Moderate Interaction
Be cautious with this combination
Adenosine (Adenocard) interacts with BLACK TEA
Black tea contains caffeine. The caffeine in black tea might block the effects of adenosine, which is used to do a test called a cardiac stress test. Stop drinking black tea or other caffeine-containing products at least 24 hours before a cardiac stress test.
Antibiotics (Quinolone antibiotics) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Some antibiotics might decrease how quickly the body breaks down caffeine. Taking these antibiotics along with black tea can increase the risk of side effects including jitteriness, headache, and increased heart rate.
Birth control pills (Contraceptive drugs) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Birth control pills can decrease how quickly the body breaks down caffeine. This might increase the risk for side effects from caffeine, such as jitteriness, headache, and fast heartbeat.
Cimetidine (Tagamet) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Cimetidine can decrease how quickly your body breaks down caffeine. Taking cimetidine along with black tea might increase the chance of caffeine side effects including jitteriness, headache, fast heartbeat, and others.
Clozapine (Clozaril) interacts with BLACK TEA
The body breaks down clozapine to get rid of it. The caffeine in black tea seems to decrease how quickly the body breaks down clozapine. Taking black tea along with clozapine may increase the effects and side effects of clozapine.
Dipyridamole (Persantine) interacts with BLACK TEA
Black tea contains caffeine. The caffeine in black tea might block the effects of dipyridamole. Dipyridamole is often used by doctors to do a test on the heart called a cardiac stress test. Stop drinking black tea or other caffeine-containing products at least 24 hours before a cardiac stress test.
Disulfiram (Antabuse) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Disulfiram can decrease how quickly the body gets rid of caffeine. Taking black tea along with disulfiram might increase the effects and side effects of caffeine including jitteriness, hyperactivity, irritability, and others.
Estrogens interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Estrogens can decrease how quickly the body breaks down caffeine. Taking estrogen and drinking black tea can increase the risk of side effects such as jitteriness, headache, and fast heartbeat.
Fluvoxamine (Luvox) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down caffeine to get rid of it. Fluvoxamine can decrease how quickly the body breaks down caffeine. Taking caffeine along with fluvoxamine might increase the effects and side effects of caffeine.
Lithium interacts with BLACK TEA
The caffeine in black tea can increase how quickly the body gets rid of lithium. If you consume black tea regularly and also take lithium, don't stop black tea suddenly. Instead, slowly reduce intake of black tea. Stopping caffeine too quickly can increase the side effects of lithium.
Medications for depression (MAOIs) interacts with BLACK TEA
Black tea contains caffeine. There is some concern that caffeine can interact with certain medications, called MAOIs. If caffeine is taken with these medications, it might increase the risk for serious side effects including fast heartbeat and very high blood pressure.
Some common MAOIs include phenelzine (Nardil), selegiline (Zelapar), and tranylcypromine (Parnate).
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs) interacts with BLACK TEA
Black tea might slow blood clotting. Taking black tea along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Pentobarbital (Nembutal) interacts with BLACK TEA
The stimulant effects of the caffeine in black tea can block the sleep-producing effects of pentobarbital.
Phenylpropanolamine interacts with BLACK TEA
The caffeine in black tea can stimulate the body. Phenylpropanolamine can also stimulate the body. Taking caffeine and phenylpropanolamine together might cause too much stimulation and increase heartbeat, blood pressure, and cause nervousness.
Riluzole (Rilutek) interacts with BLACK TEA
Drinking black tea might decrease how quickly the body breaks down riluzole and increase the effects and side effects of riluzole.
Stimulant drugs interacts with BLACK TEA
Stimulants, such as amphetamines and cocaine, speed up the nervous system. By speeding up the nervous system, stimulant medications can increase blood pressure and speed up the heartbeat. Black tea contains caffeine. Caffeine can also speed up the nervous system. Taking black tea along with stimulant drugs might cause serious problems including increased heart rate and high blood pressure.
Theophylline interacts with BLACK TEA
Black tea contains caffeine. Caffeine works similarly to theophylline. Caffeine can also decrease how quickly the body gets rid of theophylline. This might cause increased effects and side effects of theophylline.
Verapamil (Calan, others) interacts with BLACK TEA
Verapamil can decrease how quickly the body gets rid of caffeine. Drinking black tea and taking verapamil can increase the risk of side effects for caffeine including jitteriness, headache, and an increased heartbeat.
Warfarin (Coumadin) interacts with BLACK TEA
Warfarin is used to slow blood clotting. Large amounts of black tea might decrease the effects of warfarin. This might increase the risk of clotting. Be sure to have your blood checked regularly. The dose of your warfarin might need to be changed.
Medications for asthma (Beta-adrenergic agonists) interacts with BLACK TEA
Black tea contains caffeine. Caffeine can stimulate the heart. Some medications for asthma can also stimulate the heart. Taking caffeine with some medications for asthma might cause too much stimulation and cause heart problems.
Carbamazepine (Tegretol) interacts with BLACK TEA
Black tea contains caffeine. Caffeine can decrease the effects of carbamazepine. Taking black tea with carbamazepine might decrease the effects of carbamazepine and increase the risk of seizures in some people.
Ethosuximide (Zarontin) interacts with BLACK TEA
Ethosuximide is a drug used to treat seizures. Caffeine in black tea can decrease the effects of ethosuximide. Taking black tea with ethosuximide might decrease the effects of ethosuximide and increase the risk of seizures in some people.
FELBAMATE (Felbatol) interacts with BLACK TEA
Felbamate is a drug used to treat seizures. Caffeine in black tea can decrease the effects of felbamate. Taking black tea with felbamate might decrease the effects of felbamate and increase the risk of seizures in some people.
Flutamide (Eulexin) interacts with BLACK TEA
The body breaks down flutamide to get rid of it. Caffeine in black tea might decrease how quickly the body gets rid of flutamide. This could increase the levels of flutamide in the body and increase the risk of side effects.
Medications that decrease break down of other medications by the liver (Cytochrome P450 CYP1A2 (CYP1A2) inhibitors) interacts with BLACK TEA
Black tea is changed and broken down by the liver. Some drugs decrease how quickly the liver changes and breaks down black tea. This could change the effects and side effects of black tea.
Nicotine interacts with BLACK TEA
Black tea contains caffeine. Caffeine can stimulate the heart. Nicotine can also stimulate the heart. Taking caffeine with nicotine might cause too much stimulation and cause heart problems, such as increased heart rate or blood pressure.
Phenobarbital (Luminal) interacts with BLACK TEA
Phenobarbital is a drug used to treat seizures. Caffeine in black tea might decrease the effects of phenobarbital and increase the risk of seizures in some people.
Phenytoin (Dilantin) interacts with BLACK TEA
Phenytoin is a drug used to treat seizures. Caffeine in black tea can decrease the effects of phenytoin. Taking black tea with phenytoin might decrease the effects of phenytoin and increase the risk of seizures in some people.
Valproate interacts with BLACK TEA
Valproate is a drug used to treat seizures. Caffeine in black tea might decrease the effects of valproate and increase the risk of seizures in some people.
Water pills (Diuretic drugs) interacts with BLACK TEA
Black tea contains caffeine. Caffeine, especially in large amounts, can reduce potassium levels in the body. "Water pills" can also decrease potassium levels in the body. Taking large amounts of caffeine along with "water pills" might decrease potassium levels too much.
Medications moved by pumps in cells (Organic anion-transporting polypeptide substrates) interacts with BLACK TEA
Some medications are moved in and out of cells by pumps. Black tea might change how these pumps work and change how much medication stays in the body. In some cases, this might change the effects and side effects of a medication.
Rosuvastatin (Crestor) interacts with BLACK TEA
Black tea might decrease how much rosuvastatin the body absorbs. Taking black tea along with rosuvastatin might decrease the effects of rosuvastatin.
Pioglitazone (Actos) interacts with BLACK TEA
Caffeine in black tea might increase the amount of pioglitazone that the body absorbs. Drinking black tea might increase the effects and adverse effects of pioglitazone.
Minor Interaction
Be watchful with this combination
Alcohol (Ethanol) interacts with BLACK TEA
Black tea contains caffeine. The body breaks down the caffeine in black tea to get rid of it. Alcohol can decrease how quickly the body breaks down caffeine. Taking black tea along with alcohol might increase the risk of caffeine side effects such as jitteriness, headache, and fast heartbeat.
Fluconazole (Diflucan) interacts with BLACK TEA
Black tea contains caffeine. Fluconazole might decrease how quickly the body gets rid of caffeine. This could increase the levels of caffeine in the body and increase the risk of side effects such as nervousness, anxiety, and insomnia.
Medications for depression (Tricyclic antidepressants) interacts with BLACK TEA
Black tea contains chemicals called tannins. Tannins can bind to many medications, including tricyclic antidepressants, and decrease how much medicine the body absorbs. To avoid this interaction, avoid black tea 1 hour before and 2 hours after taking tricyclic antidepressants.
Medications for diabetes (Antidiabetes drugs) interacts with BLACK TEA
Black tea contains caffeine. Caffeine can either increase or decrease blood sugar. Diabetes medications are used to lower blood sugar. Taking some medications for diabetes along with caffeine might change the effects of the diabetes medications. Monitor your blood sugar closely. The dose of your diabetes medication might need to be changed.
Mexiletine (Mexitil) interacts with BLACK TEA
Black tea contains caffeine. Mexiletine can decrease how quickly the body breaks down caffeine. Taking mexiletine along with black tea might increase the side effects of caffeine.
Phenothiazines interacts with BLACK TEA
Black tea contains chemicals called tannins. Tannins can bind to many medications, including phenothiazines, and decrease how much medicine the body absorbs. To avoid this interaction, avoid black tea one hour before and two hours after taking phenothiazine medications. There is also a concern that phenothiazines might reduce the breakdown of caffeine. This might increase levels of caffeine in the body and increase the risk of caffeine side effects.
Terbinafine (Lamisil) interacts with BLACK TEA
Black tea contains caffeine. Terbinafine can decrease how quickly the body gets rid of caffeine. Taking terbinafine with black tea might increase the risk of side effects, such as jitteriness, headache, and increased heartbeat.
METFORMIN (Glucophage) interacts with BLACK TEA
Black tea contains caffeine. Metformin can decrease how quickly the body breaks down caffeine. Taking black tea along with metformin might increase the effects and side effects of caffeine.
Methoxsalen (Oxsoralen) interacts with BLACK TEA
Black tea contains caffeine. Methoxsalen can decrease how quickly the body breaks down caffeine. Taking caffeine along with methoxsalen might increase the effects and side effects of caffeine.
Tiagabine (Gabitril) interacts with BLACK TEA
Black tea contains caffeine. Taking caffeine over a long time period along with tiagabine can increase the amount of tiagabine in the body. This might increase the side effects of tiagabine.
Ticlopidine (Ticlid) interacts with BLACK TEA
Ticlopidine can decrease how quickly the body gets rid of caffeine. Taking black tea along with ticlopidine might increase the effects and side effects of caffeine, including jitteriness, hyperactivity, irritability, and others.
Flurbiprofen (Ansaid, others) interacts with BLACK TEA
There has been some concern that black tea might reduce the breakdown of flurbiprofen. But this does not seem to occur in humans.
