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Dr. Andrew Rynne

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What causes weight loss while on Trazadone?

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Internal Medicine Specialist
Practicing since : 2004
Answered : 1459 Questions
Question
I have just started a phentermine/topamax combo for weight loss, very low dose. First day, having serious insomnia, so just took a 50 mg trazadone. Is there danger of an interaction?
Mon, 7 May 2018 in Medicines and Side Effects
 
 
Answered by Dr. Salah Saad Shoman 1 hour later
Brief Answer:
Moderate interaction

Detailed Answer:
Dear Ma'am, I have gone through your question and I understand your concerns but these medications have moderate interactions together as using trazodone together with topamax may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially above the age of 60 may also experience impairment in thinking, judgment, and motor coordination. You should avoid or limit the use of alcohol while being treated with these medications. Also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medications affect you

Topamax may also increase the blood levels and effects of phentermine. you may need dose adjustement of phentermine while using it with topamax.. you should seek medical care if you experience increased side effects such as dizziness, restlessness, insomnia, tremor, headache, mood changes, palpitation, rapid heart beat, or blood pressure elevation.
However, since you have taken them about 17 hours apart then it is expected that about 40-60% of the phentermine / topamax were cleared out of your system .. it is not expected that you experience major side effects .. I hope you find this helpful
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