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humalog mix 75/25 kwikpen

Humalog Mix 75/25 Kwikpen is a combination medicine containing Insulin Lispro Protamine Recombinant and Insulin Lispro Recombinant.

Insulin Lispro Protamine Recombinant and Insulin Lispro Recombinant · by Lilly

Not yet rated· sourced from the FDA label
Rated against independent regulatory sources·Last updated June 7, 2026·How we rate
Verified againstopenFDANIH DailyMedRxClass

This is one strength of Humalog Mix 75/25 Pen

The FDA label is the same for every strength in this family, so the full page — with all 2 strengths — lives on Humalog Mix 75/25 Pen.

  • Humalog Mix 75/25 PenInsulin Lispro Protamine Recombinant 75 UNITS/ML; Insulin Lispro Recombinant 25 UNITS/ML
  • Humalog Mix 75/25 Kwikpen (this page)Insulin Lispro Protamine Recombinant 75 UNITS/ML; Insulin Lispro Recombinant 25 UNITS/ML

Key facts

Active ingredient
Insulin Lispro Protamine Recombinant and Insulin Lispro Recombinant
Form
Injectable
Strength
Insulin Lispro Protamine Recombinant 75 UNITS/ML; Insulin Lispro Recombinant 25 UNITS/ML
Type
Prescription (Rx)
Brand or generic
Brand-name
Manufacturer
Lilly
FDA application
BLA021017

What is Humalog Mix 75/25 Kwikpen?

From the FDA label:Insulin lispro is a rapid-acting insulin analog produced by recombinant DNA technology utilizing a non-pathogenic laboratory strain of Escherichia coli . Insulin lispro differs from human insulin in that the amino acid proline at position B28 is replaced by lysine and the lysine in position B29 is replaced by proline. Chemically, it is Lys(B28), Pro(B29) human insulin analog and has the empirical formula C 257 H 383 N 65 O 77 S 6 and a molecular weight of 5.808 kDa, both identical to that of human insulin. HUMALOG Mix75/25 (insulin lispro protamine and insulin lispro) injectable suspension is a mixture of 75% insulin lispro protamine, an intermediate-acting human insulin analog, and 25% insulin lispro, a rapid-acting human insulin analog. Insulin lispro protamine suspension is a suspension of crystals produced from combining insulin lispro and protamine sulfate under appropriate conditions for crystal formation. Insulin lispro has the following primary structure: HUMALOG Mix75/25 (insulin lispro protamine and insulin lispro) injectable suspension is a white and cloudy, sterile suspension for subcutaneous use. Each mL of HUMALOG Mix75/25 contains 100 units of insulin lispro; dibasic sodium phosphate (2.0 mg), glycerin (16 mg), metacresol (1.76 mg), phenol (0.715 mg), protamine sulfate (0.28 mg), zinc oxide content adjusted to provide zinc ion (0.025 mg), and Water for…

How to use

See Full Prescribing Information for important preparation and administration instructions. ( 2.1 ) Inject HUMALOG Mix75/25 subcutaneously (within 15 minutes before a meal) in abdominal wall, thigh, upper arm, or buttocks and rotate injection sites to reduce the risk of lipodystrophy and localized cutaneous amyloidosis. ( 2.1 , 2.2 ) Individualize and adjust dosage based on metabolic needs, blood glucose monitoring results and glycemic control goal. ( 2.2 ) Do not administer HUMALOG Mix75/25 intravenously or by a continuous subcutaneous insulin infusion pump. ( 2.1 ) HUMALOG Mix75/25 is typically dosed twice daily (with each dose intended to cover 2 meals or a meal and a snack). ( 2.2 ) 2.1 Important Preparation and Administration Instructions Preparation Instructions Always check insulin labels before administration [see Warnings and Precautions ( 5.4 )] . HUMALOG Mix75/25 is a suspension that must be resuspended immediately before use. Resuspension is easier when the insulin has reached room temperature. To resuspend the: vial, carefully invert the vial at least 10 times until the suspension appears uniformly white and cloudy. KwikPen, gently roll the KwikPen at least 10 times and then carefully invert the KwikPen at least 10 times until the suspension appears uniformly white and cloudy. Inspect HUMALOG Mix75/25 visually before use. Do not use if discoloration or particulate…

Side effects

The following adverse reactions are discussed elsewhere in the labeling: 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 observed with HUMALOG Mix75/25 include hypoglycemia, allergic reactions, injection site reactions, lipodystrophy, weight gain, edema, pruritus, and rash. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. Adverse Reactions from Clinical Studies or Postmarketing Reports The following adverse reactions have been identified during post-marketing use of HUMALOG Mix75/25. Because some of these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Adverse reactions associated with insulin initiation and glucose control intensification Intensification or rapid improvement in glucose control has been associated with a transitory, reversible ophthalmologic refraction disorder, worsening of diabetic retinopathy, and acute painful peripheral neuropathy. Over the long-term, improved glycemic control decreases the risk of…

Warnings

Important safety information

Never share a HUMALOG Mix75/25 KwikPen or syringe 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 blood glucose monitoring with changes to insulin dosage, co-administered glucose lowering medications, meal pattern, physical activity; in patients with renal or hepatic impairment; and in patients with 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 HUMALOG Mix75/25, monitor and treat if indicated. ( 5.5 ) Hypokalemia: May be life-threatening. Monitor potassium levels in patients at risk of 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 reductions or discontinuation if heart failure occurs. ( 5.7 ) 5.1 Never Share a HUMALOG Mix75/25 KwikPen or Syringe Between Patients HUMALOG Mix75/25 KwikPens must never be shared between patients, even if the needle is changed. Patients using HUMALOG Mix75/25 vials must 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 ( 5.3 )] 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 anti-diabetic products may be needed. 5.3 Hypoglycemia Hypoglycemia is the most common adverse reaction associated with all insulins, including HUMALOG Mix75/25. Severe hypoglycemia can cause seizures, may lead to unconsciousness, may be life-threatening, or cause death. Hypoglycemia can impair concentration ability and reaction time; this may place an individual and others at risk in situations where these abilities are important (e.g., driving or operating other machinery). Hypoglycemia can happen suddenly, and symptoms may differ in each individual and change over time in the same individual. Symptomatic awareness of hypoglycemia may be less pronounced in patients with longstanding diabetes, in patients with diabetic nerve disease, in patients using medications that block the sympathetic nervous system (e.g., beta-blockers) [see Drug Interactions ( 7 )] , or in patients who experience recurrent hypoglycemia. Risk Factors for Hypoglycemia The risk of hypoglycemia after an injection is related to the duration of action of the insulin 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 HUMALOG Mix75/25 may vary in different individuals or at different times in the same individual and depends on many conditions, including the area of injection as well as the injection site blood supply and temperature [see Clinical Pharmacology ( 12.2 )] . 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 co-administered medication [see Drug Interactions ( 7 )] . 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 HUMALOG Mix75/25 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 HUMALOG Mix75/25. If hypersensitivity reactions occur, discontinue HUMALOG Mix75/25; treat per standard of care and monitor until symptoms and signs resolve. HUMALOG Mix75/25 is contraindicated in patients who have had hypersensitivity reactions to HUMALOG Mix75/25 or any of its excipients [see Contraindications ( 4 )] . 5.6 Hypokalemia All insulins, including HUMALOG Mix75/25, 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, particularly when used in combination with insulin. Fluid retention may lead to or exacerbate heart failure. Patients treated with insulin, including HUMALOG Mix75/25, 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 Humalog Mix 75/25 Kwikpen

HUMALOG Mix75/25 is contraindicated: during episodes of hypoglycemia [see Warnings and Precautions ( 5.3 )] in patients who have had hypersensitivity reactions to HUMALOG Mix75/25 or to any of its excipients. [see Warnings and Precautions ( 5.5 )] Do not use during episodes of hypoglycemia. ( 4 ) Do not use in patients with hypersensitivity to HUMALOG Mix75/25 or any of its excipients. ( 4 )

Overdose — what happens if you take too much

Excess insulin administration may cause hypoglycemia and hypokalemia. Mild episodes of hypoglycemia usually can be treated with oral glucose. Adjustments in drug dosage, 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. Sustained carbohydrate intake and observation may be necessary because hypoglycemia may recur after apparent clinical recovery. Hypokalemia must be corrected appropriately [see Warnings and Precautions ( 5.3 , 5.6 )].

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 1 below presents clinically significant drug interactions with HUMALOG Mix75/25. Table 1: Clinically Significant Drug Interactions with HUMALOG Mix75/25 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 analog (e.g., octreotide), and sulfonamide antibiotics. Intervention: Dose adjustment and increased frequency of glucose monitoring may be required when HUMALOG Mix75/25 is co-administered with these drugs. Drugs that May Decrease the Blood Glucose Lowering Effect of HUMALOG Mix75/25 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: Dose adjustment and increased frequency of glucose monitoring may be required when HUMALOG Mix75/25 is co-administered with these drugs. Drugs that May Increase or Decrease the Blood Glucose Lowering Effect of HUMALOG Mix75/25 Drugs: Alcohol, beta-blockers, clonidine, and lithium salts. Pentamidine may cause hypoglycemia, which may sometimes be followed by hyperglycemia. Intervention: Dose adjustment and increased frequency of glucose monitoring may be required when HUMALOG Mix75/25 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 HUMALOG Mix75/25 is co-administered with these drugs. Drugs that may increase the risk of hypoglycemia: antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, pentoxifylline, pramlintide, salicylates, somatostatin analog (e.g., octreotide), and sulfonamide antibiotics. ( 7 ) Drugs that may decrease the blood glucose lowering effect: atypical antipsychotics, 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. ( 7 ) Drugs that may increase or decrease the blood glucose lowering effect: alcohol, beta-blockers, clonidine, lithium salts, and pentamidine. ( 7 ) Drugs that may blunt the signs and symptoms of hypoglycemia: beta-blockers, clonidine, guanethidine, and reserpine. ( 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

Is there a coupon or discount for Humalog Mix 75/25 Kwikpen?
pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Humalog Mix 75/25 Kwikpen. 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 Humalog Mix 75/25 Kwikpen?
Humalog Mix 75/25 Kwikpen is marketed by Lilly. You can see Lilly's full profile, rating, and other products on pharmaranks.
Is Humalog Mix 75/25 Kwikpen a brand-name or generic drug?
Humalog Mix 75/25 Kwikpen is a brand-name product with the active ingredient Insulin Lispro Protamine Recombinant and Insulin Lispro Recombinant.
Is Humalog Mix 75/25 Kwikpen available over the counter?
No. Humalog Mix 75/25 Kwikpen 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 Humalog Mix 75/25 Kwikpen come in?
Humalog Mix 75/25 Kwikpen is currently marketed as injectable, per the FDA's National Drug Code Directory.
Is Humalog Mix 75/25 Kwikpen FDA-registered?
Humalog Mix 75/25 Kwikpen is on record with the U.S. FDA under application number BLA021017. You can verify this on its official FDA label.
Is Humalog Mix 75/25 Kwikpen safe?
There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Humalog Mix 75/25 Kwikpen. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
What are the side effects of Humalog Mix 75/25 Kwikpen?
Humalog Mix 75/25 Kwikpen's side effects are taken directly from its FDA label. From the label: The following adverse reactions are discussed elsewhere in the labeling: 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 Pr… 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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