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Does Prozac Interact With Perphenazine, Gabapentin And L-Theanine?

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Posted on Tue, 12 Apr 2016
Question: Hi, I am on prozac 40mg and Perphenazine 2mg. Can I take Gaba, ltheanine and 5htp?
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Answered by Dr. Alexander H. Sheppe (16 minutes later)
Brief Answer:
Consultation

Detailed Answer:
Hello, and thanks very much for your question.

Let me break this down by neurotransmitter, as I think this is the easiest way to explain the potential interactions here.

Prozac is an SSRI, and increases serotonin in the brain.

Perphenazine is a neuroleptic, and decreases dopamine in the brain.

Gabapentin acts at GABA receptors in the brain.

L-theanine increases serotonin in the brain, and therefore could interact with Prozac leading to increased serotonin in the brain and potentially cause serotonin syndrome, a dangerous condition that requires hospitalization.

5-HTP increases serotonin in the brain, and just like L-theanine could interact with Prozac leading to increased serotonin in the brain and potentially cause serotonin syndrome as described above.

Therefore, it would be safe to take Prozac + Perphenazine + Gabapentin, but I would avoid L-theanine and 5-HTP. This is actually okay, because large randomized controlled trials have never shown either L-theanine or 5-HTP to be any more effective than placebo.

Please remember to rate and close this answer if satisfied.

In the future, for continuity of care, I encourage you to contact me at my private link below. After you ask a direct question it would be my pleasure to be your dedicated personal physician on this website. My name is Dr. Sheppe, and I am an XXXXXXX doctor working in New York City at NewYork-Presbyterian Hospital, ranked #1 for Psychiatry in the United States (tinyurl.com/psyrank). For a personalized comprehensive evaluation, treatment recommendations, and individual therapy, ask me at HealthCareMagic at this private link: tinyurl.com/DrSheppeAnswers
Note: For further guidance on mental health, Click here.

Above answer was peer-reviewed by : Dr. Prasad
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Answered by
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Dr. Alexander H. Sheppe

Psychiatrist

Practicing since :2014

Answered : 2236 Questions

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Does Prozac Interact With Perphenazine, Gabapentin And L-Theanine?

Brief Answer: Consultation Detailed Answer: Hello, and thanks very much for your question. Let me break this down by neurotransmitter, as I think this is the easiest way to explain the potential interactions here. Prozac is an SSRI, and increases serotonin in the brain. Perphenazine is a neuroleptic, and decreases dopamine in the brain. Gabapentin acts at GABA receptors in the brain. L-theanine increases serotonin in the brain, and therefore could interact with Prozac leading to increased serotonin in the brain and potentially cause serotonin syndrome, a dangerous condition that requires hospitalization. 5-HTP increases serotonin in the brain, and just like L-theanine could interact with Prozac leading to increased serotonin in the brain and potentially cause serotonin syndrome as described above. Therefore, it would be safe to take Prozac + Perphenazine + Gabapentin, but I would avoid L-theanine and 5-HTP. This is actually okay, because large randomized controlled trials have never shown either L-theanine or 5-HTP to be any more effective than placebo. Please remember to rate and close this answer if satisfied. In the future, for continuity of care, I encourage you to contact me at my private link below. After you ask a direct question it would be my pleasure to be your dedicated personal physician on this website. My name is Dr. Sheppe, and I am an XXXXXXX doctor working in New York City at NewYork-Presbyterian Hospital, ranked #1 for Psychiatry in the United States (tinyurl.com/psyrank). For a personalized comprehensive evaluation, treatment recommendations, and individual therapy, ask me at HealthCareMagic at this private link: tinyurl.com/DrSheppeAnswers