Toujeo is a type of long-acting insulin analog (similar to Lantus and Tresiba), which means it is designed to mimic the action of naturally produced insulin, but with modifications to its properties for prolonged effects.

Toujeo’s mechanism of action involves slow and consistent release of insulin into the bloodstream over an extended period. This sustained release allows for stable blood sugar control, reducing the risk of both high and low blood sugar levels.

Compared to short-acting insulin, long-acting insulins like Toujeo offer several advantages. They provide a basal insulin level, similar to the background insulin produced by the pancreas, which helps maintain a stable glucose level between meals and overnight. The stable release of insulin from Toujeo reduces the likelihood of hypoglycemia, or low blood sugar, which can be a concern with certain short-acting insulins. Toujeo allows for flexible dosing schedules, providing patients with options to tailor their insulin therapy according to their individual needs.

Toujeo vs. Toujeo Max

Toujeo and Toujeo Max are long-acting insulin formulations produced by the pharmaceutical company Sanofi. They are specifically designed for patients with type 1 and type 2 diabetes to provide steady and consistent glucose control over an extended period. These insulins belong to the class of drugs known as insulin glargine.

Both Toujeo and Toujeo Max share the same active ingredient, insulin glargine, which works by mimicking the natural insulin produced by the pancreas. However, there are some noteworthy differences between these two formulations:

  1. Insulin Concentration: One of the primary distinctions between the two is the insulin concentration. Toujeo contains 300 units/mL, while Toujeo Max contains a higher concentration of 600 units/mL.
  2. Dosage Strengths: Due to the difference in insulin concentration, the dosage strengths of Toujeo and Toujeo Max may vary, allowing for more flexibility in insulin adjustments.
  3. Duration of Action: Toujeo and Toujeo Max also differ in their duration of action. Toujeo Max may provide an extended period of insulin activity compared to standard Toujeo.
  4. Price: As a newer and more concentrated formulation, Toujeo Max may be priced differently from Toujeo, and patients should consider their budget and insurance coverage.

When comparing the efficacy of Toujeo and Toujeo Max, several factors come into play, including the patient’s individual response to insulin therapy, lifestyle, and diet. In some cases, Toujeo Max may offer more predictable and stable blood sugar control, making it a suitable option for certain individuals.

The dosage of these insulins should be determined by a healthcare professional based on the patient’s medical history, glucose levels, and other relevant factors. Starting with a lower dose and gradually titrating it upwards may help find the optimal dosage for the patient.

Warnings and Precautions

While Toujeo is beneficial for controlling blood sugar levels, it’s crucial to be aware of certain warnings and precautions associated with its use.

Consultation with Healthcare Provider

Always consult your healthcare provider or endocrinologist before starting Toujeo. They will evaluate your medical history and assess whether it’s the appropriate choice for your diabetes management.

Hypoglycemia Risk

One of the primary concerns with insulin therapy, including Toujeo, is the risk of hypoglycemia or low blood sugar levels. Hypoglycemia can occur if the dose of insulin is too high, or if a person skips a meal or engages in strenuous physical activity without adjusting the insulin dosage. Symptoms of hypoglycemia include shakiness, dizziness, sweating, confusion, and, in severe cases, loss of consciousness. It’s essential for Toujeo users to monitor their blood sugar levels regularly and be prepared to treat hypoglycemia promptly with a fast-acting source of glucose, such as fruit juice or glucose tablets.

Hyperglycemia Risk

On the other hand, Toujeo users should also be cautious about the risk of hyperglycemia or high blood sugar levels. Hyperglycemia can occur due to insufficient insulin dosage, illness, stress, or certain medications. High blood sugar levels can lead to symptoms like excessive thirst, frequent urination, fatigue, and blurred vision. If left untreated, hyperglycemia can lead to a serious condition called diabetic ketoacidosis (DKA). Toujeo users should work closely with their healthcare providers to adjust their insulin dosage as needed and manage their blood sugar levels effectively.

Injection Site Reactions

It’s common for individuals using insulin to experience injection site reactions, such as redness, swelling, or itching at the injection site. These reactions are usually mild and resolve on their own. However, if the reactions persist or worsen, individuals should consult their healthcare provider. Proper injection techniques, such as rotating injection sites, can help minimize these reactions.

Allergic Reactions

In some rare cases, individuals may develop allergic reactions to Toujeo or its components. Signs of an allergic reaction include rash, itching, swelling, severe dizziness, and difficulty breathing. If any of these symptoms occur after using Toujeo, immediate medical attention should be sought.

Inform your healthcare provider about any known allergies, especially to insulin or any of its components. Allergic reactions can be severe and require immediate medical attention.

Liver and Kidney Impairment

Individuals with liver or kidney impairment may require special considerations when using Toujeo. The liver and kidneys play a crucial role in insulin metabolism, and their impaired function can affect how the body processes Toujeo. Healthcare providers can help determine the appropriate insulin dosage for individuals with liver or kidney issues.

Side Effects

While it is an effective treatment for controlling blood sugar levels, like any medication, it may cause side effects in some individuals.

Common Side Effects

While Toujeo is generally well-tolerated, some individuals may experience common side effects. These include:


Hypoglycemia, or low blood sugar, is the most prevalent side effect of Toujeo. It occurs when the insulin dosage leads to a significant drop in blood glucose levels. Common symptoms include shakiness, sweating, confusion, rapid heartbeat, and irritability. If left untreated, severe hypoglycemia can lead to loss of consciousness and even be life-threatening.

Injection Site Reactions

Some individuals may experience redness, swelling, or itching at the injection site after administering Toujeo. These localized reactions are generally mild and should subside on their own. Proper rotation of injection sites can help minimize discomfort.

Weight Gain

Weight gain is another possible side effect of Toujeo use. Insulin can affect how the body processes and stores fat, leading to gradual weight gain in some individuals. Adopting a balanced diet and engaging in regular physical activity can help manage this side effect.

Allergic Reactions

In rare cases, individuals may experience allergic reactions to Toujeo. Symptoms may include skin rashes, itching, hives, or difficulty breathing. If you notice any signs of an allergic reaction, seek medical attention immediately.

Headache and Dizziness

Some people might experience mild headaches or dizziness when they start using Toujeo. These symptoms usually occur as the body adjusts to the medication and should improve over time. If the headaches persist or become severe, consult your healthcare provider.

Rare Side Effects


In contrast to hypoglycemia, hyperglycemia refers to high blood sugar levels. This condition may occur if the Toujeo dosage is insufficient or if there are variations in insulin sensitivity. Symptoms include frequent urination, increased thirst, and fatigue.


Toujeo use can lead to low potassium levels in the blood, a condition known as hypokalemia. It may cause muscle weakness, irregular heart rhythms, and other complications. Monitoring potassium levels through regular blood tests is essential for individuals at risk.

Vision Changes

Some individuals using Toujeo may notice changes in their vision. These changes are usually mild and transient but should not be ignored. If vision problems persist or worsen, consult your eye specialist.

Skin Rash

A rare side effect of Toujeo is the development of skin rashes or hives. These reactions may indicate an allergy to the medication and require immediate medical attention.

Nausea and Vomiting

Toujeo use can sometimes lead to mild gastrointestinal disturbances, such as nausea and vomiting. These symptoms should be temporary and should resolve on their own. If they persist or become severe, consult your healthcare provider.

Severe Side Effects

Severe Hypoglycemia

While hypoglycemia is a common side effect, severe cases can be dangerous. Severe hypoglycemia may cause loss of consciousness, seizures, or coma. It requires immediate medical attention and should be treated with glucose or glucagon injection.


Although rare, some individuals may experience a severe allergic reaction called anaphylaxis. This life-threatening condition requires immediate emergency medical treatment. Symptoms may include difficulty breathing, swelling of the face or throat, and a sudden drop in blood pressure.

Diabetic Ketoacidosis (DKA)

In rare cases, Toujeo use can lead to diabetic ketoacidosis (DKA), a serious complication of diabetes. DKA occurs when the body breaks down fat for energy instead of glucose, leading to a buildup of acidic ketones in the blood. Symptoms include excessive thirst, frequent urination, nausea, and confusion.


Pancreatitis is the inflammation of the pancreas and is a rare but severe side effect of Toujeo. Symptoms include severe abdominal pain, nausea, and vomiting. If you experience these symptoms, seek immediate medical attention.

Heart Problems

In some cases, Toujeo may lead to heart-related issues such as palpitations or irregular heartbeats. Individuals with a history of heart problems should closely monitor their symptoms while using this medication.

Managing Side Effects

Knowing how to manage side effects is essential for individuals using Toujeo. Here are some tips:

  • When to seek medical help: If any side effects persist, worsen, or become concerning, it is crucial to seek immediate medical attention.
  • Tips for preventing hypoglycemia: Patients can minimize the risk of hypoglycemia by monitoring their blood sugar levels regularly, adhering to the prescribed dosage, and having regular meals and snacks.
  • Coping with injection site reactions: To reduce injection site reactions, users can ensure they rotate injection sites and follow proper injection techniques.
  • Lifestyle changes for minimizing side effects: Maintaining a healthy lifestyle with a balanced diet, regular exercise, and adequate rest can contribute to better tolerance of Toujeo.


While Toujeo is effective in controlling diabetes, it’s essential to be aware of potential interactions with other medications, herbs, and food.

Drug Interactions

Drug interactions occur when two or more substances, such as medications, interact with one another, leading to changes in their effects on the body. These interactions can enhance or reduce the effectiveness of one or both drugs or cause unexpected side effects.

Several medications have the potential to interact with Toujeo, affecting insulin absorption, utilization, or metabolism. Some common examples include:

  • Beta-blockers: They can mask the symptoms of low blood sugar (hypoglycemia) and may impair glucose recovery.
  • Corticosteroids: These can increase blood sugar levels, leading to insulin resistance.
  • Certain Antidepressants: Some antidepressants may influence blood sugar levels and require adjustments in insulin dosing. An example of a antidepressant is Wellbutrin.
  • Interactions with Oral Antidiabetic Drugs: Toujeo may interact with oral antidiabetic medications, potentially causing hypoglycemia (low blood sugar) or hyperglycemia (high blood sugar). It is crucial to monitor glucose levels regularly and adjust drug dosages accordingly.
  • Anticoagulants (Blood Thinners): Combining Toujeo with anticoagulant medications can affect blood clotting. Close monitoring and dose adjustments might be necessary to prevent bleeding complications.
  • Thyroid Hormones: Thyroid medications can alter glucose metabolism, necessitating careful glucose monitoring while taking Toujeo.
  • Diuretics: Diuretics may affect blood sugar levels, and individuals using Toujeo should be monitored closely for any changes.
  • ACE Inhibitors and ARBs: These medications, used for hypertension, may decrease the hypoglycemic effects of Toujeo, requiring adjustments in insulin dosages. An example of an ARB is Entresto.
  • MAOIs and SSRIs: Certain antidepressants can interfere with glucose regulation, requiring extra vigilance in diabetic patients on Toujeo.

Potential Effects of Drug Interactions

Drug interactions with Toujeo can result in either hypo- or hyperglycemia, both of which are dangerous for diabetes patients. Hypoglycemia can cause dizziness, confusion, and even loss of consciousness, while hyperglycemia may lead to diabetic ketoacidosis (DKA) in severe cases. It’s crucial for healthcare providers to be aware of all medications a patient is taking to avoid adverse effects.

Herbal Interactions

Many individuals with diabetes turn to herbal supplements seeking alternative ways to manage their condition. While some herbs may offer benefits, others can interfere with medications like Toujeo and alter blood sugar levels.

Certain herbs have been associated with potential interactions with Toujeo, including:

  • Ginseng: Ginseng may lower blood sugar levels, potentially enhancing the effects of Toujeo. Close monitoring is necessary to avoid hypoglycemia.
  • Aloe Vera: Aloe vera may also reduce blood sugar levels and should be used cautiously with Toujeo.
  • Cinnamon: Cinnamon might affect insulin sensitivity, so combining it with Toujeo requires careful observation.
  • Fenugreek: Fenugreek may lower blood sugar levels, possibly leading to hypoglycemia when used with Toujeo.
  • Garlic: Garlic supplements may affect insulin sensitivity and require careful monitoring.

Risks and Consequences of Herbal Interactions

Herbal interactions with Toujeo can be unpredictable, making it crucial for diabetes patients to consult with their healthcare providers before incorporating herbal supplements into their treatment plan. Mismanagement of herbal interactions can lead to serious health complications and compromise diabetes management.

Food Interactions

Diet plays a crucial role in diabetes management. A well-balanced diet can help stabilize blood sugar levels, reducing the need for excessive insulin doses. Some foods can affect insulin absorption and metabolism, potentially interacting with Toujeo. To manage food interactions with Toujeo effectively, individuals with diabetes should adopt a consistent and balanced diet. Controlling portion sizes and avoiding foods with high glycemic indexes can contribute to better blood sugar regulation.Foods high in simple carbohydrates and sugars may cause rapid spikes in blood sugar levels. Some foods/drinks to take note of are:

  • Alcohol: Alcohol consumption can cause fluctuations in blood sugar levels. Diabetics using Toujeo should drink alcohol in moderation and monitor their blood sugar closely.
  • Grapefruit: Grapefruit can interfere with drug metabolism, potentially affecting insulin levels. It’s best to avoid consuming large quantities of grapefruit while on Toujeo.
  • High-Glycemic Foods: Foods with a high glycemic index can cause rapid spikes in blood sugar levels. Balancing meals with Toujeo dosages is essential to manage blood sugar effectively.
  • Caffeine: Caffeine may influence insulin sensitivity, so individuals using Toujeo should monitor their response to caffeine intake.
  • Artificial Sweeteners: Some artificial sweeteners may impact blood sugar levels, requiring careful consideration when using Toujeo.


When a woman with diabetes becomes pregnant, the management of her condition becomes even more critical. High blood sugar levels during pregnancy can pose risks to both the mother and the developing baby. However, abruptly discontinuing diabetes medications without proper medical guidance can also have adverse effects.

Studies investigating the effects of Toujeo during pregnancy are limited. Due to ethical considerations, clinical trials involving pregnant women are challenging to conduct. Therefore, most of the information available is based on animal studies and data from pregnant women inadvertently exposed to the medication.

The impact of Toujeo on fetal health is a subject of concern for expecting mothers. Uncontrolled diabetes during pregnancy can lead to an increased risk of birth defects, stillbirth, and macrosomia (large birth weight). On the other hand, maintaining stable blood sugar levels with appropriate insulin therapy can reduce these risks.

Pregnancy and diabetes management require careful consideration and planning. While using Toujeo during pregnancy might be safe for some individuals, it is essential to consult healthcare professionals to determine the best course of action. Properly managing blood sugar levels during pregnancy is crucial for ensuring a healthy outcome for both the mother and the baby.


Proper storage is vital for the effectiveness of Toujeo. Incorrect storage conditions can lead to a reduction in potency, causing fluctuations in blood sugar levels and potentially leading to ineffective diabetes management. The following are some quick tips on how to store you Toujeo pens.

  • Temperature Recommendations: Toujeo should be stored at room temperature (between 59°F and 86°F or 15°C and 30°C). Extreme temperatures, both hot and cold, can affect its potency.
  • Avoiding Direct Sunlight: Exposure to direct sunlight can damage insulin. Always store Toujeo away from windows or any place where it might be exposed to sunlight for an extended period.
  • Refrigeration Guidelines: Unopened Toujeo pens can be refrigerated to extend their shelf life. However, never freeze insulin, as it can lose its effectiveness.
  • Freezing Insulin: Freezing insulin can cause it to denature and lose its effectiveness. Never store insulin in the freezer, and if it accidentally freezes, do not use it.
  • Rotation and Labeling: Practice the “first in, first out” rule with your insulin supply. Use older pens before opening new ones to ensure none go past their expiration dates. Also, label your insulin to keep track of its age.


Improper disposal of medications, including Toujeo, can pose serious risks to the environment and public health. Medications that end up in landfills or water systems can contaminate soil, water sources, and harm wildlife. Additionally, keeping unused or expired medications at home may lead to accidental ingestion or misuse.

There are several safe and environmentally-friendly methods for disposing of Toujeo:

  • Drug Take-Back Programs: Many communities offer drug take-back programs where you can return unused medications to authorized collection sites. This ensures that medications, including Toujeo, are disposed of properly by professionals.
  • Mail-Back Programs: Some pharmaceutical companies provide mail-back programs for the safe disposal of medications. You can contact the manufacturer of Toujeo to inquire if they offer such a service.
  • Disposal in Household Trash: If drug take-back or mail-back options are not available, you can dispose of Toujeo in your household trash. However, take precautions to prevent accidental ingestion by others. Place the medication in a sealed bag or container before throwing it away.
  • Avoid Flushing Medications: Flushing medications down the toilet should be avoided unless specifically instructed by the FDA, as it can contaminate water sources.

IMPORTANT NOTE: The information provided here is for educational purposes only and is not intended to serve as medical advice, diagnosis, or treatment recommendations. It should not be taken as an endorsement of any specific medication or treatment. Individual health conditions and responses to treatment can vary greatly; therefore, this information should not be seen as a guarantee of safety, suitability, or effectiveness for any particular individual. Always consult with a healthcare professional for personalized medical advice and before making any decisions regarding your health or treatment plans.

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