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Registry Hub
Peer-Reviewed Evidence
HomeDrug RegistryCompareTIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE vs CLOFARABINE
Comparative Pharmacology

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE vs CLOFARABINE Comparison

Head-to-head clinical analysis & difference comparison: details on mechanism of action, dosing, half-life, interactions, and maternal-fetal safety.

Clinical EssentialsPharmacokineticsSpecial PopulationsSafety & MonitoringPregnancy & LactationClinical Insights
Differential Analysis

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE vs CLOFARABINE

Clinician-reviewed, head-to-head comparison of mechanism, dosing, pharmacokinetics, and safety profiles.

View TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE Monograph View CLOFARABINE Monograph
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
Antineoplastic Agent
Category C
CLOFARABINE
Antineoplastic Agent
Category C
TL;DR — Key Differences
  • Half-life: TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE has a half-life of The terminal elimination half-life of trifluridine is approximately 1.4 to 2.1 hours. For tipiracil, the half-life is about 2.1 to 3.3 hours. The short half-lives necessitate twice-daily dosing to maintain therapeutic concentrations.; CLOFARABINE has Terminal elimination half-life: 5.2 hours (range 4-6 hours) in adult patients; clinically, this supports a 5-day continuous infusion schedule.
  • No direct drug-drug interaction has been documented between TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE.
  • Pregnancy: TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE is rated Category C; CLOFARABINE is rated Category C.

Last clinically reviewed: July 2026 · OpiCalc Medical Review Team

Clinical Essentials

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Mechanism of Action
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine is a thymidine-based nucleoside analog that incorporates into DNA, interfering with DNA synthesis and function. Tipiracil hydrochloride inhibits thymidine phosphorylase, preventing trifluridine degradation and increasing its systemic exposure.

CLOFARABINE

Clofarabine is a purine nucleoside antimetabolite that inhibits DNA synthesis by reducing intracellular deoxynucleotide triphosphate pools via inhibition of ribonucleotide reductase, and by terminating DNA chain elongation through incorporation into DNA, leading to apoptosis.

Indications
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Metastatic colorectal cancer (m CRC) previously treated with fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy, an anti-VEGF biological therapy, and if RAS wild-type, an anti-EGFR therapy.,Metastatic gastric or gastroesophageal junction adenocarcinoma previously treated with at least two prior lines of therapy including a fluoropyrimidine, a platinum, either a taxane or irinotecan, and if appropriate, HER2/neu-targeted therapy.

CLOFARABINE

Treatment of relapsed or refractory acute lymphoblastic leukemia (ALL) in pediatric patients aged 1 to 21 years,Off-label: Treatment of acute myeloid leukemia (AML), myelodysplastic syndromes (MDS)

Standard Dosing
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

35 mg/m² orally twice daily on days 1-5 and 8-12 of each 28-day cycle. Maximum dose: 80 mg per dose.

CLOFARABINE

52 mg/m^2 intravenously over 2 hours daily for 5 consecutive days, repeated every 28 days.

Direct Interaction
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
No Direct Interaction
CLOFARABINE
No Direct Interaction

Pharmacokinetics

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Half-Life
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

The terminal elimination half-life of trifluridine is approximately 1.4 to 2.1 hours. For tipiracil, the half-life is about 2.1 to 3.3 hours. The short half-lives necessitate twice-daily dosing to maintain therapeutic concentrations.

CLOFARABINE

Terminal elimination half-life: 5.2 hours (range 4-6 hours) in adult patients; clinically, this supports a 5-day continuous infusion schedule

Metabolism
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine is primarily metabolized by thymidine phosphorylase to 5-(trifluoromethyl)uracil (inactive). Tipiracil is metabolized mainly via hepatic carboxylesterases and aldehyde oxidase, not significantly via CYP enzymes.

CLOFARABINE

Hepatic; primarily metabolized by deamination via cytidine deaminase to 6-ketoclofarabine, a major metabolite. Also undergoes phosphorylation intracellularly. CYP450 involvement is minimal.

Excretion
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine is primarily eliminated via metabolism and renal excretion. Approximately 29% of the trifluride dose is recovered in urine as trifluridine and its metabolites, with less than 3% as unchanged drug. Fecal excretion accounts for about 38% of the dose, mainly as metabolites. Tipiracil is predominantly excreted renally (about 55% as unchanged drug and metabolites) and fecally (about 19%).

CLOFARABINE

Renal: 49-60% as unchanged drug; biliary/fecal: minimal (<1%)

Protein Binding
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine: <1% bound to plasma proteins. Tipiracil: about 8% bound to plasma proteins.

CLOFARABINE

47% bound to plasma proteins (primarily albumin)

VD (L/kg)
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine: Vd/F is approximately 0.4 ± 0.1 L/kg, indicating distribution into total body water. Tipiracil: Vd/F is about 0.3 ± 0.1 L/kg.

CLOFARABINE

Vd: 14.6 L/kg (range 10-20 L/kg); indicates extensive extravascular distribution and tissue binding

Bioavailability
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Following oral administration of the combination tablet, trifluridine has an absolute bioavailability of approximately 57% (fasted). Tipiracil bioavailability is about 70% (fasted). Food may alter absorption.

CLOFARABINE

IV: 100% (only IV route); oral: not approved

Special Populations

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Renal Adjustments
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

For GFR 30-59 m L/min: reduce dose to 20 mg/m² twice daily. For GFR 15-29 m L/min: reduce dose to 15 mg/m² twice daily. Contraindicated if GFR <15 m L/min.

CLOFARABINE

Clcr ≥ 60 m L/min: no adjustment; Clcr 30-59 m L/min: reduce dose to 39 mg/m^2; Clcr < 30 m L/min: not recommended (no data).

Hepatic Adjustments
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Child-Pugh A: no adjustment. Child-Pugh B: reduce dose to 25 mg/m² twice daily. Child-Pugh C: not recommended.

CLOFARABINE

Child-Pugh A: no adjustment; Child-Pugh B: reduce dose by 25% (monitor toxicity); Child-Pugh C: not recommended (no data).

Pediatric Dosing
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Not established. Safety and efficacy in pediatric patients have not been studied.

CLOFARABINE

52 mg/m^2 intravenously over 2 hours daily for 5 days every 28 days (same as adult dosing per body surface area; safety and efficacy established in pediatric patients 1 year and older).

Geriatric Dosing
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

No specific dose adjustment recommended; monitor renal function and adjust based on renal impairment. Elderly patients may have increased risk of myelosuppression and infections.

CLOFARABINE

No specific dose adjustment based solely on age; monitor renal function closely due to increased risk of nephrotoxicity; use same dosing as adults with renal adjustment as per GFR.

Safety & Monitoring

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Black Box Warnings
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
FDA Black Box Warning

WARNING: NEUTROPENIA/THROMBOCYTOPENIA; AND GASTROINTESTINAL TOXICITY Neutropenia/Thrombocytopenia: Severe and life-threatening neutropenia and thrombocytopenia can occur. Obtain complete blood counts prior to each cycle and as clinically indicated. Withhold, reduce, or discontinue dosing for severe neutropenia or thrombocytopenia. Gastrointestinal Toxicity: Severe gastrointestinal toxicity including diarrhea, nausea, vomiting, and abdominal pain can occur. Withhold, reduce, or discontinue dosing for severe gastrointestinal toxicity.

CLOFARABINE
FDA Black Box Warning

Clofarabine causes severe bone marrow suppression, including neutropenia, anemia, thrombocytopenia, and increased risk of infection. Hemorrhage and severe infections have been reported. Monitor blood counts regularly.

Warnings/Precautions
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Bone Marrow Suppression: May cause severe neutropenia, thrombocytopenia, and anemia. Monitor blood counts.,Gastrointestinal Toxicity: Severe diarrhea, nausea, vomiting, abdominal pain, and stomatitis. Manage with supportive care.,Renal Toxicity: Proteinuria, nephrotic syndrome. Monitor renal function.,Hepatic Toxicity: Elevations of liver enzymes and bilirubin. Monitor liver function.,Embryo-Fetal Toxicity: Can cause fetal harm. Advise females of reproductive potential of effective contraception and avoid breastfeeding.

CLOFARABINE

1) Myelosuppression: monitor CBCs; dose adjustment may be needed. 2) Infections: increased susceptibility. 3) Hemorrhagic cystitis: may occur; manage with hydration and monitoring. 4) Hepatic toxicity: monitor liver function tests; dose reduction in hepatic impairment. 5) Renal toxicity: monitor renal function; dose adjustment for creatinine clearance <60 m L/min. 6) Tumor lysis syndrome: hydrate and use prophylactic allopurinol. 7) Systemic inflammatory response syndrome (SIRS): monitor for signs; discontinue if occurs.

Contraindications
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

None reported in prescribing information. Use caution in patients with severe renal impairment (Cr Cl <30 m L/min) or severe hepatic impairment.

CLOFARABINE

Hypersensitivity to clofarabine or any component of the formulation; severe hepatic impairment (Child-Pugh class C); severe renal impairment (creatinine clearance <30 m L/min).

Adverse Reactions
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
Data Pending
CLOFARABINE
Data Pending
Food Interactions
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Take within 1 hour after a meal (breakfast and dinner) to reduce variability and improve tolerability. Avoid grapefruit or grapefruit juice? No established interaction; however, general caution due to potential CYP3A4 involvement? (minimal). High-fat meals may reduce peak concentration but do not significantly alter overall exposure; timing with meals is recommended not for efficacy but to mitigate gastrointestinal side effects.

CLOFARABINE

Grapefruit and grapefruit juice may affect liver enzymes and should be avoided. No specific food restrictions, but avoid alcohol due to potential hepatotoxicity. Maintain adequate hydration; no other known food interactions.

Pregnancy & Lactation

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Teratogenic Risk
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Trifluridine/tipiracil is embryotoxic and teratogenic in animal studies. In humans, avoid use during pregnancy; effective contraception required during treatment and for at least 6 months after last dose. First trimester: highest risk of major malformations; second and third trimesters: risk of fetal growth restriction and adverse neonatal outcomes.

CLOFARABINE

Clofarabine is embryotoxic and teratogenic in animal studies. In humans, it is classified as Pregnancy Category D. First trimester exposure is associated with major congenital malformations including neural tube defects, skeletal anomalies, and cardiovascular defects. Second and third trimester exposure may cause fetal myelosuppression, intrauterine growth restriction, and premature delivery.

Lactation Summary
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

No human data on excretion in breast milk. Based on drug properties, likely present; advise against breastfeeding during treatment and for at least 1 day after last dose. M/P ratio unknown.

CLOFARABINE

It is unknown whether clofarabine is excreted in human breast milk. Due to the potential for serious adverse reactions in nursing infants, breastfeeding is contraindicated during therapy and for at least 1 week after the last dose. M/P ratio is not available.

Pregnancy Dosing
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

No established dose adjustments for pregnancy; avoid use. Pharmacokinetic changes in pregnancy (increased volume of distribution, clearance) may alter exposure, but no data to guide adjustment.

CLOFARABINE

No specific pharmacokinetic studies have been conducted in pregnant women. Dose adjustments based on pregnancy-induced physiologic changes (increased plasma volume, renal clearance) are not established. Use with caution; the lowest effective dose based on tolerability and clinical response is recommended. Close monitoring for toxicity is essential.

Maternal Safety Status
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
Category C
CLOFARABINE
Category C

Clinical Insights

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE
CLOFARABINE
Clinical Pearls
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Tipiracil hydrochloride/trifluridine (Lonsurf) is a combination oral cytotoxic agent used for refractory metastatic colorectal cancer and gastric cancer. Trifluridine incorporates into DNA, inhibiting thymidylate synthase; tipiracil inhibits trifluridine degradation by thymidine phosphorylase. Administer within 1 hour after morning and evening meals to reduce variation in exposure. Avoid severe neutropenia by monitoring CBCs before and after each cycle; hold for ANC <500/mm³ or febrile neutropenia. Use antiemetics as needed; nausea/vomiting occur in ~50% of patients. Dose reduction recommended for severe myelosuppression, including thrombocytopenia and anemia. No strong CYP interactions; avoid concurrent use of UGT1A1 or thymidine phosphorylase inhibitors? (limited data). Consider growth factor support for prolonged neutropenia.

CLOFARABINE

Clofarabine is a purine nucleoside antimetabolite used primarily in pediatric relapsed or refractory acute lymphoblastic leukemia (ALL). It is associated with significant myelosuppression; monitor absolute neutrophil count and platelets closely. Capillary leak syndrome and systemic inflammatory response syndrome (SIRS) are rare but serious adverse effects; consider prophylactic corticosteroids. Hepatic veno-occlusive disease (VOD) has been reported, especially in patients with prior stem cell transplant. Administer with adequate hydration and monitor for tumor lysis syndrome.

Patient Counseling
TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE

Take each dose with a glass of water within 1 hour after breakfast and dinner; do not crush or chew tablets.,Swallow tablets whole; do not take if vomiting occurs after a dose—skip that dose and resume next scheduled dose.,Store at room temperature away from moisture and heat; keep bottle tightly closed.,Common side effects include nausea, vomiting, diarrhea, loss of appetite, fatigue, and low blood cell counts.,Contact healthcare provider immediately if fever, signs of infection (sore throat, cough), unusual bleeding/bruising, or severe tiredness occur.,Use effective contraception during treatment and for at least 6 months after the last dose for females and 3 months for males.,Avoid handling crushed or broken tablets; if contact occurs, wash skin thoroughly.,Do not breastfeed during treatment and for at least 1 day after last dose.

CLOFARABINE

Clofarabine is a chemotherapy drug that may lower your blood cell counts, increasing risk of infection, bleeding, and fatigue.,Report any signs of infection (fever, chills, sore throat), unusual bleeding or bruising, or shortness of breath immediately.,Drink plenty of fluids (8-10 glasses per day) to prevent kidney problems and tumor lysis syndrome.,Avoid live vaccines and close contact with people who have recently received oral polio vaccine.,Use effective contraception during treatment and for at least 6 months after the last dose.,Do not breastfeed while taking clofarabine.,You may experience nausea, vomiting, or diarrhea; your doctor can prescribe medications to manage these symptoms.

Safety Verification

Known Interactions

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE Risks3
Tipiracil + Pramipexole
moderate

"Tipiracil, a component of the combination chemotherapeutic agent Lonsurf (with trifluridine), inhibits thymidine phosphorylase and can also inhibit organic cation transporter 2 (OCT2). Pramipexole, a dopamine agonist used for Parkinson's disease and restless legs syndrome, is primarily eliminated renally via active tubular secretion mediated by OCT2. When coadministered, Tipiracil reduces the renal clearance of Pramipexole by inhibiting OCT2, leading to increased plasma concentrations of Pramipexole. This elevates the risk of dose-dependent adverse effects such as orthostatic hypotension, hallucinations, somnolence, and impulse control disorders."

Tipiracil + Prazosin
moderate

"Tipiracil inhibits thymidine phosphorylase, which is involved in the metabolism of prazosin, leading to reduced clearance and increased systemic exposure of prazosin. This can result in enhanced alpha-adrenergic blockade, causing profound hypotension, dizziness, and syncope, especially during initial dosing or dose escalation."

Tipiracil + Histamine
moderate

"The serum concentration of Histamine can be increased when it is combined with Tipiracil."

CLOFARABINE Risks3
Clofarabine + Eltrombopag
moderate

"Clofarabine, a purine nucleoside antimetabolite used in hematologic malignancies, may reduce the metabolism of Eltrombopag, a thrombopoietin receptor agonist, via inhibition of UDP-glucuronosyltransferase (UGT) enzymes, particularly UGT1A1 and UGT1A3. This leads to increased systemic exposure of Eltrombopag, potentially elevating the risk of hepatotoxicity (e.g., elevated liver enzymes) and other adverse effects such as thrombosis. Clinical outcomes may include exacerbated liver injury, which is particularly concerning in patients with pre-existing hepatic impairment or those receiving other hepatotoxic agents."

Clofarabine + Mecamylamine
moderate

"Concurrent use of clofarabine and mecamylamine may synergistically increase the risk of severe hypotension and syncope. Clofarabine is a purine nucleoside analog that can cause capillary leak syndrome and hypotension, while mecamylamine is a ganglionic blocker that inhibits sympathetic outflow, leading to orthostatic hypotension. The combined hypotensive effects may result in profound blood pressure reduction, dizziness, and potential falls, particularly in patients with impaired cardiovascular function."

Clofarabine + Nifedipine
moderate

"The combination of clofarabine and nifedipine may increase the risk of cardiotoxicity, particularly QT interval prolongation and left ventricular dysfunction. Clofarabine has been associated with pericardial effusion and cardiac tamponade, while nifedipine, a calcium channel blocker, can cause hypotension and reflex tachycardia, potentially compounding hemodynamic stress in patients with compromised cardiac function. Clinical outcomes may include arrhythmias, heart failure exacerbation, or sudden cardiac death, especially in patients with preexisting cardiovascular risk factors."

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Clinical Q&A

Frequently Asked Questions

Common clinical questions about TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE vs CLOFARABINE, answered by our medical review team.

1. What is the main difference between TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE?

TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE is a Antineoplastic Agent that works by Trifluridine is a thymidine-based nucleoside analog that incorporates into DNA, interfering with DNA synthesis and function. Tipiracil hydrochloride inhibits thymidine phosphorylase, preventing trifluridine degradation and increasing its systemic exposure.. CLOFARABINE is a Antineoplastic Agent that works by Clofarabine is a purine nucleoside antimetabolite that inhibits DNA synthesis by reducing intracellular deoxynucleotide triphosphate pools via inhibition of ribonucleotide reductase, and by terminating DNA chain elongation through incorporation into DNA, leading to apoptosis.. They differ in pharmacokinetic profiles, FDA-approved indications, and side effect profiles.

2. Which is stronger: TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE or CLOFARABINE?

Potency comparisons between TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE depend on the specific clinical indication. These are both Antineoplastic Agent agents and are not directly interchangeable by dose. A physician or clinical pharmacist should guide any therapeutic switching decisions.

3. What is the standard dosing for TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE vs CLOFARABINE?

The standard adult dose of TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE is: 35 mg/m² orally twice daily on days 1-5 and 8-12 of each 28-day cycle. Maximum dose: 80 mg per dose.. The standard adult dose of CLOFARABINE is: 52 mg/m^2 intravenously over 2 hours daily for 5 consecutive days, repeated every 28 days.. Dosing should always be individualized based on indication, renal and hepatic function, age, and other patient factors.

4. Can you take TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE together?

No direct drug-drug interaction has been formally documented between TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE in current clinical databases. However, individual patient risk factors including other medications, organ function, and comorbidities should always be evaluated by a qualified healthcare provider.

5. Are TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE and CLOFARABINE safe during pregnancy?

The maternal-fetal safety profiles differ. TIPIRACIL HYDROCHLORIDE AND TRIFLURIDINE is classified as Category C. Trifluridine/tipiracil is embryotoxic and teratogenic in animal studies. In humans, avoid use during pregnancy; effective contraception required during treatment and for at least 6. CLOFARABINE is classified as Category C. Clofarabine is embryotoxic and teratogenic in animal studies. In humans, it is classified as Pregnancy Category D. First trimester exposure is associated with major congenital malf. Always consult a maternal-fetal medicine specialist before taking either drug during pregnancy or lactation.