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Mounjaro Vs Saxenda (Tirzepatide Vs Liraglutide)

Saxenda Vs Mounjaro

Saxenda vs Mounjaro Liraglutide vs Tirzepatide

Mounjaro Vs Saxenda is a basic comparison of the two highly potent diabetes and weight loss drugs.

Mounjaro is a novel drug and innovation in the field of Diabetes Mellitus. It is FDA licensed drug containing dual GIP (glucose-dependent insulinotropic peptide) as well as GLP-1 analog (Glucagon-like peptide), known as Tirzepatide.

It was seen that GIP alone does not have a significant benefit on glycemic control. However, when used in combination with GLP-1 analog, a marvelous synergistic effect was seen and much better glycemic control was observed.

Hence the name ‘Twincretin’ was used for this combination. Twincretin, as the name suggests, is a combination of two incretins, GLP-1 and GIP.

Whereas Saxenda contains Liraglutide, a GLP-1 analog. It has been approved by the FDA primarily for the treatment of obesity, weight loss, and dyslipidemia.

Saxenda is basically a high-dose Liraglutide while Victoza is a low-dose Liraglutide. Victoza is approved for the treatment of Diabetes only.

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Mounjaro Vs Saxenda

Saxenda and Mounjaro are two potent diabetes and weight loss drugs. These drugs have not been compared in a head-to-head comparative trial.

Following are some of the similarities and differences between the two drugs:

Saxenda

Mounjaro

Trade Name:

  • SAXENDA
Trade name:

  • MOUNJARO
Manufacturer:

  • NovoNordisk
Manufacturer:

  • Eli Lilly
Uses:

To lower body weight if BMI is more than 30 or more than 27 if associated with at least one weight-related risk factor such as:

  • diabetes,
  • hypertension,
  • deranged lipid profile or
  • Ischemic heart disease
Uses:

It is used in controlling type 2 diabetes mellitus in conjunction with diet and exercise.

Mounjaro approval as a weight-loss drug is currently pending.

Ingredient:

  • Liraglutide
Ingredient:

  • Tirzepatide
Indication:

It is indicated for the treatment of obesity in patients with or without diabetes.

It is indicated if the BMI is above 30 or more than 27 with at least one weight-associated medical condition.

Indication:

It has been indicated for the control of diabetes with or without other anti-diabetic agents along with dietary control and lifestyle modifications.

Currently, it is not approved as a weight loss drug.

Frequency of administration:

  • Once a day

It is available in injection form, at 6 mg/mL, and delivers the following doses:

  • 0.6 mg,
  • 1.2 mg,
  • 1.8 mg,
  • 2.4 mg or
  • 3 mg.
Frequency of administration:

  • Once a week.

It is available as a single-dose pen containing the following doses:

  • 2.5 mg/0.5 mL,
  • 5 mg/0.5 mL,
  • 7.5 mg/0.5 mL,
  • 10 mg/0.5 mL,
  • 12.5 mg/0.5 mL, or
  • 15 mg/0.5 mL
Injection method:

  • subcutaneous
Injection method:

  • subcutaneous

Saxenda is administered as a subcutaneous injection daily while Mounjaro is administered once a week.

The dosing schedule of Saxenda is as follows:

  • Week 1:
    • 0.6 mg once daily
  • Week 2:
    • 1.2 mg once daily
  • Week 3:
    • 1.8 mg once daily
  • Week 4:
    • 2.4 mg once daily
  • Week 5:
    • 3 mg once daily

The dosing schedule of Mounjaro is as follows:

  • 1 – 4 weeks:
    • 2.5 mg once weekly
  • 5 – 8 weeks:
    • 5 mg once weekly
  • 9 – 12 weeks:
    • 7.5 mg once weekly
  • 13 – 16 weeks:
    • 10 mg once weekly
  • 17 – 20 weeks:
    • 12.5 mg once weekly
  • 21 – 24 weeks:
    • 15 mg once weekly

The maximum dose of Saxenda is 3 mg once daily while the maximum dose of Mounjaro is 15 mg once a week.

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Efficacy of Mounjaro Vs Saxenda for Diabetes and Weight Loss:

The current FDA approval of Saxenda is primarily for weight loss while that of Mounjaro is for the treatment of Type 2 Diabetes Mellitus.

The A1C reduction and Weight loss effects of Saxenda Vs Mounjaro are summarized in the table below:

Mounjaro Vs Saxenda: Effect on A1C and Weight

Efficacy

Saxenda

Mounjaro

Hba1C reduction

Saxenda is not approved for diabetes.

However, Liraglutide in a dose of 1.8 mg daily lowered the A1C by 1.1%.

At 40 weeks Mounjaro has shown a 2% reduction in HBA1c as compared to the placebo.

The A1C lowering effect at different doses is:

  • 5 mg: 2.01
  • 10 mg: 2.24
  • 15 mg: 2.3%

Weight loss

Saxenda reduces body weight by 7 kg.

The percentage weight loss with Saxenda is estimated to be around 8 – 11%

Mounjaro is associated with about 21% weight loss at maximum doses.

Its weight loss effect at different doses is:

  • 5 mg:7.6 kg
  • 10 mg:9.3 kg
  • 15 mg: 11.2 kg

Mounjaro (Tirzepatide) is more effective in lowering HbA1C. It’s almost twice as effective as Saxenda (Liraglutide).

Similarly, Mounjaro is associated with greater weight loss compared to Saxenda. Although Mounjaro’s FDA approval as a weight loss drug is still pending, it is twice as effective in reducing body weight compared to Saxenda.

Mounjaro (Tirzepatide) is also more effective than Ozempic and Wegovy as a weight loss drug (21% weight loss vs 16% with Ozempic and Wegovy).

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Safety of Mounjaro Vs Saxenda:

Both Saxenda and Mounjaro are incretins, GLP-1 analogs. However, Mounjaro is a “Twincretin”. It is a dual GLP-1 and GIP analog.

The side effects of both Mounjaro and Saxenda are comparable:

Mounjaro Vs Saxenda: Side effects

Saxenda

Mounjaro

Common side effects:

  • Nausea, vomiting, and epigastric discomfort
  • Diarrhea
  • Constipation
  • Tachycardia
  • Lethargy
  • Headaches
Common side effects:

  • Nausea and vomiting
  • Diarrhea
  • Constipation
  • Weakness
  • Headaches
  • Anorexia
  • Palpitations and tachycardia
Serious side effects:

  • Jaundice (yellowing of eyes and skin)
  • Refractory nausea and vomiting
  • Ankle swelling
  • Low blood sugars especially if used with sulfonylureas
  • Extreme lethargy, confusion, and severe malaise
  • Pain during micturition (passing urine)
  • Thyroid Cancer
  • Pancreatitis
Serious side effects:

  • Pancreatitis
  • Thyroid malignancy
  • Hypoglycemia if combined with insulin or sulfonylureas
  • Renal injury
  • Severe epigastric pain
  • Allergic reactions
  • Inflammation of gall bladder
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Mounjaro Vs Saxenda Drug Interactions:

Certain drugs when combined with Saxenda and Mounjaro may result in a loss of the blood glucose-lowering effects of these drugs. These include corticosteroids, thiazides, and beta-agonists.

Other drugs such as insulin and sulfonylurea may result in hypoglycemia when given in combination with Saxenda and Mounjaro.

Drug Interactions

Both of these are associated with severe drug reactions when used along with one of the fluoroquinolones called Gatifloxacin.

And another drug that is used to treat skin malignancies called Bexarotene

Less Severe Drug Interactions

Hypoglycemia:

  • Patients having diabetes mellitus using another type of insulin or oral medications like sulfonylureas can develop severe hypoglycemia

Diuretics:

  • Diuretics, especially hydrochlorothiazide and bumetanide can cause dehydration and renal injury.

Oral, IV, and Topical steroids:

  • Steroids cause weight gain and impair diabetes control.
  • Topical steroids which are used in acne-like mometasone can have moderate adverse reactions with both Saxenda and Mounjaro

Long-acting beta-agonists like Salmeterol which are used in asthma

Estrogen-containing drugs like Combined oral contraceptive pills have severe adverse reactions when combined with the use of Saxenda

Antivirals like Indinavir, Atazanavir, and Ritonavir cause severe interactions with Mounjaro.

Antibiotics including clarithromycin and atypical antipsychotics like clozapine

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Saxenda and Mounjaro: Who should not take these drugs:

There are certain conditions where both these drugs may do more harm than help you. If you have any of the following conditions, seek medical advice and avoid Saxenda and Mounjaro:

Warnings:

Saxenda

Mounjaro

Saxenda should not be used if one of the following is present:

  • You are allergic to the active component of liraglutide
  • Have MEN-2 syndrome
  • Have DKA
  • Are under 18 years of age
  • Have a family history of thyroid cancers especially medullary thyroid cancers
Mounjaro should not be used if any of the following is present:

  • You are allergic to Tirzepatide
  • Have a history of renal disease
  • Have a history of diabetic retinopathy
  • are planning to conceive
  • are planning to lactate or lactating
  • are having severe stomach problems.

There are other medical conditions where both Saxenda and Mounjaro may not be contraindicated but you should tell your healthcare provider and be cautious about these conditions.

Seek medical advice if you have any of the following conditions:

Seek medical advice:

Saxenda

Mounjaro

Medical advice should be sought before using Saxenda if:

  • Have a chronic renal failure
  • Have liver disease
  • Have ischemic heart disease
  • Have a deranged lipid profile
  • About to conceive or pregnant
  • You are breastfeeding or are planning to breastfeed
  • Have had pancreatitis
Medical advice should be sought before using Mounjaro if:

  • Have pancreatic problems
  • Are about to conceive
  • Are breastfeeding or about to start
  • Have a history of diabetic retinopathy
  • have a personal or a family history of MTC (Medullary thyroid cancer) or MEN syndrome.
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What do you think?

Written by Ahmed Farhan

I am an Internist practicing medicine for the last fifteen years. Over the years, I have learned that medicine is not about prescribing pills. True medical practice is helping people.
I do prescribe pills as well but the best results I get are when I motivate people to overcome their problems with little changes in their lifestyles.
Since most of my patients are obese and have diabetes, hypertension, and high cholesterol levels, I am writing at dibesity.com when free.
Dibesity, I know the correct word is diabesity. Ignore this! Be with us.
Also, you can contact me directly at dibesity.com@gmail.com

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