Flutamide interactions

Flutamide (Eulexin), an androgen has 40 documented interactions across the FDA labels and fact sheets we index: 3 major, 37 moderate, 0 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 (3)

  • CONTRAINDICATIONS: Precocious puberty, prostatic carcinoma or other androgen-dependent neoplasm, prior allergic reaction to HCG. (Chorionic gonadotropin label, Contraindications)

  • DoravirineantiretroviralMajor

    These drugs include, but are not limited to, the following: the anticonvulsants carbamazepine, oxcarbazepine, phenobarbital, phenytoin the androgen receptor inhibitor enzalutamide the antimycobacterials rifampin, rifapentine the cytotoxic agent mitotane St. (Doravirine label, Contraindications)

  • Finasteride5-alpha reductase inhibitorMajor

    Because of the ability of Type II 5α-reductase inhibitors to inhibit the conversion of testosterone to 5α-dihydrotestosterone (DHT), finasteride may cause abnormalities of the external genitalia of a male fetus of a pregnant female who receives finasteride. (Finasteride label, Contraindications)

Moderate interactions (37)

  • ApixabananticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • ArgatrobananticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • Articaine and epinephrinelocal anestheticModerate

    …nitroprusside, nitrous 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)

  • BivalirudinanticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • Bupivacaine and epinephrinelocal anestheticModerate

    …nitroprusside, nitrous 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

    …nitroprusside, nitrous 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)

  • PRECAUTIONS General Induction of androgen secretion by hCG may cause fluid retention. (Choriogonadotropin alfa label, Precautions)

  • Conjugated estrogensestrogenModerate

    Free hormone concentrations, such as testosterone and estradiol, may be decreased. (Conjugated estrogens label, Precautions)

  • Free hormone concentrations, such as testosterone and estradiol, may be decreased. (Conjugated estrogens and bazedoxifene label, Warnings and precautions)

  • DabigatrananticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • EdoxabananticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • EnoxaparinanticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • Free hormone concentrations, such as testosterone and estradiol, may be decreased. (Estradiol and norethindrone label, Warnings and precautions)

  • FludrocortisonecorticosteroidModerate

    Anabolic steroids (particularly C-17 alkylated androgens such as oxymetholone, methandrostenolone, norethandrolone, and similar compounds)—enhanced tendency toward edema. (Fludrocortisone label, Drug interactions)

  • FollitropinModerate

    For Men : Clinical monitoring for spermatogenesis utilizes the following indirect or direct measures: Serum testosterone level Semen analysis 5.11 FOLLISTIM Pen The FOLLISTIM Pen is intended only for use with FOLLISTIM AQ Cartridge. (Follitropin label, Warnings and precautions)

  • FondaparinuxanticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • GlimepiridesulfonylureaModerate

    …medications, pramlintide acetate, insulin, angiotensin converting enzyme (ACE) inhibitors, H 2 receptor antagonists, fibrates, propoxyphene, pentoxifylline, somatostatin analogs, anabolic steroids and androgens, cyclophosphamide, phenyramidol, guanethidine, fluconazole, sulfinpyrazone, tetracyclines, clarithromycin, disopyramide, quinolones, and those drugs… (Glimepiride label, Drug interactions)

  • GoserelinModerate

    Effect on QT/QTc Interval: Androgen deprivation therapy may prolong the QT interval. (Goserelin label, Warnings and precautions)

  • HeparinanticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • LeuprolideModerate

    Tumor Flare: Increased serum testosterone (~ 50% above baseline) may occur when initiating treatment with LUPRON DEPOT. (Leuprolide label, Warnings and precautions)

  • Levothyroxinethyroid hormoneModerate

    Androgens/Anabolic Steroids Asparaginase Glucocorticoids Slow-Release Nictonic Acid These drugs may decrease serum TBG concentration. (Levothyroxine label, Drug interactions)

  • Lidocaine and epinephrinelocal anestheticModerate

    …nitroprusside, nitrous 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

    …nitroprusside, nitrous 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,… (Lidocaine and prilocaine label, Drug interactions)

  • Liothyroninethyroid hormoneModerate

    Androgens/Anabolic Steroids Asparaginase Glucocorticoids Slow-Release Nicotinic Acid These drugs may decrease serum TBG concentration. (Liothyronine label, Drug interactions)

  • LovastatinstatinModerate

    However, clinical studies have shown that lovastatin does not reduce basal plasma cortisol concentration or impair adrenal reserve, and does not reduce basal plasma testosterone concentration. (Lovastatin label, Drug interactions)

  • MedroxyprogesteroneprogestinModerate

    The following laboratory tests may be affected by progestins including MPA Injectable Suspension, USP: (a) Plasma and urinary steroid levels are decreased (e.g., progesterone, estradiol, pregnanediol, testosterone, cortisol). (Medroxyprogesterone label, Drug interactions)

  • Mepivacainelocal anestheticModerate

    …oxide, nitrous 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)

  • Pioglitazone and glimepiridethiazolidinedioneModerate

    …anti-diabetic medications, pramlintide acetate, insulin, angiotensin converting enzyme (ACE) inhibitors, H2 receptor antagonists, fibrates, propoxyphene, pentoxifylline, somatostatin analogs, anabolic steroids and androgens, cyclophosphamide, phenyramidol, guanethidine, fluconazole, sulfinpyrazone, tetracyclines, clarithromycin, disopyramide, quinolones, and those drugs… (Pioglitazone and glimepiride label, Drug interactions)

  • Prilocaine and epinephrinelocal anestheticModerate

    …nitroprusside, nitrous 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)

  • Ramelteonsedative-hypnoticModerate

    Reproductive effects: Include decreased testosterone and increased prolactin levels. (Ramelteon label, Warnings and precautions)

  • RivaroxabananticoagulantModerate

    Therefore close monitoring of prothrombin time is recommended and adjustment of the anticoagulant dose may be necessary when Eulexin ® capsules are administered concomitantly with warfarin. (Flutamide label, Drug interactions)

  • Ropivacainelocal anestheticModerate

    …nitroprusside, nitrous 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)

  • Spironolactone and hydrochlorothiazidealdosterone antagonistModerate

    Abiraterone: Spironolactone binds to the androgen receptor and may increase prostate‑specific antigen (PSA) levels in abiraterone-treated prostate cancer patients. (Spironolactone and hydrochlorothiazide label, Drug interactions)

  • Tamoxifenselective estrogen receptor modulatorModerate

    Hypercalcemia in Patients with Metastatic Breast Cancer As with other additive hormonal therapy (estrogens and androgens), hypercalcemia has been reported in some breast cancer patients with bone metastases within a few weeks of starting treatment with tamoxifen. (Tamoxifen label, Warnings and precautions)

  • Tobacco and smokingTobacco and cannabisModerate

    In patients susceptible to aniline toxicity (e.g. persons with glucose-6-phosphate dehydrogenase deficiency, hemoglobin M disease and smokers), monitoring of methemoglobin levels should be considered. (Flutamide label, Warnings)

  • TriptorelinModerate

    Tumor Flare: Transient increase in serum testosterone levels can occur within the first few weeks of treatment. (Triptorelin label, Warnings and precautions)

  • WarfarinanticoagulantModerate

    Drug Interactions Increases in prothrombin time have been noted in patients receiving long-term warfarin therapy after Eulexin ® was initiated. (Flutamide label, Drug interactions)

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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.