Dr. Kumarshri Shriniwas Saraswat
M.B.B.S., D.P.M., MEMBER OF INDIAN PSYCHIATRIC SOCIETY., SPECIALIST IN MOOD AND ANXIETY DISORDERS
Psychiatry, Psychologist/ Counsellor, Psychotherapy, Sexology, Sleep Medicine
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The heightened anxiety, panic attacks, uneasiness, hot or cold flushes, sleep disturbance, low grade fever could all be the symptoms of Venlafaxine withdrawal. Did you miss a dose of Venlafaxine?
Another explanation is that these medicines that you are taking for your tooth issue interacted with Venlafaxine, thereby reducing its effect. Though, there is no reported interaction between these medicines, individual differences in metabolism are common and could be a cause in your case.
My advice for you would be not to jump to the conclusion that Venlafaxine has stopped working. Take higher doses of Ativan, even up to 2 mg thrice a day if required for the next few days.
Wait till the other drugs are out of your system that is for three to four days and check whether the anxiety disappears on its own or not.
The most obvious remedy would be to increase the dose of Venlafaxine by 37.5 mg and watch. Since we are not sure of the interaction yet, you could rather wait for a few days. If you can do a plasma drug level test of Venlafaxine, that would be great.
Another thing to do would be an ECG and rule out QT interval prolongation by medicines, unlikely but better to rule out.
In the worst scenario, if Venlafaxine has stopped working at 75 mg then you would be increasing the dose of Venlafaxine, but not looking for alternatives.
For further information consult a psychiatrist online --> https://www.icliniq.com/ask-a-doctor-online/psychiatrist