanent impairment, and Anaphylactic Reactions, which are potentially life-threatening systemic allergic responses.

Safety characteristics are also defined by exposure patterns. Oedema and Injection site reactions may be transitory and typically occur at the initiation of treatment. Regulatory texts state that rapid improvement in blood glucose control may be associated with the temporary worsening of diabetic retinopathy.

Specific considerations exist for special populations, as dose adjustments may be necessary for patients with renal or hepatic impairment. Furthermore, the combination of insulin with certain oral medications, such as thiazolidinediones, has been associated with reports of cardiac failure in patients with pre-existing risk factors, requiring particular caution.

Overdose and Emergency Response

Overdose and when to seek help

The fundamental manifestation of an overdose of Mixtard 30 is hypoglycaemia (low blood glucose), which arises when the administered insulin activity exceeds the metabolic requirement. Regulatory documents define the spectrum of this event, categorizing it into mild and severe episodes.

Documented Overdose Manifestations

Mild presentations, as documented in official prescribing information, include physiological signs such as cold sweats, cool pale skin, tremor, fatigue, and nervousness. As the event progresses, symptoms affecting the central nervous system may emerge, including confusion, difficulty in concentration, drowsiness, and headache. Severe outcomes may also involve adverse effects on the cardiovascular system, such as palpitation, and the physiological finding of hypokalemia.

When to Seek Immediate Medical Help

Immediate medical attention is officially required for all signs of severe hypoglycaemia. These severe manifestations, which include unconsciousness, convulsions, or coma, are associated with the risk of permanent impairment of brain function or death. Regulatory guidance mandates that emergency medical help be sought immediately if a patient exhibits these severe signs.

Official Management Strategy

The required emergency response for severe overdose is the administration of Glucagon (by an instructed person via injection) or immediate treatment with Intravenous Glucose by a healthcare professional. Following stabilization, frequent blood glucose monitoring and prolonged observation periods in a clinical setting are mandated to mitigate the risk of recurrent hypoglycaemia, which can be a consequence of the product's biphasic formulation.

Therapeutic Uses of Mixtard 30

What Mixtard 30 Treats: Main Uses and Benefits

Mixtard 30 is a treatment generally considered relevant for managing patients with Diabetes Mellitus, a condition where the body requires external support for glucose regulation. This preparation is commonly used for managing both Type 1 (insulin-deficient) and Type 2 (insulin-resistant) diabetes.


Comprehensive Symptom Management and Stability

This preparation is applied across domains where additional symptomatic support is needed, commonly encompassing adults, adolescents, children, and pregnant patients (Gestational Diabetes). The biphasic formulation provides dual support, playing a role in managing the acute post-meal glucose elevation and the persistent chronic high blood sugar that occurs between meals. This integrated approach is relevant when groups of symptoms appear suddenly or fluctuate, helping to address general fatigue, excessive thirst, and frequent urination.

Easing Symptom Burden and Supporting Long-Term Stability

By contributing to comprehensive and consistent glycemic control, Mixtard 30 provides support that helps ease the overall symptom burden of high blood sugar. This assists with maintaining functional stability and supports general well-being during symptomatic phases. A key therapeutic objective is to support the management of symptoms associated with long-term diabetes-related complications.


Therapeutic Benefit Snapshot

Quick Fact: Support for Systemic Imbalance
Conditions Relevant To Use Type 1 Diabetes, Type 2 Diabetes, Gestational Diabetes.
Symptom Focus Addresses symptoms related to systemic imbalance, including thirst and fatigue.
Therapeutic Objective Supports day-to-day comfort and assists with maintaining functional stability.

Regulatory References

  1. European Medicines Agency summary for Mixtard

Eligibility and Restrictions for Use

Who Can and Cannot Use Mixtard 30?

The population eligibility for Mixtard 30 is defined by official regulatory documents, specifying the age groups approved for use, absolute contraindications, and populations requiring intensified monitoring.

Contraindicated Populations (Prohibited Use)

Classification Population/Condition
Absolute Contraindication Patients with known hypersensitivity to human insulin or any of the medicine's excipients.
Absolute Contraindication Patients currently experiencing or suspected of having acute hypoglycaemia (low blood sugar).

Population Eligibility and Restrictions

Category Regulatory Status
Age Groups Indicated for use in adults, adolescents, and children [1.1, 2.3].
Pregnancy/Lactation No restrictions on treatment are noted for patients who are pregnant or breastfeeding [1.1].
Organ Impairment Permitted for use in patients with renal (kidney) or hepatic (liver) impairment, but requires intensified glucose monitoring [1.1, 2.8].
Elderly Patients (ge 65 years) Permitted for use, but requires intensified glucose monitoring [1.1].
Comorbidity Restriction Patients with risk factors for heart failure must be observed closely if co-treated with thiazolidinediones (TZDs) [1.1].

These classifications define who can use the drug under standard labeled conditions and highlight conditions where use is strictly prohibited or requires regulatory-mandated caution and surveillance.

What should I know about interactions with other medicines?

Mixtard 30 Interactions with other medicines and products

Mixtard 30, a human biphasic insulin, interacts with numerous substances that may either increase or decrease the patient’s insulin requirement. These interactions are categorized based on their official effect on blood glucose management, as documented in regulatory information.


Documented Effects on Insulin Requirement

Effect on Insulin Requirement Examples of Interacting Substances
Reduced (Hypoglycemia Risk) Oral antidiabetic medicines, MAOIs, ACE-inhibitors, Salicylates, Anabolic steroids, Sulfonamides
Increased (Hyperglycemia Risk) Oral contraceptives, Thiazides, Glucocorticoids, Thyroid hormones, Sympathomimetics, Growth hormone, Danazol
Variable Octreotide/Lanreotide

Pharmacodynamic and Contextual Cautions

Specific interactions require clinical caution:

  • Pharmacodynamic Masking: Beta-blockers may suppress or mask the symptoms of hypoglycemia, thereby interfering with a patient's self-recognition of low blood sugar.
  • Combination-Specific Monitoring: The combination of insulin with Thiazolidinediones (TZDs) necessitates observation for signs of cardiac failure. If cardiac symptoms worsen, the TZD must be discontinued.
  • Substance Interaction: Consumption of alcohol may unpredictably either intensify or reduce the hypoglycemic effect of the insulin.

Population-Specific Notes

Regulatory documents note that concomitant disease in the kidney or liver, as well as disorders of the adrenal, pituitary, or thyroid gland, may require a change in the Mixtard 30 dose.

Mechanism of Action

Mixtard 30's mechanism is driven by its active component, human insulin, and its unique biphasic profile that modulates key metabolic pathways influencing plasma glucose concentration.


Insulin Receptor Activation and Cellular Glucose Uptake

Mixtard 30 acts by binding to the Insulin Receptor (IR) on the surface of muscle, fat, and liver cells, initiating a molecular cascade. This signaling ultimately results in the translocation of GLUT4 transporters to the cell membrane, allowing cells to take up glucose from the bloodstream, which facilitates the reduction of circulating plasma glucose concentration.


Biphasic Kinetics and Sustained Metabolic Control

The biphasic formulation engages two distinct mechanistic domains simultaneously. It contains both a rapidly absorbed soluble component for immediate pathway modulation and a protamine-complexed component that is absorbed slowly. This mechanism provides a sustained release, which supports prolonged activity within basal metabolic pathways, mirroring the natural dual-stage release pattern.


Suppression of Hepatic Glucose Production and Anti-Catabolic Effects

Beyond enhancing cellular uptake, Mixtard 30 exerts an anti-catabolic effect by engaging pathways that inhibit glucose generation in the liver. It suppresses gluconeogenesis (new glucose formation) and glycogenolysis (glycogen breakdown), while also inhibiting the release of free fatty acids from fat tissue. This systemic modulation influences plasma glucose stability by reducing endogenous glucose input and limiting the downstream metabolic pathways that generate ketone bodies.

Dosage and Administration Information

Administration Route and Preparation

The administration of Mixtard 30 involves specific protocols for its use as a biphasic suspension. The pathway is limited to subcutaneous injection into areas such as the abdominal wall or thigh, with intravenous administration explicitly prohibited. Before injection, the preparation must be gently rolled until it is uniformly white and cloudy to ensure the suspension is fully mixed.


Dosing and Schedule Principles

Dosing is individualized for each patient, with typical daily requirements generally falling in the range of 0.3 to 1.0 International Units per kilogram (IU/kg/day). The preparation is intended for long-term maintenance therapy and requires continuous dose titration based on monitoring results. The schedule mandates administration once or twice daily, and the injection must occur 30 minutes prior to a meal or carbohydrate-containing snack to synchronize the insulin action with glucose uptake.


Administration Constraints

Procedural rules require the rotation of injection sites within the chosen region to prevent tissue changes. Furthermore, Mixtard 30 must not be utilized in insulin infusion pumps. Specific rules for use apply to certain populations: elderly patients (≥ 65 years) and those with renal or hepatic impairment require intensified glucose monitoring and individual dose adjustment.

Recent Clinical Evidence

Mixtard 30: Overview of Clinical Evidence

Mixtard 30, a biphasic formulation containing 30% soluble human insulin and 70% isophane human insulin, is indicated for the treatment of diabetes mellitus. Clinical studies involving this formulation focus primarily on its effectiveness in achieving and maintaining glycemic control in patients with both Type 1 and Type 2 diabetes.

Efficacy in Glycemic Control

Research has explored the ability of Mixtard 30 to lower glycosylated hemoglobin ( HbA1c) levels, a key measure of average blood sugar control over time. In comparative trials, Mixtard 30 has been associated with decreases in HbA1c levels, similar to those observed with other human insulin preparations. A study of 294 patients with Type 1 and Type 2 diabetes compared Mixtard 30 to a similar premixed regimen using an insulin analogue (biphasic insulin aspart) over 12 weeks and demonstrated comparable overall reductions in HbA1c.

Comparison to Other Regimens

Studies have evaluated the use of Mixtard 30 against other insulin treatments, including different ratios of premixed insulins and basal-bolus regimens. Findings suggest:

Comparison Regimen Outcome Measured Research Finding
Mixtard 50/50 HbA1c reduction Found both regimens similarly effective in lowering HbA1c.
Basal-Bolus Analogues HbA1c reduction, hypoglycemia Some studies exploring thrice-daily Mixtard 30 showed similar HbA1c reduction and comparable rates of minor hypoglycemic episodes.

Safety Profile Focus

Consistent across studies, the most commonly reported adverse event associated with Mixtard 30 is hypoglycemia (low blood glucose levels), which is a common risk with all insulin therapies. Clinical trials measure the frequency of minor and severe hypoglycemic episodes to balance efficacy against safety risks. Other injection site reactions, such as pain or swelling, are generally local and transient.

Frequently Asked Questions (FAQ)

Common questions about Mixtard 30 (FAQ)


Q: How quickly does Mixtard 30 start working after an injection?

Official product information, based on its formulation, indicates that this medicine begins to act by lowering blood sugar approximately half an hour (30 minutes) after it is injected. This fast-acting component is described as managing the immediate rise in glucose that follows a meal.


Q: How long does the effect of Mixtard 30 usually last?

Mixtard 30 is a biphasic insulin, meaning it provides both a rapid and a sustained effect. Regulatory documents report that the overall blood sugar lowering effect of this combination formulation lasts for approximately 24 hours.


Q: What are the most commonly reported side effects of Mixtard 30?

The most commonly reported adverse effect with Mixtard 30, and all insulin products, is hypoglycaemia (low blood sugar). Official labeling classifies this effect as 'Very Common,' meaning it may affect more than one in ten users. Other documented effects are categorized as less frequent, such as local reactions at the injection site.


Q: Is weight gain a typical side effect associated with Mixtard 30?

Weight gain is not explicitly listed as a stand-alone common side effect of Mixtard 30 in official regulatory documents. However, product information includes a specific caution for patients taking insulin alongside thiazolidinediones (TZDs), where a rapid increase in weight or localized swelling (oedema) is a sign to be observed for, as documented in official safety information.


Q: What is the risk of hypoglycemia (low blood sugar) with Mixtard 30?

The risk of developing hypoglycaemia (low blood sugar) while using Mixtard 30 is classified as Very Common in official documentation, meaning it may affect more than one in ten users. This risk highlights the importance of regular glucose monitoring as a standard practice for managing low blood sugar, which is the core metabolic risk of all insulin therapy.


Q: Why do some people need two types of insulin mixed together?

Mixtard 30 is a dual-acting, or biphasic, formulation combining both a fast-acting and an intermediate-acting human insulin. This is typically used to manage two separate metabolic needs: controlling the quick rise in glucose after a meal and providing sustained, background insulin activity throughout the day.


Q: What are the known contraindications listed for Mixtard 30 use?

Official regulatory documents list two absolute conditions where use is prohibited (contraindicated). These are: known hypersensitivity (allergy) to human insulin or any of the medicine's ingredients, and if acute hypoglycaemia (low blood sugar) is suspected to be starting or is occurring.


Q: What are the general expectations of Mixtard 30's role in a complete diabetes treatment plan?

Mixtard 30 is indicated for the treatment of diabetes mellitus as a long-term therapy. Due to its combination of fast and intermediate components, it is typically used once or twice daily when a patient requires both immediate post-meal coverage and sustained background insulin activity. It is clinically recognized as a foundational tool for glycemic control.


Q: Why would a doctor choose Mixtard 30 instead of a single type of insulin?

Mixtard 30 is a fixed, premixed formulation designed for dual coverage in a single injection. The combination of fast-acting and intermediate-acting insulin addresses both mealtime blood sugar spikes and overall background insulin needs simultaneously. This approach can be utilized to simplify the daily insulin regimen.


Q: What is the difference between Mixtard 30 and other premixed insulins?

Mixtard 30 is defined by its active ingredient, which is human insulin (short- and intermediate-acting components). Other premixed products may contain insulin analogues, which are chemically modified insulins. These differences in active substance can lead to variations in the specific timing of the onset and duration of effect.


Q: Is Mixtard 30 the same as Novolog Mix 70/30?

No, according to regulatory classification, these are different products. Mixtard 30 contains human insulin, while NovoLog Mix 70/30 contains insulin aspart, which is an insulin analogue. This difference in the active substance means the two medicines may vary in their pharmacological profiles.


Q: Is it normal to feel a tingling sensation after using Mixtard 30?

Official side-effect information lists tingling lips as one of the recognized symptoms that may be experienced during an episode of hypoglycaemia (low blood sugar). Because hypoglycaemia is classified as a very common side effect of insulin, this symptom is directly related to the medicine’s primary metabolic effect.


Q: What are the signs that Mixtard 30 might not be working as expected?

Signs of hyperglycaemia (high blood sugar), which may indicate the medicine is not providing the necessary effect, are listed in regulatory patient information. These signs can include increased thirst, frequent urination, drowsiness, flushed dry skin, and blurred vision.


Q: Does Mixtard 30 carry any boxed warnings from regulatory agencies?

Regulatory documents list a serious caution regarding the concomitant use of insulin with medications known as thiazolidinediones (TZDs). This combination has been associated with reports of cardiac failure in patients with pre-existing risk factors. The official caution states this requires specific observation.


Q: Can exercise impact the effectiveness or timing of Mixtard 30?

Yes, official product information states that adjustment of the dose may be necessary if a patient increases their level of physical activity or changes their usual diet. Physical activity is described as a major contextual factor that affects blood sugar levels and insulin requirements.


Q: Is there any official information on using Mixtard 30 with an insulin pump?

Official regulatory product information explicitly states: 'Do not use Mixtard 30 in insulin infusion pumps.' This is a fixed procedural constraint based on the drug's formulation as a biphasic suspension.


Q: Can Mixtard 30 be taken if a person is fasting?

The recommended schedule requires injection 30 minutes prior to a meal or carbohydrate-containing snack. Omission of a meal or eating too little food is listed in regulatory documents as a circumstance that may lead to hypoglycaemia (low blood sugar), which is noted in the context of the required pre-meal administration.


Q: Is there a maximum period of time Mixtard 30 is typically prescribed for?

Official regulatory texts describe Mixtard 30 as a treatment intended for long-term maintenance therapy for diabetes mellitus. There is no specific maximum duration of use noted in official product information, as diabetes treatment is generally ongoing.


Q: Can people with kidney problems use Mixtard 30?

Yes, regulatory documents indicate that the medicine is permitted for use in patients with renal (kidney) or hepatic (liver) impairment. However, these conditions require intensified glucose monitoring and dose adjustment on an individual basis.

How should Mixtard 30 be stored and disposed of?

How to Store and Dispose of Mixtard 30?

Strict adherence to official storage and disposal requirements is mandatory for Mixtard 30, a biphasic human insulin suspension, to maintain its efficacy.


Official Storage Conditions

Condition Requirement
Unopened (Long-Term) Store in a refrigerator between 2 C and 8 C.
In-Use (Room Temperature) Keep at room temperature, typically up to 25 C or 30 C, for a maximum of 28 days.
Prohibited Environment Do not freeze. The product must not be used if it has been frozen.
Protection Store in the original carton to protect the contents from light.

Stability and Disposal Rules

The product must be kept out of the sight and reach of children.

Before injection, the suspension must be visually inspected; it must appear uniformly white and cloudy after gentle resuspension. Once the 28-day in-use period is exceeded, the product must be discarded. Disposal of unused or expired medicine, as well as used needles, must follow local and national pharmaceutical waste regulations.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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