Drug Interactions between cyclosporine and toremifene

Grapefruit and grapefruit juice can increase the levels of cycloSPORINE in your body and should generally not be consumed during treatment. High blood levels of cycloSPORINE can lead to increased risk of serious side effects on kidney, liver, and nervous system functions. If you regularly consume grapefruits or grapefruit juice, you should be monitored for side effects and/or changes in cycloSPORINE levels. However, do not increase or decrease the amount of grapefruit products in your diet without first talking to your doctor. You should also take cycloSPORINE on a consistent schedule with regard to time of day and relation to meals. Let your doctor know if you experience fever, rash, nausea, vomiting, abdominal pain, loss of appetite, dark urine, jaundice (yellowing of the skin or eyes), decreased urination, excessive thirst, swelling, weight gain, dizziness, fatigue, weakness, headache, blurred vision, numbness/burning/tingling in the hand and feet, tremors, or convulsions, as they may be symptoms caused by excessive effects of cycloSPORINE.

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You should avoid drinking grapefruit juice during treatment with toremifene. Grapefruit juice may increase the blood levels of toremifene. This can make you more likely to develop side effects such as vaginal bleeding, blood clots, or an irregular heart rhythm that may be serious or life-threatening. Contact your doctor if you experience potential signs and symptoms of blood clots such as chest pain, shortness of breath, sudden loss of vision, and pain, redness or swelling your arms or legs. You should also seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, or fast or pounding heartbeats during treatment with toremifene.

Talk to your doctor before using toremifene with soy products. There is some evidence that substances present in soy may stimulate breast tumor growth and interfere with the action of toremifene, although this has not been proven. Whether soy products are effective for hot flashes is also uncertain. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

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