Invanz vs. its authorized generic and generics

How to pay the least

Ask for the cash price

Generic ertapenem

No pharmacy we check posts a price for it.

Ask your pharmacy for the cash price of generic ertapenem.Find pharmacies near you
Ask one or two other pharmacies too. Cash prices for the same generic can differ a lot from store to store.

A regular generic has the same active ingredient as Invanz, and the FDA requires it to work the same way.

Compare every option

Brand nameInvanz

Authorized genericertapenem

Regular genericertapenem

What you’d pay

Cash priceAsk the pharmacyUsually the highest price

Cash priceAsk the pharmacyUsually among the lowest

Same as Invanz?

The original

Same medicine

Same active ingredientFillers and dyes can differ

Brand nameNo maker’s card

We didn’t find a savings card or cash price from Invanz’s maker. Ask the pharmacy for Invanz’s cash price. With insurance, ask what your plan charges.

Authorized genericThe NDC to ask for

The same medicine as Invanz, without the brand name. Give the pharmacy its NDC to get it.

ertapenem

Sold by

Endo

NDC to ask for

1 ginjection (powder to mix)
- 42023-221-1011-digit: 42023-0221-1010 vials per package
- 42023-221-8511-digit: 42023-0221-8510 vials per package

Source: FDA, updated October 30, 2026

What to say at the pharmacy

“Before you fill my Invanz, can you tell me what I’d pay for the brand, for the authorized generic from Endo (NDC 42023-221-10), and for a regular generic?”

Paying cash? Ask for each one’s cash price. With insurance, ask what your plan charges for each.

Brand and authorized generic labels

Official labels and ingredient lists from DailyMed (U.S. National Library of Medicine).

Same active and inactive ingredients as Invanz.

Authorized generic package label from Endo — Authorized genericEndo

See the ingredients

Active: ertapenem sodium 1 g

Inactive, on both labels:

Sodium bicarbonate
Sodium hydroxide

Regular genericWho makes it

11 companies sell a generic of Invanz that the FDA rates a substitute. A pharmacy fills whichever one it stocks. To get a certain maker, ask for it by name; most pharmacies can order it in a day or two.

ApotexInjection 1 g/20 mL

Made by Savior Lifetec

How it looks, what’s in it, NDCs

1 g/20 mL

Package NDC
Carton of 200 mL 60505-6196-4

Inactive ingredients: sodium hydroxide, sodium bicarbonate
FDA label
BluePoint LaboratoriesInjection 1 g/20 mL

Made by Savior Lifetec

How it looks, what’s in it, NDCs

1 g/20 mL

Package NDC
Carton of 200 mL 68001-408-31

Inactive ingredients: sodium hydroxide, sodium bicarbonate
FDA label
Dr. Reddy’s LaboratoriesPowder 1 g

Made by Gland Pharma

How it looks, what’s in it, NDCs

1 g

Package NDC
Carton of 10 43598-901-58

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
EugiaInjection 1 g

Product page on eugiaus.com

How it looks, what’s in it, NDCs

1 g

Package NDC
Carton of 10 55150-282-20

1 g

Package NDC
Carton of 10 55150-282-09

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
Fosun PharmaPowder 1 g

Made by Gland Pharma

Product page on fosunpharmausa.com

How it looks, what’s in it, NDCs

1 g

Package NDC
Carton of 5 72266-159-05
Carton of 10 72266-159-10

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
Fresenius KabiPowder 1 g

Made by Acs Dobfar Spa

How it looks, what’s in it, NDCs

1 g Colorless to pale yellow

Package NDC
Carton of 10 63323-823-20

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
Hikma PharmaceuticalsPowder 1 g

Made by Acs Dobfar Spa and Qilu Antibiotics Pharmaceutical

How it looks, what’s in it, NDCs

1 g White to off-white

Package NDC
Carton of 10 0143-9398-10

1 g White to almost white

Package NDC
Carton of 10 0143-9429-10

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
HospiraPowder 1 g

Made by Acs Dobfar Spa

How it looks, what’s in it, NDCs

1 g White to off-white

Package NDC
Carton of 10 0409-3510-22

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
NorthStar RxPowder 1 g

Made by Gland Pharma

Product page on northstarrxllc.com

How it looks, what’s in it, NDCs

1 g

Package NDC
Carton of 10 16714-889-10

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
Sagent PharmaceuticalsPowder 1 g

Made by Qilu Antibiotics Pharmaceutical

Product page on sagentpharma.com

How it looks, what’s in it, NDCs

1 g

Package NDC
Carton of 10 25021-199-66

1 g

Package NDC
Carton of 10 25021-199-20

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label
WG Critical CarePowder 1 g

Made by Acs Dobfar Spa

Product page on wgcriticalcare.com

How it looks, what’s in it, NDCs

1 g White to off-white

Package NDC
Carton of 10 44567-820-10

Inactive ingredients: sodium bicarbonate, sodium hydroxide
FDA label

Package	NDC
Carton of 200 mL	60505-6196-4

Package	NDC
Carton of 200 mL	68001-408-31

Package	NDC
Carton of 10	43598-901-58

Package	NDC
Carton of 10	55150-282-20

Package	NDC
Carton of 10	55150-282-09

Package	NDC
Carton of 5	72266-159-05
Carton of 10	72266-159-10

Package	NDC
Carton of 10	63323-823-20

Package	NDC
Carton of 10	0143-9398-10

Package	NDC
Carton of 10	0143-9429-10

Package	NDC
Carton of 10	0409-3510-22

Package	NDC
Carton of 10	16714-889-10

Package	NDC
Carton of 10	25021-199-66

Package	NDC
Carton of 10	25021-199-20

Package	NDC
Carton of 10	44567-820-10

Who sells it: FDA and Medicaid records, updated weekly. Each maker’s page, card and program is from its own site.

What it’s used for

Infections inside the belly
Skin and diabetic foot infections
Pneumonia
Urinary tract and kidney infections
Pelvic infections
Preventing infection after colorectal surgery

What the FDA label says

INVANZ is a penem antibacterial indicated in adult patients and pediatric patients (3 months of age and older) for the treatment of the following moderate to severe infections caused by susceptible bacteria:

Complicated intra-abdominal infections.
Complicated skin and skin structure infections, including diabetic foot infections without osteomyelitis.
Community-acquired pneumonia.
Complicated urinary tract infections including pyelonephritis.
Acute pelvic infections including postpartum endomyometritis, septic abortion and post-surgical gynecologic infections.

INVANZ is indicated in adults for the prophylaxis of surgical site infection following elective colorectal surgery.

To reduce the development of drug-resistant bacteria and maintain the effectiveness of INVANZ and other antibacterial drugs, INVANZ should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria.

Source: the FDA label for Invanz (Merck Sharp & Dohme LLC), February 4, 2026. Full label on DailyMed

Good to know

It may look different from Invanz (color, shape, or markings). That’s normal for an authorized generic.
If your prescription says “dispense as written,” the pharmacy needs your prescriber’s OK to give you the authorized generic.
Cash prices can differ a lot from one pharmacy to the next, so it can pay to ask two. With insurance, what you pay depends on your plan.
If your pharmacy doesn’t stock it, they can often order it within a day or two.
Don’t stop or change a medicine without talking to your pharmacist or prescriber.

Prices change: confirm with the pharmacy before you fill. drugalt.com/drug/invanz/