Hydroxyurea interactions

Hydroxyurea (Hydrea, Droxia, Siklos), an antimetabolite has 48 documented interactions across the FDA labels and fact sheets we index: 29 major, 17 moderate, 2 minor, and 0 where a label reports no significant interaction. Each entry below quotes the sentence behind it. This drug page is a starting point, not a verdict for your situation.

Interactions from the label

Major interactions (29)

  • AbacavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Abacavir and lamivudineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • AtazanavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • CabotegravirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • DarunavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Darunavir and cobicistatantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • DolutegravirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • DoravirineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • EfavirenzantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • EmtricitabineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Emtricitabine and tenofovirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • EtravirineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • FosamprenavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • LamivudineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Lamivudine and zidovudineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • LenacapavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • Lopinavir and ritonavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • MaravirocantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • NevirapineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • RaltegravirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • RilpivirineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • RitonavirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • TenofovirantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • TretinoinretinoidMajor

    • Leukocytosis: Consider administering cytoreductive chemotherapy (including an anthracycline if not contraindicated or hydroxyurea) with tretinoin capsules in the setting of leukocytosis, as clinically indicated. (Tretinoin label, Warnings and precautions)

  • ZidovudineantiretroviralMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

Moderate interactions (17)

  • Articaine and epinephrinelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants phenobarbital,… (Articaine and epinephrine label, Drug interactions)

  • Bupivacaine and epinephrinelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants phenobarbital,… (Bupivacaine and epinephrine label, Drug interactions)

  • Chloroprocainelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants Phenobarbital,… (Chloroprocaine label, Precautions)

  • GanciclovirantiviralModerate

    Other drugs associated with myelosuppression or nephrotoxicity (e.g., dapsone, doxorubicin, flucytosine, hydroxyurea, pentamidine, tacrolimus, trimethoprim/ sulfamethoxazole, vinblastine, vincristine and zidovudine) Unknown Because of potential for higher toxicity, coadministration with Ganciclovir should be considered only if the potential benefits are judged… (Ganciclovir label, Drug interactions)

  • Insulin aspartinsulinModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Insulin degludecinsulinModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Insulin detemirinsulinModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Insulin glargineinsulinModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Insulin lisproinsulinModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • Lidocaine and epinephrinelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, isofamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants phenobarbital,… (Lidocaine and epinephrine label, Drug interactions)

  • Lidocaine and prilocainelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, isofamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sufonamides Antimalarials chloroquine, primaquine Anticonvulsants Phenobarbital, phenytoin,… (Lidocaine and prilocaine label, Drug interactions)

  • Mepivacainelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants phenobarbital,… (Mepivacaine label, Drug interactions)

  • Prilocaine and epinephrinelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic Agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants phenobarbital,… (Prilocaine and epinephrine label, Drug interactions)

  • Ropivacainelocal anestheticModerate

    …oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics dapsone, nitrofurantoin, para-aminosalicylic acid, sulfonamides Antimalarials chloroquine, primaquine Anticonvulsants Phenobarbital,… (Ropivacaine label, Drug interactions)

  • TirzepatideGLP-1 receptor agonistModerate

    Hydroxyurea may falsely elevate sensor glucose results from certain continuous glucose monitoring (CGM) systems and may lead to hypoglycemia if sensor glucose results are relied upon to dose insulin. (Hydroxyurea label, Warnings and precautions)

  • ValganciclovirantiviralModerate

    Other drugs associated with myelosuppression or nephrotoxicity (e.g., adriamycin, dapsone, doxorubicin, flucytosine, hydroxyurea, pentamidine, tacrolimus, trimethoprim/ sulfamethoxazole, vinblastine, vincristine, and zidovudine) Unknown Because of potential for higher toxicity, coadministration with valganciclovir hydrochloride should be considered only if the… (Valganciclovir label, Drug interactions)

Minor mentions (2)

  • Folic acid (folate)Vitamin and mineralMinor

    The morphologic change resembles pernicious anemia, but is not related to vitamin B12 or folic acid deficiency. (Hydroxyurea label, Warnings and precautions)

  • Vitamin B12Vitamin and mineralMinor

    The morphologic change resembles pernicious anemia, but is not related to vitamin B12 or folic acid deficiency. (Hydroxyurea label, Warnings and precautions)

Check Hydroxyurea against everything you take. Add your full list; every pair is checked at once.

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Not medical advice. Severity reflects the label's wording, not your circumstances. A "major" flag can be routine under supervision and a "minor" one can matter at high doses. Ask a pharmacist.