What Is Carboplatin? Uses, Dosage, and What You Need to Know in 2026

If you or a loved one has been prescribed carboplatin, you likely have questions: What is it? What does it treat? How is the dose calculated? What should I expect? This guide provides clear answers to all of these questions in plain language.

What Is Carboplatin?

Carboplatin (brand name Paraplatin) is a platinum-based chemotherapy drug used to treat a wide range of cancers. It belongs to the class of alkylating agents — drugs that work by interfering with the DNA of cancer cells, preventing them from dividing and causing them to die. Carboplatin was patented in 1972 and received FDA approval in 1989. It was developed as a less toxic alternative to cisplatin, the first-generation platinum chemotherapy drug.

Today, carboplatin is one of the most commonly used chemotherapy agents in oncology worldwide. It is a cornerstone of treatment for ovarian cancer, lung cancer, breast cancer, head and neck cancer, and many other malignancies.

What Cancers Does Carboplatin Treat?

Carboplatin is FDA-approved for the following indications:

Advanced ovarian carcinoma (initial treatment): Used in combination with other chemotherapy (typically paclitaxel) as the first-line treatment after surgery.

Recurrent ovarian carcinoma (palliative): Used for patients whose ovarian cancer has returned after previous chemotherapy, including those previously treated with cisplatin.

Beyond its FDA-approved label, carboplatin is widely used as the standard of care — often called "off-label" use — in:

Non-small cell lung cancer (NSCLC) — one of the most common uses

Small cell lung cancer (SCLC)

Triple-negative breast cancer (TNBC) and HER2-positive breast cancer

Head and neck squamous cell carcinoma

Endometrial cancer and cervical cancer

Germ cell tumors (testicular cancer)

Brain tumors and neuroblastoma (in pediatric patients)

How Is Carboplatin Given?

Carboplatin is given as an intravenous (IV) infusion over at least 15 minutes, and often longer, in a hospital outpatient infusion center or oncology clinic. It cannot be taken by mouth and cannot be given at home. Treatment is typically repeated every 3–4 weeks (one "cycle"), and most patients receive 4–6 total cycles depending on their cancer type and treatment response.

Carboplatin comes as a 10 mg/mL solution in four vial sizes: 50 mg (5 mL), 150 mg (15 mL), 450 mg (45 mL), and 600 mg (60 mL). It does not require IV hydration before or after infusion — unlike cisplatin, which requires significant fluid administration to protect the kidneys.

How Is the Carboplatin Dose Calculated?

Carboplatin uses an unusual dosing method called the Calvert formula — it is one of the few chemotherapy drugs not dosed by body surface area (BSA). Instead, the dose is calculated based on your kidney function using this formula:

Total Dose (mg) = Target AUC × (GFR + 25)

AUC (area under the curve) is the target drug exposure — typically 4–6 mg/mL·min for single-agent use. GFR (glomerular filtration rate) measures your kidney function. This is why your kidney function (creatinine/GFR) is checked before every carboplatin cycle — the dose must be adjusted if your kidneys are not functioning normally.

Is Carboplatin a Controlled Substance?

No. Carboplatin is not a controlled substance. It has no abuse potential or addiction risk. However, it is a prescription-only drug classified as a hazardous medication under NIOSH guidelines due to its cytotoxic (cell-killing) properties. Special handling procedures are required during preparation and administration.

Is Carboplatin Hard to Find Right Now?

Yes. Carboplatin has been on the FDA's active drug shortage list since April 2023 and remains there as of 2026. If you are prescribed carboplatin, speak with your oncology team about supply status as early as possible. medfinder can help you find infusion centers near you that have carboplatin available. You can also read our article on how to find carboplatin in stock near you for more guidance.