Can I take Amitriptyline and Docusate together?
Drug interaction guide
Originally published 12 May 2026
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Amitriptyline can cause constipation as a side effect. Docusate is a stool softener used to treat constipation. There is no harmful interaction between these two medicines; in fact, docusate is often used to manage the side effects caused by amitriptyline.
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Why this happens
Amitriptyline has 'anticholinergic' effects, which means it slows down the movement of the digestive system, leading to hard stools. Docusate works by allowing water and fats to enter the stool, making it softer and easier to pass. They work in opposite ways on the bowel but do not interfere with how the other is absorbed or processed by the body.
What you should do
Back to contentsIt is safe to take these medicines together. If you are taking amitriptyline and find you are frequently constipated, ensure you also drink plenty of water and eat high-fibre foods. Speak to your pharmacist or doctor if the constipation does not improve with docusate.
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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.
12 May 2026 | Originally published

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