Drug class
DPP-4 Inhibitors: medications in this class
Oral diabetes medications that help regulate blood sugar after meals.
Overview
DPP-4 is the enzyme that breaks down the body’s own GLP-1. Blocking it keeps GLP-1 active a little longer, so insulin rises after meals and glucagon falls. The effect is gentler than injectable GLP-1 agonists and weight-neutral, which makes the class a convenient add-on to metformin for people who need a modest further reduction without injections.
Sitagliptin (Januvia) is the most prescribed; linagliptin (Tradjenta) needs no dose adjustment for kidney function; saxagliptin and alogliptin are alternatives. Pancreatitis, joint pain and a rare severe skin reaction are the cautions, and saxagliptin and alogliptin carry a heart failure warning.
All are sold in combination with metformin, and some with an SGLT2 inhibitor, as separate brand products.
How the drugs in this class differ when you pay cash
For a decade the whole class was brand-priced, which made it the expensive component of many regimens. Patents on the older members have begun to expire and generic entry is under way or expected, but availability varies by pharmacy and the combination products lag behind. Ask each pharmacy whether it is quoting brand or generic, and whether a differently formulated sitagliptin product, sold under another brand name at a lower list price, is an option for your prescription.
Clinically, a DPP-4 inhibitor adds a modest amount of control; for a cash-paying patient on a brand price, it is worth asking the prescriber whether a cheaper class would do the same job.
When paying cash beats a copay, and when it does not
While brand-priced, insurance with the manufacturer co-pay card wins. Where a pharmacy can dispense a generic, cash quotes drop sharply and comparing pharmacies becomes worthwhile. Uninsured patients on a brand should check the manufacturer assistance programme first.
Conditions treated
- Type 2 Diabetes
Medications
Which of these is right for a given person is a decision for the prescriber. The guides explain what each drug is, how it is supplied, and why its cash price varies between pharmacies. No page on this site shows a price; prices come from pharmacies responding to your actual prescription.
Questions worth asking
- Is a generic available for my prescription, and does it allow substitution?
- Is this medicine doing enough to justify its cost, or would another class do?
- Is my dose right for my kidney function?
- What symptoms of pancreatitis should I watch for?
- Would two separate tablets be cheaper than the combination with metformin?
How Script Unlock gets you a cash price for a DPP-4 Inhibitors prescription
Prices on this site come from pharmacies responding to a real prescription. We do not publish estimated, average or "typical" prices, because none of those would be your price.
- 1You upload your prescription
A photo of your a DPP-4 Inhibitors prescription prescription is enough. Nothing is sold on the site; you are asking pharmacies to quote.
- 2Licensed pharmacies respond
Pharmacies that Script Unlock has verified see the request and each can reply with its own cash price for your exact drug, strength and quantity.
- 3You choose and pay the pharmacy
You compare the responses, pick a pharmacy, and pay that pharmacy directly when you collect. Script Unlock never takes a patient payment and never sets the price.
Sources
- National Institute of Diabetes and Digestive and Kidney Diseases
- FDA Orange Book (approved generics and therapeutic equivalence)
- MedlinePlus drug information (National Library of Medicine)
Written by the Script Unlock editorial team from the sources above. Not yet reviewed by an independent pharmacist. Last checked 2026-10-03.
Script Unlock is a marketplace that lets licensed pharmacies quote a cash price on your prescription. It does not prescribe, dispense or sell medication, does not process patient payments, and does not give medical advice. Always follow the instructions of your prescriber and pharmacist and read the medication guide supplied with your medicine.