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levemir flexpen

Pharmaranks rates Levemir Flexpen 3.4/5 for recall safety — an independent score from its FDA recall history and its manufacturer's record. Levemir Flexpen (Insulin Detemir Recombinant) is a medication supplied as an injection, solution.

Insulin Detemir Recombinant · by Novo Nordisk Inc

68/100Limited · 1 source

Based on 1 source · Recall-safety score from FDA recall history — this product's own recalls and its manufacturer's record. Not an efficacy or quality rating. methodology →

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate
Verified againstopenFDANIH DailyMedRxClass

Every strength approved under this FDA application (4)

  • Levemir Flexpen (this page)Insulin Detemir Recombinant 300 UNITS/3ML (100 UNITS/ML)
  • Levemir InnoletInsulin Detemir Recombinant 300 UNITS/3ML (100 UNITS/ML)
  • Levemir PenfillInsulin Detemir Recombinant 300 UNITS/3ML (100 UNITS/ML)
  • Levemir FlextouchInsulin Detemir Recombinant 300 UNITS/3ML (100 UNITS/ML)

Key facts

Form
Injectable
Strength
Insulin Detemir Recombinant 300 UNITS/3ML (100 UNITS/ML)
Type
Prescription (Rx)
Brand or generic
Brand-name
Manufacturer
Novo Nordisk Inc
FDA application
BLA021536

What is Levemir Flexpen?

From the FDA label:Insulin detemir is a long-acting recombinant human insulin analog produced by a process that includes expression of recombinant DNA in Saccharomyces cerevisiae followed by chemical modification. Insulin detemir differs from human insulin in that the amino acid threonine in position B30 has been omitted, and a C14 fatty acid chain has been attached to the amino acid B29. Insulin detemir has a molecular formula of C 267 H 402 O 76 N 64 S 6 and a molecular weight of 5.917 kDa. It has the following structure: Figure 1: Structural Formula of Insulin Detemir LEVEMIR (insulin detemir) injection is a clear, colorless, aqueous, neutral sterile solution for subcutaneous use. Each milliliter of LEVEMIR contains 100 units insulin detemir, dibasic sodium phosphate (0.71 mg), glycerin (16 mg), metacresol (2.06 mg), phenol (1.8 mg), sodium chloride (1.17 mg), zinc (65.4 mcg), and Water for Injection, USP. Hydrochloric acid and/or sodium hydroxide may be added to adjust pH. LEVEMIR has a pH of approximately 7.4. Levemir Chemical Structure.jpg

How to use

See Full Prescribing Information for important administration instructions ( 2.1 ). • Inject subcutaneously into the thigh, upper arm, or abdomen ( 2.1 ). • Rotate injection sites to reduce risk of lipodystrophy and localized cutaneous amyloidosis ( 2.1 ). • Individualize and titrate the dose of LEVEMIR based on the patient’s metabolic needs, blood glucose monitoring results, and glycemic control goal ( 2.2 ). • Administer subcutaneously once daily or in divided doses twice daily ( 2.2 ). • See Full Prescribing Information for recommended starting dose in insulin naïve patients and patients already on insulin therapy ( 2.3 , 2.4 ). 2.1 Important Administration Instructions • Always check insulin labels before administration [see Warnings and Precautions ( 5.4 )]. • Visually inspect for particulate matter and discoloration. Only use LEVEMIR if the solution appears clear and colorless. • Inject LEVEMIR subcutaneously into the thigh, upper arm, or abdomen. • Rotate injection sites within the same region from one injection to the next to reduce the risk of lipodystrophy and localized cutaneous amyloidosis. Do not inject into areas of lipodystrophy or localized cutaneous amyloidosis [see Warnings and Precautions ( 5.2 ), Adverse Reactions ( 6 )] . • During changes to a patient’s insulin regimen, increase the frequency of blood glucose monitoring [see Warnings and Precautions ( 5.2…

Side effects

The following adverse reactions are discussed elsewhere: • Hypoglycemia [see Warnings and Precautions ( 5.3 )] • Hypoglycemia Due to Medication errors [see Warnings and Precautions ( 5.4 )] • Hypersensitivity Reactions [see Warnings and Precautions ( 5.5 )] • Hypokalemia [see Warnings and Precautions ( 5.6 )] Adverse reactions associated with LEVEMIR include hypoglycemia, allergic reactions, injection site reactions, lipodystrophy, rash and pruritus ( 6 ). To report SUSPECTED ADVERSE REACTIONS, contact Novo Nordisk Inc. at 1-800-727-6500 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying designs, the adverse reaction rates reported in one clinical trial may not be easily compared to those rates reported in another clinical trial, and may not reflect the rates actually observed in clinical practice. The frequencies of adverse reactions (excluding hypoglycemia) reported during LEVEMIR clinical trials in patients with type 1 diabetes mellitus and type 2 diabetes mellitus are listed in Tables 1-4 below. See Tables 5 and 6 for the hypoglycemia findings. In two pooled trials, adults with type 1 diabetes were exposed to individualized doses of LEVEMIR (n=767) or NPH (n=388). The mean duration of exposure to LEVEMIR was 153 days, and the total exposure to LEVEMIR was 321 patient-years. The most…

Warnings

Important safety information

Never Share a LEVEMIR FlexPen, insulin syringe, or needle between patients, even if the needle is changed ( 5.1 ). • Hyperglycemia or hypoglycemia with changes in insulin regimen: Make changes to a patient’s insulin regimen (e.g., insulin strength, manufacturer, type, injection site or method of administration) under close medical supervision with increased frequency of blood glucose monitoring ( 5.2 ). • Hypoglycemia: May be life-threatening. Increase frequency of glucose monitoring with changes to: insulin dosage, concomitant drugs, meal pattern, physical activity; and in patients with renal impairment or hepatic impairment or hypoglycemia unawareness ( 5.3 ). • Hypoglycemia due to medication errors: Accidental mix-ups between insulin products can occur. Instruct patients to check insulin labels before injection ( 5.4 ). • Hypersensitivity reactions: Severe, life-threatening, generalized allergy, including anaphylaxis, can occur. Discontinue LEVEMIR, monitor and treat if indicated ( 5.5 ). • Hypokalemia: May be life-threatening. Monitor potassium levels in patients at risk for hypokalemia and treat if indicated ( 5.6 ). • Fluid retention and heart failure with concomitant use of thiazolidinediones (TZDs): Observe for signs and symptoms of heart failure; consider dosage reduction or discontinuation if heart failure occurs ( 5.7 ). 5.1 Never Share a LEVEMIR FlexPen, Needle, or Insulin Syringe between Patients LEVEMIR FlexPen prefilled pens must never be shared between patients, even if the needle is changed. Patients using LEVEMIR vials should never share needles or syringes with another person. Sharing poses a risk for transmission of blood-borne pathogens. 5.2 Hyperglycemia or Hypoglycemia with Changes in Insulin Regimen Changes in an insulin regimen (e.g., insulin strength, manufacturer, type, injection site or method of administration) may affect glycemic control and predispose to hypoglycemia [see Warnings and Precautions ( 5.4 )] or hyperglycemia. Repeated insulin injections into areas of lipodystrophy or localized cutaneous amyloidosis have been reported to result in hyperglycemia; and a sudden change in the injection site (to an unaffected area) has been reported to result in hypoglycemia [see Adverse Reactions ( 6 )]. Make any changes to a patient’s insulin regimen under close medical supervision with increased frequency of blood glucose monitoring. Advise patients who have repeatedly injected into areas of lipodystrophy or localized cutaneous amyloidosis to change the injection site to unaffected areas and closely monitor for hypoglycemia. For patients with type 2 diabetes, dosage adjustments of concomitant antidiabetic products may be needed [see Dosage and Administration ( 2.4 )]. 5.3 Hypoglycemia Hypoglycemia is the most common adverse reaction of insulin, including LEVEMIR [see Adverse Reactions ( 6.1 )]. Severe hypoglycemia can cause seizures, may be life-threatening or cause death. Hypoglycemia can impair concentration ability and reaction time; this may place the patient and others at risk in situations where these abilities are important (e.g., driving or operating other machinery). LEVEMIR, or any insulin, should not be used during episodes of hypoglycemia [see Contraindications ( 4 )]. Hypoglycemia can happen suddenly and symptoms may differ in each patient and change over time in the same patient. Symptomatic awareness of hypoglycemia may be less pronounced in patients with longstanding diabetes, in patients with diabetic neuropathy, using drugs that block the sympathetic nervous system (e.g., beta-blockers) [see Drug Interactions ( 7 )], or who experience recurrent hypoglycemia. Risk Factors for Hypoglycemia The risk of hypoglycemia generally increases with intensity of glycemic control. The risk of hypoglycemia after an injection is related to the duration of action of the insulin [see Clinical Pharmacology ( 12.2 )] and, in general, is highest when the glucose lowering effect of the insulin is maximal. As with all insulins, the glucose lowering effect time course of LEVEMIR may vary among different patients or at different times in the same patient and depends on many conditions, including the area of injection as well as the injection site blood supply and temperature. Other factors which may increase the risk of hypoglycemia include changes in meal pattern (e.g., macronutrient content or timing of meals), changes in level of physical activity, or changes to concomitant drugs [see Drug Interactions ( 7 )]. When a GLP-1 receptor agonist is used in combination with LEVEMIR, the LEVEMIR dose may need to be lowered or more conservatively titrated to minimize the risk of hypoglycemia [see Adverse Reactions ( 6.1 )] . Patients with renal or hepatic impairment may be at higher risk of hypoglycemia [see Use in Specific Populations ( 8.6 , 8.7 )]. Risk Mitigation Strategies for Hypoglycemia Patients and caregivers must be educated to recognize and manage hypoglycemia. Self-monitoring of blood glucose plays an essential role in the prevention and management of hypoglycemia. In patients at higher risk for hypoglycemia and patients who have reduced symptomatic awareness of hypoglycemia, increased frequency of blood glucose monitoring is recommended. 5.4 Hypoglycemia Due to Medication Errors Accidental mix-ups between insulin products have been reported. To avoid medication errors between LEVEMIR and other insulins, instruct patients to always check the insulin label before each injection. 5.5 Hypersensitivity Reactions Severe, life-threatening, generalized allergy, including anaphylaxis, can occur with insulins, including LEVEMIR [see Adverse Reactions ( 6.1 )] . If hypersensitivity reactions occur, discontinue LEVEMIR; treat per standard of care and monitor until symptoms and signs resolve. LEVEMIR is contraindicated in patients who have had hypersensitivity reactions to insulin detemir or any of the excipients . 5.6 Hypokalemia All insulins, including LEVEMIR, cause a shift in potassium from the extracellular to intracellular space, possibly leading to hypokalemia. Untreated hypokalemia may cause respiratory paralysis, ventricular arrhythmia, and death. Monitor potassium levels in patients at risk for hypokalemia if indicated (e.g., patients using potassium-lowering medications, patients taking medications sensitive to serum potassium concentrations). 5.7 Fluid Retention and Heart Failure with Concomitant Use of PPAR-gamma Agonists Thiazolidinediones (TZDs), which are peroxisome proliferator-activated receptor (PPAR)-gamma agonists, can cause dose-related fluid retention, when used in combination with insulin. Fluid retention may lead to or exacerbate heart failure. Patients treated with insulin, including LEVEMIR, and a PPAR-gamma agonist should be observed for signs and symptoms of heart failure. If heart failure develops, it should be managed according to current standards of care, and discontinuation or dose reduction of the PPAR-gamma agonist must be considered.

Who should not take Levemir Flexpen

LEVEMIR is contraindicated: • During episodes of hypoglycemia [see Warnings and Precautions (5.3)] • In patients with hypersensitivity to insulin detemir or any of the excipients in LEVEMIR. Reactions have included anaphylaxis [ see Warnings and Precautions (5.5) and Adverse Reactions (6.1) ] . • During episodes of hypoglycemia ( 4 ) • Hypersensitivity to insulin detemir or any of the excipients in LEVEMIR ( 4 )

Overdose — what happens if you take too much

An excess of insulin relative to food intake, energy expenditure, or both may lead to severe and sometimes prolonged and life-threatening hypoglycemia and hypokalemia [see Warnings and Precautions ( 5.3 , 5.6 )] . Mild episodes of hypoglycemia usually can be treated with oral glucose. Lowering the insulin dosage, and adjustments in meal patterns, or exercise may be needed. More severe episodes with coma, seizure, or neurologic impairment may be treated with a glucagon product for emergency use or concentrated intravenous glucose. After apparent clinical recovery from hypoglycemia, continued observation and additional carbohydrate intake may be necessary to avoid recurrence of hypoglycemia. Hypokalemia must be corrected appropriately.

U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.

Interactions

Table 6 includes clinically significant drug interactions with LEVEMIR. Table 6: Clinically Significant Drug Interactions with LEVEMIR Drugs That May Increase the Risk of Hypoglycemia Drugs: Antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, pentoxifylline, pramlintide, salicylates, somatostatin analogs (e.g., octreotide), and sulfonamide antibiotics, GLP-1 receptor agonists, DPP-4 inhibitors, SGLT-2 inhibitors. Intervention: Dosage reductions and increased frequency of glucose monitoring may be required when LEVEMIR is co-administered with these drugs. Drugs That May Decrease the Blood Glucose Lowering Effect of LEVEMIR Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol, epinephrine, terbutaline), and thyroid hormones. Intervention: Dosage increases and increased frequency of glucose monitoring may be required when LEVEMIR is co-administered with these drugs. Drugs That May Increase or Decrease the Blood Glucose Lowering Effect of LEVEMIR Drugs: Alcohol, beta-blockers, clonidine, and lithium salts. Pentamidine may cause hypoglycemia, which may sometimes be followed by hyperglycemia. Intervention: Dosage adjustment and increased frequency of glucose monitoring may be required when LEVEMIR is co-administered with these drugs. Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine, and reserpine Intervention: Increased frequency of glucose monitoring may be required when LEVEMIR is co-administered with these drugs. • Drugs that Affect Glucose Metabolism: Adjustment of insulin dosage may be needed. ( 7 ) • Antiadrenergic Drugs (e.g., beta-blockers, clonidine, guanethidine, and reserpine): Signs and symptoms of hypoglycemia may be reduced or absent. ( 5.3 , 7 )

Dosage forms

Injectable

The forms currently marketed in the U.S., per the FDA National Drug Code Directory.

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Frequently asked questions

How is Levemir Flexpen rated?
pharmaranks gives Levemir Flexpen a composite score of 3.4 out of 5, currently based on 1 weighted source (FDA regulatory recall-safety data weighted highest). See our methodology at /how-we-rate.
Is there a coupon or discount for Levemir Flexpen?
pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Levemir Flexpen. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
Who makes Levemir Flexpen?
Levemir Flexpen is marketed by Novo Nordisk Inc. You can see Novo Nordisk Inc's full profile, rating, and other products on pharmaranks.
Is Levemir Flexpen a brand-name or generic drug?
Levemir Flexpen is a brand-name product with the active ingredient Insulin Detemir Recombinant.
Is Levemir Flexpen available over the counter?
No. Levemir Flexpen is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
What forms does Levemir Flexpen come in?
Levemir Flexpen is currently marketed as injectable, per the FDA's National Drug Code Directory.
Is Levemir Flexpen FDA-registered?
Levemir Flexpen is on record with the U.S. FDA under application number BLA021536. You can verify this on its official FDA label.
Has Levemir Flexpen been recalled by the FDA?
Yes. Levemir Flexpen has 1 recorded FDA recall event in the openFDA enforcement database. A recall removes specific lots from the market — usually for manufacturing, contamination, potency, or labeling issues — and does not mean the drug is unsafe to take; your specific lot was almost certainly never affected. This recall history is factored into its safety score above. Always check the FDA recall database or your pharmacist for current alerts.
Is Levemir Flexpen safe?
There's no single safe-or-not verdict. pharmaranks gives Levemir Flexpen a recall-safety score of 68/100, based on its FDA recall history (1 recorded recall event) — not an efficacy or side-effect rating. Review its FDA-label side effects and warnings before use, and always consult a licensed professional.
What are the side effects of Levemir Flexpen?
Levemir Flexpen's side effects are taken directly from its FDA label. From the label: The following adverse reactions are discussed elsewhere: • Hypoglycemia [see Warnings and Precautions ( 5.3 )] • Hypoglycemia Due to Medication errors [see Warnings and Precautions ( 5.4 )] • Hypersensitivity Reactions [see Warnings and Precautions ( 5.5 )] • Hypokalemia [see Warnings and Precaution… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.

Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.

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68/100