Does venlafaxine cause bloating? (3+ managing tips)

In this article, we will discuss whether venlafaxine (Effexor) can cause bloating or not. We will also highlight some research studies and management approaches for bloating while taking venlafaxine.

Does venlafaxine cause bloating?

Yes, bloating is one of the potential side effects of venlafaxine. Bloating is also caused by other medications belonging to the class of venlafaxine i.e. serotonin and norepinephrine reuptake inhibitors (SNRI). 

Venlafaxine is an approved medication for the treatment of depression, cataplexy and social anxiety disorder. Gastrointestinal side effects have been highly reported by the use of this medication. (1)

In case the symptoms persist for a longer period, the healthcare provider needs to be consulted. They can identify and provide a knowledgeable solution for the problem.

What is the connection between venlafaxine and bloating?

The exact mechanism of how venlafaxine causes bloating or other gastrointestinal side effects such as abdominal pain and diarrhoea is not known. The occurrence of side effects also varies on a case-by-case basis.

The specific biological mechanism is not explained in scientific literature. There is a possibility that it can alter gastrointestinal motility, which in turn can lead to altering how the stomach and intestines process and move food.

What does research suggest?

According to the trials conducted on Effexor XR capsules, which consist of fluvoxamine as an active ingredient, 30% of the patients reported nausea as a side effect. Although no direct research is available on bloating, a bloated stomach occurs when the stomach/intestines a filled with air/gas which can lead to physical discomfort, nausea or poor appetite. 

The drug label information of Effexor tablets highlighted that in a placebo-controlled trial, 37% (n=1033) experienced nausea, 11% (n=1033) experienced anorexia, 5% (n=1033) experienced dyspepsia, and 3% (n=1033) experienced flatulence. 

More research needs to be conducted to find the percentage of the population that is being affected by bloating or is reporting bloating as one of the symptoms of fluvoxamine. 

How can bloating caused by venlafaxine be managed?

In case the side effect of bloating caused by venlafaxine persists consider talking to your healthcare provider. They can provide a better solution depending on the individual situation. Apart from that, certain changes can be considered for the management of bloating. 

Dietary modifications

  • Fibre: Incorporate fibre-rich foods such as whole grains (beans, lentils), fruits (apples, avocados) and vegetables (broccoli, artichokes) in the diet.  
  • Meal proportion: Instead of having three big meals a day, make a habit of eating four to five times a day. Eating big meals can cause bloating.
  • Probiotics: Incorporate probiotics within the dietary regimen. Foods such as yoghurt promote the growth of healthy bacteria in the intestines. This can result in the reduction of gastrointestinal discomfort.
  • Chew the food: Eat the food slowly and chew it properly to aid digestion. 
  • Avoid air intake: Do not use straws and carbonated drinks as excess air from the outside can cause gas and bloating.
  • Monitor intolerant food: Identify the food that is intolerant by your stomach. Some foods can lead to excessive bloating and gas production in some individuals.

Over-the-counter (OTC) medication

Some over-the-counter medications and dietary supplements are available such as Simethicone, Pepto-Bismol,  and Beano. It is recommended to consult healthcare professionals before using any medication to prevent any potential drug interactions or side effects.

Exercise

Keeping oneself physically active can help the bowel to be in movement and prevent bloating.

Management of stress and anxiety

Stress, anxiety and depression all are known to cause gastrointestinal symptoms such as bloating. Management of stress and anxiety through meditation and yoga or dealing with them by getting professional help can help overcome gastrointestinal issues.

When to seek medical advice?

The symptom of bloating is not a serious side effect but it can be bothersome and affect the quality of life. Healthcare should be involved in any medication-related side effects. They can offer personalised plans and solutions for the concerns depending on the individual’s situation.

Consult healthcare providers in the following cases:

Persistent symptom: If the bloating is persistent and severe, seek medical care.

Recurring symptom: If bloating is recurring and chronic, it is better to seek medical attention to find the root cause of the problem.

Associated symptoms: If bloating is accompanied by other symptoms such as blood in urine or stool, unexplained weight loss, diarrhoea and constipation then a healthcare professional needs to be consulted.

General concern: If bloating is a general concern and is having an impact on the quality of life, it is better to be open to your healthcare professional so they can provide you with the appropriate solution.

What are the other side effects associated with venlafaxine?

Some of the common side effects that are associated with venlafaxine are listed below:

  • Dry mouth
  • Nausea
  • Headaches
  • Sweating
  • Dry mouth
  • Insomnia
  • Feeling of dizziness
  • Constipation

Are there alternatives to venlafaxine that do not cause bloating?

Yes, alternative options to venlafaxine are available. The side effects of bloating can occur with some medications but it also depends on a case-by-case basis. In case bloating is an issue, the healthcare provider will explore alternative options by switching to a different drug class or opting for a different drug within the same class. They can also look into the option of dose adjustment for the patient.

Some of the alternatives for venlafaxine that do not cause bloating are listed below:

  • Desvenlafaxine (Pristiq): It belongs to the class of serotonin and norepinephrine reuptake inhibitor (SNRI) and is indicated for anxiety and depression.
  • Duloxetine (Cymbalta): It belongs to the class of serotonin and norepinephrine reuptake inhibitor (SNRI) and is considered a metabolite of venlafaxine. It is indicated for the treatment of major depressive disorder.

Conclusion

In my opinion, bloating is one of the common side effects of venlafaxine. A list of management techniques for bloating has been listed but in case the bloating persists it is always recommended to involve a healthcare professional. They can evaluate the cause of bloating and adjust the treatment regimen according to the individual’s situation.

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References

1.-

ngh D, Saadabadi A. Venlafaxine. [Updated 2022 Oct 10]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK535363/ 

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