Mounjaro® (Tirzepatide)



Prescription Required. Brand Name Product. Shipped From Canada.
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    Mounjaro® (Tirzepatide)


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    •  How To Use
    •  Box Warning

      The official box warning for Mounjaro (tirzepatide) includes information about the risk of thyroid C-cell tumors. Specifically, it has been observed that in both male and female rats, tirzepatide causes dose-dependent and treatment-duration-dependent thyroid C-cell tumors at clinically relevant exposures. However, it is currently unknown whether Mounjaro causes thyroid C-cell tumors, including medullary thyroid carcinoma (MTC), in humans. The relevance of these findings from animal studies to humans has not been determined.

      Mounjaro is contraindicated for patients with a personal or family history of medullary thyroid carcinoma or in patients with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). Patients are advised to be aware of the potential risk for MTC when using Mounjaro and to be informed about the symptoms of thyroid tumors, such as a mass in the neck, difficulty swallowing or breathing, and persistent hoarseness.

      It's important to note that routine monitoring of serum calcitonin or using thyroid ultrasound for early detection of MTC in patients treated with Mounjaro is of uncertain value and might lead to unnecessary procedures due to low specificity of these tests.

      Additionally, Mounjaro should not be used in patients with a history of pancreatitis, and care should be taken in patients receiving Mounjaro in combination with insulin secretagogues or insulin due to an increased risk of hypoglycemia

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      mounjaro vials

      Mounjaro® (Tirzepatide)


      Ask a Pharmacist

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      Medically Reviewed by

      Matt Sommers (PharmD)

      Active Ingredient:Tirzepatide
      Warnings:Possible thyroid tumors, including thyroid cancer
      Drug Type:GLP-1 receptor agonist
      Used For:FDA-approved for type 2 diabetes and used for obesity at a prescriber’s discretion
      Administration:Subcutaneous Injection (once weekly)
      Available Strengths:2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg
      Storage:Keep in the refrigerator between 36°F and 46°F (2°C and 8°C).
      Manufacturer:Eli Lilly

      What is Mounjaro?

      Mounjaro, or tirzepatide, is a prescription medicine patients with type 2 diabetes mellitus use to improve their blood sugar. It should not be used by those with type 1 diabetes, when those with a history of pancreatitis should be cautious when considering this medication.

      Mounjaro Weight Loss

      Though Mounjaro is not an official weight loss drug, it can potentially be beneficial for this purpose when combined with an adjusted diet and regular exercise.

      You should not use Mounjaro injections if you:

      ● Are allergic to tirzepatide, the active ingredient in this medicine.
      ● Have a personal or family history of medullary thyroid carcinoma.​
      ● Have multiple endocrine neoplasia type 2.

      Before taking Mounjaro, inform your doctor if you have had problems with your pancreas, kidneys, gastroparesis, or diabetic retinopathy.

      Mounjaro Cost & Coupons

      The climbing cost of Mounjaro can sometimes be covered by insurance, but not always, as it is a relatively new drug. It is common for insurance only to cover people with type 2 diabetes.

      For Americans who have to buy Mounjaro without insurance, their medication can cost around $1,200 per month. That’s where Diet Pens comes into play – with our prescription fulfillment service, you can get the same Mounjaro you would get in the US for significantly less. Compare the Mounjaro Canada price with the American one, and you’ll see for yourself.

      First time customers who are buying Mounjaro from Diet Pens can also save 10% on their first order by using coupon code: DIET10. 

      How Much Is Mounjaro in Canada?

      At the moment, Mounjaro cost in Canada varies to about $100 – $150 per week, meaning that if you buy Mounjaro in Canada, you can save over half of what it would cost to buy Mounjaro in the US.

      How Do You Use Mounjaro?

      Prescription Mounjaro comes in an injectable “pen.” used weekly. It is injected under the skin of the stomach, thigh, or upper arm. You should change the place where you inject the drug each week, and don’t inject Mounjaro right next to insulin injections. You can administer it at any time of day and have food if you choose, but it is not required.

      While pain on the injection site is not a known side effect of Mounjaro, you can feel some pain and discomfort due to the method of administration.

      Read all of the instructions, patient information, packets, and the prescription label carefully so you understand all of the information. Ask your doctor if you have any questions after reading.

      If you need additional help, please do not hesitate to ask for a pharmacy consultation. These consultations are available for customers at Diet Pens.

      Mounjaro Side Effects

      Patients who take Mounjaro for weight loss and diabetes report several common side effects. These include

      • Constipation
      • Diarrhea
      • Decreased Appetite
      • Indigestion
      • Stomach Pain
      • Vomiting

      Mounjaro patients may have more severe side effects. This medicine may cause thyroid tumors and thyroid cancer. Symptoms of these illnesses include a lump or swelling in your neck, trouble swallowing, hoarseness, or shortness of breath.

      In addition to this, Mounjaro may cause other serious side effects that should be communicated to your doctor as soon as possible, which include:

      Drug Interactions Of Mounjaro

      Before you start taking Mounjaro, you should talk to your doctor and inform them about every medication you are currently taking, including vitamins and supplements and other Diet Pens, such as Trulicity or Victoza. Mounjaro interacts with over 200 types of drugs, and two of those interactions are major- specifically bexarotene and gatifloxacin.

      Interaction between Mounjaro and Bexarotene

      Bexarotene is a type of cancer medication known as a retinoid. Its brand name is Targretin. Taking both bexarotene and Mounjaro may make you more likely to get a pancreas disease called pancreatitis. To prevent this interaction, your doctor may prescribe an alternative medication, a smaller dose, or order more frequent monitoring to ensure safe use.

      Warning signs to look for include chronic nausea, vomiting, tenderness in the abdomen, and upper abdominal pain, especially if it wraps to your back or worsens after you eat. If you are taking both medications and have these symptoms, contact your physician immediately.

      Interaction between Mounjaro and Gatifloxacin

      Gatifloxacin is an ophthalmic medication used to treat eye infections. The medication is suspended in eye drops. Its brand name is Zymaxid. It can change how much glucose is in the blood, so people with diabetes shouldn’t take it. There have been reports of low and high blood sugar in patients taking both drugs. Those who were taking gatifloxacin and had severe cases of hypoglycemia have gone into comas and even died.

      Mounjaro Strengths & Dosages

      Most patients start with a dose of 2.5 mg once a week. After a month, the dose may be increased to 5 mg once a week.

      Your doctor may find that you require additional glycemic control. In that case, your dosage will be increased in 2.5 mg increments after at least one month on the same dose.

      The maximum dosage for Mounjaro is 15 mg once a week.

      Mounjaro’s effects are not immediate – it can take a month or longer before you see the medication’s full benefit. You should continue to take Mounjaro even if you feel well; don’t stop taking it without consulting your physician.

      Diet pens Mounjaro Dosages

      Mounjaro, Pregnancy & Breastfeeding

      Before you start taking prescription Mounjaro, you should inform your prescribing doctor if you are already pregnant or are planning on being and if at any point during the course of treatment, you get pregnant. The effects of Mounjaro on unborn babies are not known.

      It is important to note that Mounjaro can make birth control pills less effective. If you want to take Mounjaro, consider other birth control options like barrier methods, an injection, an implant, or a skin patch. You should use additional birth control methods for four weeks following starting this medication and each time the dose is raised.

      Let your doctor know if you are breastfeeding or plan to breastfeed when taking Mounjaro. Researchers don’t know whether tirzepatide passes into the breast milk when you are taking it.


      Yes! If you have a valid prescription, you can purchase any of our medications.

      Simply choose the medication you want to purchase and the required dosage and proceed to check out.

      It takes approximately 4-10 business days. We will provide you with a tracking number as soon as it’s on its way. We highly suggest requesting for text message notifications updates through the tracking page.

      We can try our best! Some pharmacies allow transfers to mail-in pharmacies, while others do not. 

      For prescription transfer requests, click here

      When used as directed, each of these drugs can lead to significant weight loss. However, only Wegovy is approved by the FDA for chronic weight management at this time. 

      Zepbound is also approved for weight loss and has the same active ingredient as Mounjaro.

      Both of these prescription medications help control blood sugar levels in adults with type 2 diabetes when used alongside diet and exercise. Ozempic has also been approved to lower the risk of cardiovascular events like heart attack or stroke in people with type 2 diabetes.

      Mounjaro starts working right away to lower your blood glucose levels. It may take eight to 12 weeks to reach your A1C goal, and significant weight loss may occur within 28 weeks.
      If your doctor prescribes you Mounjaro, your blood sugar levels will likely improve quickly. This can temporarily make diabetic retinopathy symptoms worse, causing issues like blurry vision. Tell your doctor if you notice the following symptoms: a sudden loss of vision, spots in your field of vision, flashing lights, or blurred vision. You should also inform your doctor if you have a history of diabetic retinopathy.
      Mounjaro doesn’t cause fatigue, but fatigue is a common complaint of people with type 2 diabetes. If you have continuous or severe fatigue, tell your doctor.

      If you want to lower the Mounjaro cost, keep your eyes on our emails! We provide discounts throughout the year that can help you save even more money!

      If you are within four days after the missed dose, take it as soon as you remember. If more than four days have passed when you remember, skip the dose you missed and continue with your regular schedule. Never inject two doses of Mounjaro within three days of each other.

      Call Poison Control at 1-800-222-1222 if you believe you have taken too much Mounjaro or call for emergency medical assistance at 911.

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