Severe Constipation After Switching to 60MG Quetiapine: What to Do? - Psychiatry

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Recently, I switched medications and started taking 60 mg of Cymbalta (duloxetine) once in the morning and once in the evening, but I have developed severe constipation?


Recently, I switched my medication to take 60 mg of Cymbalta (duloxetine) once in the morning and once at night, but I have developed severe constipation.
Despite taking stool softeners, I am still unable to have a bowel movement and need to use enemas to relieve constipation.
I eat a lot of green vegetables and drink yogurt.
What should I do?

GEO, 30~39 year old female. Ask Date: 2007/12/14

Dr. Lin Yuzhong reply Psychiatry


Hello Mr.
Geo: Although the Chia-Nan Psychiatric Hospital where I work does not use Duloxetine as an antidepressant, and I currently lack clinical experience with its use, clinical studies indicate that Duloxetine does have a higher likelihood of gastrointestinal side effects, including nausea, vomiting, diarrhea, and constipation.
There is currently no antidepressant that guarantees the absence of side effects, but choices can be made based on each individual's bodily responses.
Given the current situation, I recommend discussing with your physician the option of using different stool softeners or combining several stool softeners or gastrointestinal motility agents.
Additionally, aside from the methods you have chosen, increasing water intake and engaging in lower limb exercises can also enhance bowel regularity.
If the results are still unsatisfactory, you may further discuss with your physician the possibility of switching to another antidepressant.
There are many types of antidepressants available, and it should be possible to find the medication that is most suitable for you.

Reply Date: 2007/12/14

More Info


Severe constipation is a common side effect associated with the use of quetiapine, especially at higher doses such as 60 mg. Quetiapine, an atypical antipsychotic, can affect the gastrointestinal system by slowing down gut motility, leading to constipation. This side effect can be particularly distressing, as it not only causes discomfort but can also lead to more serious complications if not addressed properly.

Given your situation, where you have already tried softeners and increased your intake of fiber-rich foods like green vegetables and yogurt without relief, it is crucial to take further steps to manage this issue. Here are some recommendations:
1. Consult Your Prescribing Physician: The first and most important step is to discuss your symptoms with the healthcare provider who prescribed quetiapine. They may consider adjusting your dosage or switching you to a different medication that has a lower risk of causing constipation. It’s essential to communicate openly about the severity of your symptoms.

2. Medication Review: Sometimes, the combination of medications can exacerbate side effects. If you are taking other medications alongside quetiapine, your doctor may review these to see if any could be contributing to your constipation.

3. Laxatives and Stool Softeners: While you mentioned using softeners, it may be beneficial to discuss with your doctor the possibility of using stronger laxatives or a different class of laxatives. Osmotic laxatives, such as polyethylene glycol (MiraLAX), or stimulant laxatives, such as bisacodyl (Dulcolax), may be more effective in your case. However, these should only be used under medical supervision.

4. Hydration: Ensure you are drinking plenty of fluids, as dehydration can worsen constipation. Aim for at least 8-10 glasses of water a day, unless otherwise directed by your physician.

5. Physical Activity: Engaging in regular physical activity can help stimulate bowel movements. Even light exercises, such as walking, can be beneficial.

6. Dietary Adjustments: While you are already consuming green vegetables, consider incorporating other high-fiber foods such as fruits (especially prunes), whole grains, and legumes. Sometimes, a sudden increase in fiber can lead to bloating, so it’s essential to increase fiber intake gradually.

7. Probiotics: Some individuals find that probiotics can help with digestive health. You might consider discussing the addition of a probiotic supplement with your healthcare provider.

8. Avoiding Certain Foods: Some foods can exacerbate constipation, such as dairy products, processed foods, and red meat. Monitoring your diet for any foods that may contribute to your symptoms can be helpful.

9. Enemas: While you mentioned using enemas, it’s important to use them judiciously. Frequent use can lead to dependency, where your bowel becomes reliant on them for function. Discuss this with your doctor to ensure it’s safe for you.

10. Follow-Up: Regular follow-up appointments with your healthcare provider are crucial to monitor your condition and adjust treatment as necessary. If constipation persists despite these interventions, further evaluation may be warranted to rule out other underlying conditions.

In summary, severe constipation after switching to quetiapine can be a challenging side effect to manage. It is essential to communicate with your healthcare provider about your symptoms and explore potential adjustments to your treatment plan. With the right approach, you can find relief and improve your overall quality of life.

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