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Regestrone CR 15 mg Tablet is used to treat heavy, painful, or irregular periods, premenstrual syndrome (PMS), and endometriosis. Additionally, it may be used in the treatment of breast cancer. It contains Norethisterone, which works by restoring the hormone levels in the body. In some cases, this medicine may cause side effects such as unusual vaginal bleeding or spotting, dizziness, dry mouth, constipation, nausea, and diarrhoea. Let the doctor know if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.

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Written By Veda Maddala , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
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Drug-Drug Interactions

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NorethisteroneRifapentine
Severe

Drug-Drug Interactions

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How does the drug interact with Regestrone CR 15 mg Tablet:
Coadministration of Regestrone CR 15 mg Tablet with Topiramate can reduce the blood levels and effects of norethindrone in the body. This increases the risk of severe bleeding and unintended pregnancy.

How to manage the interaction:
Taking Regestrone CR 15 mg Tablet and topiramate together can result in an interaction; it can be taken if your doctor has advised it. However, if you notice any symptoms of abnormal bleeding, hot flashes or vaginal dryness, you should contact a doctor immediately. Do not stop using any medications without talking to a doctor.
NorethisteroneRifapentine
Severe
How does the drug interact with Regestrone CR 15 mg Tablet:
Combining Rifapentine and norethindrone reduces the blood levels and effects of norethindrone and increases the risk of bleeding and unintended pregnancy.

How to manage the interaction:
Although there is a possible interaction between Regestrone CR 15 mg Tablet and Rifapentine, you can take these medicines together if prescribed by your doctor. If you're having any of these symptoms like unexpected bleeding, abnormal bleeding, it's important to reach out to a doctor right away. Do not discontinue any medications without consulting a doctor.
How does the drug interact with Regestrone CR 15 mg Tablet:
Coadministration of Regestrone CR 15 mg Tablet and primidone can reduce the blood levels and effects of Regestrone CR 15 mg Tablet and increase the risk of bleeding.

How to manage the interaction:
Although there is an interaction between Regestrone CR 15 mg Tablet and Primidone, they can be taken together if prescribed by a doctor. However, if you experience abnormal bleeding, contact a doctor immediately. Do not discontinue any medications without consulting a doctor.
Severe
How does the drug interact with Regestrone CR 15 mg Tablet:
Using Felbamate and Regestrone CR 15 mg Tablet together can reduce the blood levels and effects of norethindrone.

How to manage the interaction:
There may be a possibility of interaction between Regestrone CR 15 mg Tablet and Felbamate, but it can be taken if prescribed by a doctor. If you notice any unusual symptoms like changes in your menstrual cycle, excessive bleeding, make sure to contact a doctor right away. Do not discontinue any medications without consulting a doctor.
How does the drug interact with Regestrone CR 15 mg Tablet:
Coadministration of Regestrone CR 15 mg Tablet with Tizanidine can cause drowsiness, confusion, slow heart rate, shallow breathing, feeling light-headed, fainting.

How to manage the interaction:
Taking Regestrone CR 15 mg Tablet with Tizanidine together can result in an interaction, but it can be taken if your doctor has advised it. However, if you notice any symptoms, you should contact a doctor immediately. Do not stop using any medications without talking to a doctor.
NorethisteroneFosamprenavir
Severe
How does the drug interact with Regestrone CR 15 mg Tablet:
Using norethindrone together with fosamprenavir may decrease the effects of fosamprenavir.

How to manage the interaction:
Taking Regestrone CR 15 mg Tablet with Fosamprenavir together can result in an interaction, but it can be taken if your doctor has advised it. If you're taking birth control and experiencing any symptoms, it's important to reach out to a doctor right away. They can recommend other options that won't interfere with your medication. Do not discontinue any medications without consulting a doctor.
How does the drug interact with Regestrone CR 15 mg Tablet:
Eslicarbazepine may reduce the effects of Regestrone CR 15 mg Tablet and its blood levels.

How to manage the interaction:
Although taking Eslicarbazepine and Regestrone CR 15 mg Tablet results in an interaction, they can be taken together if prescribed by your doctor. Do not stop using any medications without consulting a doctor.
How does the drug interact with Regestrone CR 15 mg Tablet:
Using tranexamic acid together with norethindrone may increase the risk of blood clots.

How to manage the interaction:
Taking Regestrone CR 15 mg Tablet with tranexamic acid can lead to an interaction, however, it can be taken only if a doctor has advised it. If you experience symptoms such as chest pain, shortness of breath, coughing up blood, blood in the urine, sudden loss of vision, and pain, redness, or swelling in your arm or leg, contact a doctor immediately .Do not discontinue any medications without consulting a doctor.
How does the drug interact with Regestrone CR 15 mg Tablet:
Coadministration of Regestrone CR 15 mg Tablet and Mycophenolic acid can decrease the levels and effects of Regestrone CR 15 mg Tablet.

How to manage the interaction:
There could be a possible interaction between Mycophenolic acid and Regestrone CR 15 mg Tablet, but they can be taken together if your doctor has prescribed them. However, if you experience hot flashes, vaginal dryness, or abnormal bleeding consult a doctor. Do not discontinue any medications without a doctor's advice.
NorethisteroneFosphenytoin
Severe
How does the drug interact with Regestrone CR 15 mg Tablet:
Coadministration of Regestrone CR 15 mg Tablet with Fosphenytoin can reduces the blood levels and effects of Regestrone CR 15 mg Tablet .

How to manage the interaction:
Taking Regestrone CR 15 mg Tablet with Fosphenytoin together can result in an interaction, but it can be taken if your doctor has advised it. If you experience symptoms of abnormal bleeding while using birth control, it's important to contact a doctor right away. Do not discontinue any medications without consulting a doctor.

Drug-Food Interactions

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No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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