Can I take 50 and Pregabalin together?
Drug interaction guide
Originally published 14 Mar 2026
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Taking 5-HTP and pregabalin together can make you feel very drowsy, dizzy, and confused. It may also increase the risk of a rare but serious condition called serotonin syndrome, which can cause shivering, sweating, a fast heartbeat, and muscle stiffness.
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Why this happens
Both substances affect the central nervous system. Pregabalin slows down brain activity, while 5-HTP increases serotonin levels. When used together, their sedative effects add up, and there is a theoretical risk that they could over-stimulate serotonin receptors in the brain.
What you should do
Back to contentsYou should speak to your doctor before taking 5-HTP with pregabalin. If you do take them together, avoid driving or operating machinery, as your coordination and reaction times will be significantly reduced. Seek medical help immediately if you experience high fever, agitation, or severe muscle twitching.
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Using other medicines
Back to contentsTaking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
14 Mar 2026 | Originally published

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