Mounjaro (Tirzepatide) 5mg/dose KwikPen Solution for injection in pre-filled pen 1 Pen

Mounjaro 5mg solution for injection in a pre-filled pen contains tirzepatide, a prescription medicine that acts on two hormone pathways known as glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. It is administered once weekly by subcutaneous injection and is used under the supervision of a healthcare professional. Tirzepatide helps regulate blood glucose levels and can also affect appetite and food intake, making Mounjaro a treatment option for eligible adults with type 2 diabetes and for adults who meet the criteria for medical weight management.

Mounjaro 5mg is commonly the next dose after the initial 2.5mg once-weekly starting dose. After the first four weeks, a doctor may recommend increasing the dose to 5mg if the treatment is tolerated and further treatment is appropriate. Some patients may remain on 5mg as a maintenance dose, while others may require a gradual increase to a higher strength depending on their response, tolerability and individual treatment goals.

When used for weight management, Mounjaro 5mg should be combined with a reduced-calorie diet and increased physical activity as part of an overall treatment plan. Common side effects can include nausea, diarrhoea, constipation, vomiting, decreased appetite and other gastrointestinal symptoms, particularly during dose escalation. Understanding how tirzepatide affects GIP and GLP-1 pathways can help you understand how the medicine works; read our guide on how Mounjaro works inside your body for more information.

Mounjaro 5mg should only be used according to your prescribed treatment plan. Your doctor or pharmacist can advise you on the appropriate dose, injection technique, possible side effects and how Mounjaro fits into your overall diabetes or weight-management treatment.

Mounjaro 5mg is indicated for adults with insufficiently controlled type 2 diabetes mellitus as an adjunct to diet and exercise. It may be prescribed on its own when metformin is not appropriate because of intolerance or contraindications, or alongside other medicines used to manage diabetes. The treatment plan is individualised according to blood glucose control, medical history, other medicines and response to treatment.

Mounjaro is also indicated as an adjunct to a reduced-calorie diet and increased physical activity for weight management, including weight loss and weight maintenance, in eligible adults. In Singapore, the approved indication includes adults with an initial BMI of 30 kg/m² or higher, or adults with a BMI of 27 kg/m² to below 30 kg/m² who have at least one weight-related health condition, such as hypertension, dyslipidaemia, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes.

The 5mg strength has an important role in the usual Mounjaro dose-escalation schedule. Treatment is generally started at 2.5mg once weekly, followed by 5mg once weekly after the initial treatment period. Some patients may remain on 5mg as a maintenance dose, while others may require a higher dose if their doctor considers further escalation appropriate. Dose changes should only be made according to the prescribed treatment plan.

Mounjaro should be used with appropriate lifestyle measures and regular medical follow-up. Patients taking insulin or sulfonylureas may require additional monitoring because combining these medicines with tirzepatide can increase the risk of hypoglycaemia. Mounjaro should not be combined with another tirzepatide-containing medicine or GLP-1 receptor agonist unless specifically directed by a healthcare professional.

Is Mounjaro available in Singapore?

Mounjaro (tirzepatide) is registered in Singapore as a prescription-only medicine and is listed in the Singapore National Drug Formulary (NDF). Registered Mounjaro presentations include the 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg strengths, including pre-filled pen formulations. The NDF lists tirzepatide products as generally available across several public healthcare institutions in Singapore. However, this does not mean that every Mounjaro strength is always in stock or immediately available at every pharmacy, clinic or hospital.

The NDF specifically states that its general availability information does not reflect actual inventory and may change according to supply and healthcare institution requirements. Therefore, a particular Mounjaro dose being temporarily unavailable at one pharmacy or healthcare institution should not automatically be interpreted as a nationwide Mounjaro shortage in Singapore. Patients should confirm current stock and supply arrangements with their healthcare provider or pharmacy before arranging treatment or collecting their prescription.

Availability can also vary between Mounjaro strengths. For example, the 2.5mg starting dose may be available while another dose is temporarily out of stock, or a higher maintenance dose may have different supply conditions. This is particularly relevant for patients who are gradually increasing their tirzepatide dose under medical supervision.

If your prescribed Mounjaro strength is unavailable, do not change to another strength, increase or reduce your dose, or switch to another GLP-1 medicine without speaking to your doctor. Your doctor or pharmacist can advise whether you should wait for the prescribed strength, obtain it through another authorised supply channel, or consider an appropriate alternative based on your treatment plan.

Why can Mounjaro availability vary in Singapore?

• High demand: Demand for tirzepatide and other GLP-1 medicines can affect the availability of particular strengths.
• Strength-specific supply: Mounjaro is available in several dose strengths, so stock can differ between 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg.
• Healthcare institution: Stock and supply arrangements can differ between hospitals, polyclinics, clinics and pharmacies.
• Prescription requirements: Mounjaro is a prescription-only medicine in Singapore and must be supplied under appropriate medical supervision.
• Supply and distribution changes: Pharmaceutical supply can change over time because of manufacturing, distribution and demand conditions.
• Treatment-stage requirements: Patients may require different Mounjaro strengths as their treatment progresses, so availability of the prescribed dose is more important than simply finding another strength in stock.

Where can I check Mounjaro availability in Singapore?

The Singapore National Drug Formulary provides information about the general availability of tirzepatide products in participating public healthcare institutions. However, the NDF does not provide real-time pharmacy inventory. Patients should therefore contact the relevant hospital, polyclinic, clinic or pharmacy directly to confirm whether their prescribed Mounjaro strength is currently available.

For patients considering Mounjaro for weight management, it is also important to understand whether tirzepatide is appropriate for their individual circumstances before arranging treatment. Read our guide on who Mounjaro is suitable for to learn more about treatment eligibility and factors your doctor may consider.

Can I buy Mounjaro from an online pharmacy if it is unavailable locally?

Mounjaro is a prescription-only medicine, so patients should only obtain it through legitimate healthcare and pharmacy channels with the appropriate prescription and medical oversight. HSA has warned consumers about the risks of obtaining prescription medicines and injectable weight-management products from unauthorised online or overseas sources, where products may be counterfeit, improperly stored or otherwise unsuitable for use.

If you are considering obtaining Mounjaro from outside Singapore, the order must also be subject to the applicable Singapore requirements for importing and receiving prescription medicines. Do not assume that a product being sold online is automatically authorised for supply or import into Singapore.

What should I do if my Mounjaro dose is out of stock?

If your prescribed Mounjaro strength is temporarily unavailable, speak with your doctor or pharmacist before making any changes. Do not use a different Mounjaro strength as a substitute, take additional injections to compensate, or switch to another GLP-1 medicine without medical advice. Your healthcare professional can assess your current treatment stage and advise you on the safest option based on your prescribed dose and available supply.

For patients ordering Mounjaro through DoctorOnCall, availability may depend on the prescribed strength, prescription verification, current stock and applicable delivery requirements. Temperature-sensitive medicines also require appropriate handling during delivery. Always check the current product listing and ordering information before placing an order.

The starting dosage is typically 2.5 mg once a week; your doctor may gradually increase the dose, but the usual maintenance dose is 5 mg up to a maximum of 15 mg once a week.

Use Mounjaro 5mg once a week as an injection under your skin (subcutaneously), preferably on the same day each week.

The shelf life of Mounjaro 5mg is 30 months when stored correctly and unopened.

Store in a refrigerator between 2°C to 8°C. Do not freeze. Keep the pen in its original carton to protect it from light.

• Nausea
• Diarrhea
• Decreased appetite
• Vomiting
• Constipation
• Indigestion
• Fatigue
• Abdominal discomfort

Do not use Mounjaro if you are allergic to tirzepatide or any of the other ingredients in the injection. It is also not recommended for use in individuals with a personal or family history of medullary thyroid carcinoma (a type of thyroid cancer) or in patients with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

Tirzepatide may interact with other oral medications by slowing down stomach emptying, which can impact how quickly other drugs are absorbed. Caution is advised when used alongside insulin or other medications that lower blood sugar, as there may be an increased risk of hypoglycemia. Speak to your healthcare provider before making changes to your regular medication or diet.

• Use the pen exactly as instructed by your healthcare provider
• Rotate injection sites weekly to avoid skin irritation
• Keep track of your weekly dose day to stay consistent
• Do not share your pen with others, even if the needle is changed
• Dispose of pens safely in a sharps container after use
• Always check for particles or discoloration before injecting
• If missed, take it as soon as possible within 4 days; otherwise, skip and continue
• Contact your pharmacist or doctor if unsure how to use the pen

Mounjaro, Ozempic and Wegovy are prescription medicines that differ in their active ingredients, mechanisms of action, approved uses, dosing and cost. Mounjaro contains tirzepatide, while Ozempic and Wegovy contain semaglutide. Although all three are administered once weekly, they have different approved indications and treatment considerations. Prices can vary between clinics and pharmacies depending on the prescribed strength, consultation fees, GST and whether delivery or follow-up care is included. The figures below are approximate medication costs in Singapore and are intended as a general guide rather than a fixed price.

Important: The estimated prices above refer to medication costs only and may not include consultation, follow-up, delivery, GST or other healthcare fees. Actual prices may vary according to the prescribed strength, treatment duration, supplier and healthcare provider. The Mounjaro price range shown above is a general estimate and does not represent the price of every Mounjaro strength. For the latest Mounjaro, Ozempic or Wegovy price in Singapore, contact DoctorOnCall before ordering.

Mounjaro vs. Ozempic vs. Wegovy: Which is Right for You?

Mounjaro contains tirzepatide, which activates both GIP and GLP-1 receptors, while Ozempic and Wegovy contain semaglutide, which acts primarily on the GLP-1 receptor. All three are administered once weekly, but they have different approved indications, dosing schedules and treatment considerations.

• Mounjaro (Injectable Pen): Taken once a week, starting at 2.5mg and gradually increased according to the prescribed treatment plan. Mounjaro contains tirzepatide and is approved in Singapore for the treatment of type 2 diabetes and weight management in eligible adults.
• Ozempic (Injectable Pen): Taken once a week and contains semaglutide. It is primarily used for the treatment of adults with type 2 diabetes and should be used according to its approved indication and prescribed dose.
• Wegovy (Injectable Pen): Taken once a week and contains semaglutide. It is specifically indicated for weight management in eligible patients and is used alongside a reduced-calorie diet and increased physical activity.

The most suitable option depends on your medical history, treatment goals, current health conditions, prescribed indication and how you respond to treatment. A healthcare professional can assess these factors and recommend the most appropriate treatment for you.

Not sure whether Mounjaro, Ozempic or Wegovy is suitable for your health goals? Consult with our licensed doctors or pharmacists today to review your medical history and determine the most appropriate treatment plan for you.

How much does Mounjaro 5mg cost in Singapore?
The average market price for Mounjaro in Singapore is approximately SGD 700–SGD 1,100 per month. The actual cost can vary depending on the prescribed strength, pharmacy, stock availability and promotions. Please check the current DoctorOnCall product listing for the latest price in SGD before ordering.

When do I move from Mounjaro 2.5mg to 5mg?
Mounjaro is generally started at 2.5mg once weekly for the first four weeks. If the treatment is well tolerated, your doctor will usually consider increasing the dose to 5mg once weekly. The timing of any dose change should be determined by your prescriber.

Is Mounjaro 5mg a maintenance dose?
Yes. Mounjaro 5mg is one of the recommended maintenance doses. Some patients may remain on 5mg if it provides an appropriate response and is well tolerated, while others may require further dose escalation under medical supervision.

Can I stay on Mounjaro 5mg long term?
Some patients can remain on 5mg as their maintenance dose when clinically appropriate. Your doctor will consider your response, tolerability, medical history and treatment goals when deciding whether you should stay on 5mg or move to a higher strength.

How does Mounjaro 5mg help with weight management?
Tirzepatide activates both GIP and GLP-1 receptors, which can influence appetite, food intake and blood glucose regulation. When prescribed for appropriate patients, Mounjaro may support weight management alongside a suitable diet and physical activity plan. Read how Mounjaro works inside your body.

What side effects are common with Mounjaro 5mg?
Common side effects include nausea, diarrhoea, constipation, vomiting, reduced appetite and abdominal discomfort. These effects can occur after moving up from 2.5mg and may become less noticeable as your body adjusts. Speak with your doctor if symptoms are severe or persistent.

Do I need a prescription for Mounjaro 5mg?
Yes. Mounjaro 5mg is a prescription-only medicine. A valid prescription and appropriate medical assessment are required before dispensing. Do not purchase or use a higher strength without medical supervision.

Can I order Mounjaro 5mg from Malaysia to Singapore?
DoctorOnCall provides online pharmacy services for Singapore customers, subject to prescription requirements, product availability and applicable cross-border medicine requirements. Customers should ensure that their order and prescription comply with the relevant Singapore requirements before purchasing.

How long does Mounjaro 5mg take to arrive in Singapore?
Delivery to Singapore typically takes 5–9 working days. The actual delivery time can vary depending on the destination, courier service, stock availability and any customs or processing requirements.

What is the delivery fee for Mounjaro 5mg to Singapore?
Delivery charges vary according to the destination, shipping method, order value and any special handling requirements. Please check the applicable fee at checkout or contact DoctorOnCall customer support. Full details are available on our Singapore shipping information page.

How should Mounjaro 5mg be stored?
Unopened Mounjaro should generally be refrigerated at 2°C to 8°C and must not be frozen. Protect the pen from direct sunlight and excessive heat. If you suspect that the product was exposed to unsuitable temperatures during delivery, contact the pharmacy before using it.

What happens if I miss a Mounjaro 5mg dose?
A missed dose can generally be taken within 4 days (96 hours) of the scheduled dose. If more than 4 days have passed, skip the missed dose and continue with your next scheduled dose. Do not take two doses within 72 hours of each other.

Can I take Mounjaro 5mg with Ozempic or Wegovy?
Mounjaro should not normally be combined with another GLP-1 receptor agonist such as Ozempic or Wegovy unless specifically directed by your doctor. Using these medicines together without appropriate medical supervision is not recommended. Read how Mounjaro compares with other GLP-1 options.

Can I use Mounjaro 5mg with insulin or other diabetes medicines?
Mounjaro may be prescribed with certain diabetes medicines, but your doctor should know everything you are taking. Combining Mounjaro with insulin or sulfonylureas can increase the risk of low blood sugar and may require closer monitoring or adjustment of your treatment.

Who is Mounjaro 5mg suitable for?
Suitability depends on your medical history, current medicines, treatment goals and response to previous doses. Your doctor should assess whether 5mg is appropriate before prescribing it, particularly if you have experienced significant side effects during dose escalation.

Can I get pharmacist support when ordering Mounjaro 5mg?
Yes. DoctorOnCall's pharmacy and customer support teams can assist with questions about prescriptions, product availability, payment, delivery and storage. Medical decisions about dose changes should be made with your doctor.

Mounjaro (Tirzepatide) injection is available in different strengths and pack sizes to support individualized treatment plans for type 2 diabetes and weight management. Your doctor will determine the right dose and pen type based on your treatment response and health condition.

• Mounjaro (Tirzepatide) 2.5mg/dose KwikPen Solution for Injection in Pre-filled Pen 1s – Typically prescribed as the starting dose to allow your body to adjust gradually to tirzepatide.
• Mounjaro (Tirzepatide) 5mg/dose KwikPen Solution for Injection in Pre-filled Pen 1s – A higher single-pen option for ongoing blood sugar control once initial tolerance is established.
• Mounjaro (Tirzepatide) 2.5mg Solution for Injection in Pre-filled Pen 4s (Box) – A multi-pen pack for patients beginning treatment or maintaining a low-dose regimen under medical supervision.
• Mounjaro (Tirzepatide) 5mg Solution for Injection in Pre-filled Pen 4s (Box) – A convenient multi-pen pack for continued therapy at the 5mg maintenance dose.

You can buy Mounjaro online in both Singapore and Malaysia through our licensed online pharmacy, offering authentic, doctor-approved medication with fast, discreet delivery. Always use Mounjaro exactly as prescribed by your healthcare professional.

If you’re uncertain which strength or pack size is suitable for your treatment plan, consult a doctor online for private, personalized medical advice before purchasing.