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Medically reviewed by: Samuel Maaiah, PharmD

Last updated on August 18, 2021

Dr. Maaiah is a PharmD graduate who has practiced both in pharmaceutical consulting and retail pharmacy. His interests include consulting and the development and approval of new therapeutics. He currently works as a Medical Information Consultant (MIC) and as a retail pharmacist. As a MIC he helps pharmaceutical companies with projects and by consulting as a medical information expert.

When Dr. Maaiah is not working, he enjoys spending time with his family and friends, doing outdoor activities, working out, and reading.

Janumet Coupon

Get $10 off order



* minimum order of $100

* Please note, these coupon codes listed here are one-time use and cannot be combined with other coupons or offers.

Order Online

How to buy Janumet (sitagliptin and metformin) online?

Janumet can be ordered online through 90daymeds.com or by calling 1-800-828-4489 and speaking to customer support. The chat feature can also be used for help. For more information please visit the “How to Order” page on 90daymeds.com.

Is a prescription required?

Yes, a valid prescription from your doctor is required. Janumet is a prescription medication and can only be sold with a prescription. To process your order, you will need to submit a prescription. The prescription can be emailed ([email protected]), faxed (1-800-416-8019), or uploaded. Alternatively, we can reach out to your doctor to attain a valid prescription if you would like.

What is the maximum amount that can be ordered?

A 3-month supply (90 days) is the maximum amount that can be ordered at one time. Refills are kept on file for future orders. The amount that can be ordered will be based on the directions and quantity indicated on the prescription from your provider.

Is it safe to order Janumet (sitagliptin and metformin) from 90-Day Meds?

Absolutely. All our partner pharmacies are fully licensed and certified in their respective countries. We ensure that your shopping experience is safe and secure with our Norton Shopping Guarantee. We operate just like your local pharmacy would, with our main priority being to provide you access to safe and affordable prescription medication.

Janumet Cost

Average US Retail Price 90-Day Meds Price
Janumet 50mg/1000mg
(56 tablets)
$604.19 $80.00

How much does Janumet cost?

Above shows the price comparison between the average U.S. retail price and 90-Day Meds of Janumet 50mg/1000mg.

We provide Janumet (Sitagliptin and Metformin) 50 mg/1000 mg tablets here at 90-Day Meds at discount price. A quantity of 56 tablets of Janumet costs $80.00, which comes out to $1.43 per unit.

What is the lowest price of Janumet per unit?

Lowest Price Per Unit: $1.10/unit for Janumet (Sitagliptin and Metformin) 50 mg/1000 mg tablets

Is this price for Janumet without insurance?

The listed prices above are without insurance. Unfortunately, we cannot accept insurance. However, we will give you an official receipt which you can use to apply for reimbursement with your insurance provider since we are also unable to adjudicate with US insurance providers.

Why is Janumet cheaper from Canada than from the United States?

Drug prices are regulated in Canada. The US is a free market economy which is why the price differs since pharmaceutical suppliers can charge what they determine to be appropriate for the product. As a result, we can offer lower prices to our patients as we supply medications from these countries. 

Janumet Coupon

Sorry, we do not have a Janumet (Sitagliptin/Metformin) coupon at the moment, please check back later.

Yes, Check out the Coupon Section of this page.

Is there a coupon for Janumet available?

Yes, we do you have a Janumet coupon for an extra discount on your prescription. You can save $10 off your order with coupon code JANUMET10. Apply coupon at checkout for instant savings and pay less for your prescription with a minimum $100 order.


Is there a lower cost generic Janumet (Sitagliptin and Metformin) available?

Janumet (Sitagliptin and Metformin) is not available as a generic alternative.

How much cheaper is generic Janumet?

Generic drugs are typically much cheaper than the brand name option. There is currently no generic alternative to Janumet.  

What is the difference between brand and generic Janumet?

Once available on the market, there will be no difference between generic and brand Janumet. Generic formulations of medications contain the same active ingredients and meet the same quality, strength, and purity standards as the brand formulation.


Is shipping available to the United States?

Yes. An email notification will be sent to you once the item has been shipped. We ship nationwide across the United States. 

How much does shipping cost?

There are no standard shipping fees.

Is express shipping available?

If a product of Canada is available then express shipping can be selected with an estimated delivery time of 3-5 business days. You have the option at the checkout page to select the express shipping option ($25) if available for that medication source.

Refill RX

How to refill a prescription?

Refilling your prescription is made easy with 90-Day Meds. You can sign into your online account and view your previous orders and see which prescriptions we have on file. Placing a refill order online is made simple by accessing the reorder section in your account.
You can also call us at 1-800-416-8019 and speak to customer support to place a refill. Our live chat is also a great place to connect with us to place a refill order while you are on the go.

Are prescriptions automatically refilled?

We do not automatically refill prescriptions as there can be cases where you are no longer taking the medication, your doctor has changed your dose, etc. However, we provide a friendly refill reminder service. We will kindly notify you by phone or email as to the best time to place a refill order based on your prescription history.

Drug Information


What is Janumet (Sitagliptin and Metformin)?

Janumet is a prescription medication that is classified as a combination product containing a dipeptidyl peptidase 4 (DPP-4) inhibitor (sitagliptin) and a biguanide (metformin). 


What is Janumet used for?

It is used for the treatment of type 2 diabetes mellitus.

How does it work?

The sitagliptin component inhibits DPP4 which allows for increased levels of glucagon-like peptide-1 (GLP-1) which lower glucose levels in a glucose-dependent manner. Metformin increases glucose uptake and utilization to lower blood glucose levels.  


How do I take Janumet?

Take your Janumet by mouth with meals at the same time every day as directed by your doctor. 

What dosages are available?

Janumet comes as a brand only in 50mg/500mg and 50mg/1000mg IR tablets (sitagliptin/metformin) and 50mg/500mg, 50mg/1000mg, and 100mg/1000mg ER tablets (sitagliptin IR/metformin ER). 

What is the recommended dosage?

The dose varies per patient-specific needs, for dosage recommendations refer to your doctor. 

What is the maximum dosage?

The maximum recommended dosage is 100mg sitagliptin/2000mg metformin per day.

What if I miss a dose?

Take the medication as soon as possible if you have missed a dose. If it is almost time for your next dose, skip the missed dose and return back to your regular schedule. Never double the dose.


What should you know before you take Janumet (Sitagliptin and Metformin)?

Severe/disabling arthralgia has been reported with DPP-4 inhibitors. Onset can occur within a day to years after starting therapy. 

Bullous pemphigoid development has been associated with DPP-4 inhibitors.

Rare hypersensitivity reactions can occur, including Steven-Johnson syndrome.

Acute pancreatitis cases have been reported with use. 

Caution in renal function. Dose adjustment/discontinuation of therapy may be needed.

  • eGFR > 45 mL/minute/1.73m2: No dose adjustment needed. 
  • eGFR 30 to 45 mL/minute/1.73m2:
    • Initiation: Not recommended.
    • Continuation: A metformin dose reduction of 50% is needed (maximum 1 g/day) and limit the dose of sitagliptin to 50 mg once daily. 
  • eGFR < 30 mL/minute/1.73m2: Use is contraindicated. 

If acute kidney injury occurs during therapy, the patient should hold the medication due to the metformin component.

Worsening renal function has been reported with sitagliptin.

Vitamin B12 deficiency has been associated with long-term metformin use. Vitamin B12 serum concentrations should be periodically monitored with long-term therapy.

U.S. Boxed Warning: Metformin-induced lactic acidosis have been reported in postmarketing cases that have resulted in death. The risk is increased with renal dysfunction.

Side Effects

What are the side effects of Janumet (Sitagliptin and Metformin)?

Some common side effects include:

  • Abdominal pain, diarrhea, nausea
  • Headache
  • Upper respiratory tract infection

Speak to your doctor for a full list of side effects that apply to you if you are taking Janumet.


Does this medication interact with other drugs, foods, or alcohol?

Avoid use with alcohol due to increased risk of lactic acidosis with metformin (Risk Category X).

This is not a full list of potential drug-drug-interactions. Speak to your doctor if you have any concerns about drug-drug-interactions. 


How should this medication be stored?

Janumet should be stored between 20-25°C (68-77°F). Excursions are allowed to be stored between 15-30°C (59-86°F)

Pharmacist Tips

  • Take with food to decrease the risk of any gastrointestinal side effects due to the metformin component of the medication.


Is Janumet the same as Metformin?

No. Janumet is composed of sitagliptin and metformin.

Is Janumet a blood thinner?

No. Janumet is an anti-diabetic medication.

What class of drug is Janumet?

Janumet is made up of two drug classes, a DDP-4 inhibitor and a biguanide.

Is Janumet bad for the kidneys?

Use of Janumet can worsen renal function (due to the sitagliptin component). Depending on the renal dysfunction, a dose adjustment or discontinuation of therapy may be required.

Is Janumet insulin?

No, Janumet is a DPP-4inhibitor (sitagliptin) and a biguanide (metformin).


This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs before taking any medication.