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Suggest Dosage Of Effexor And Pristiq

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Posted on Mon, 10 Aug 2015
Question: is ot ok to go straight from 375 mg of effexor to 100 mg of pristiq ? my doctor told me to do this but i feel dizzy and kind of nautious today last night i started the switch. or is there a better way to do it ?
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Answered by Dr. Seikhoo Bishnoi (53 minutes later)
Brief Answer:
These symptoms will last for few days only

Detailed Answer:
Hello, Welcome to Health Care Magic

I can understand your concern. Effxor is Venlafaxine and Prostiq is Descenlafaxine. Both drugs belong to same SNRI group of drugs. If we consider rough dose equivalence then 50 mg of Pristiq equals to 300 mg of Effexor. These are rough estimates and are not validated by studies. So you have been given right amount of dose of Pristiq. Even if we shift from one drug to another slight withdrawal like symptoms can occur. The nauseating feeling, dizziness is probably due to this shift only. These symptoms will decrease by own in about a week. For nausea any OTC antacid or Ranitidine can help. Low dose benzodiazepines like Clonazepam or Etizolam can even help to reduce the symptoms and you will feel better. Talk to your doctor regarding this, no need to worry these symptoms will reduce in severity in some time.

Thanks, Hope this helps you, if you have more doubts you can ask again. Take care
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Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Seikhoo Bishnoi

Psychiatrist

Practicing since :2007

Answered : 5193 Questions

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Suggest Dosage Of Effexor And Pristiq

Brief Answer: These symptoms will last for few days only Detailed Answer: Hello, Welcome to Health Care Magic I can understand your concern. Effxor is Venlafaxine and Prostiq is Descenlafaxine. Both drugs belong to same SNRI group of drugs. If we consider rough dose equivalence then 50 mg of Pristiq equals to 300 mg of Effexor. These are rough estimates and are not validated by studies. So you have been given right amount of dose of Pristiq. Even if we shift from one drug to another slight withdrawal like symptoms can occur. The nauseating feeling, dizziness is probably due to this shift only. These symptoms will decrease by own in about a week. For nausea any OTC antacid or Ranitidine can help. Low dose benzodiazepines like Clonazepam or Etizolam can even help to reduce the symptoms and you will feel better. Talk to your doctor regarding this, no need to worry these symptoms will reduce in severity in some time. Thanks, Hope this helps you, if you have more doubts you can ask again. Take care