Does a missed dose of Effexor cause nightmares? 

Does a missed dose of Effexor cause nightmares?  

A missed Effexor dose may cause nightmares. Nightmares or violent, vivid, and unusual dreams are common with antidepressants, even if you don’t miss a dose. 

Antidepressants like Effexor can alter your brain chemistry and change the way your brain responds to things (1). They can also alter your sleep architecture, which may result in unusual dreams or nightmares.

A majority of people experience these nightmares even if they don’t miss a dose. People who don’t commonly experience nightmares may report them after missing a dose. 

Antidepressants make your brain dependent on them with time, especially if you have been using them for a long period of time. This can trigger weird dreams about missing a dose. It’s always in your best interest to never skip your Effexor dose. 

If you find it difficult to remember and you often get too busy and lose track of time, try setting a daily reminder. This will alert you every day when it’s time to take your Effexor and prevent you from missing a dose. 

If you’re concerned about any side effects and skip taking Effexor for some relief, this is not the right way to deal with such a condition (1,2). Always make sure to report your side effects to your healthcare provider and follow your doctor’s directions. 

Antidepressants are not supposed to be taken intermittently and should be properly used to make the most out of them. 

If, for some reason, your current antidepressant does not suit you, talk to your doctor. He/she will switch you to another antidepressant properly. Don’t ever make such changes on your own. 

What are the dangers associated with skipping Effexor doses?

Skipping doses of Effexor can have several potential dangers and risks. Effexor is an antidepressant medication that affects the balance of certain chemicals in the brain. 

When doses are missed or discontinued abruptly, it can disrupt the balance of these chemicals and lead to various issues. Here are some of the dangers associated with skipping Effexor doses (3):

Withdrawal symptoms

Effexor withdrawal can cause a range of physical and psychological symptoms such as dizziness, nausea, headache, irritability, anxiety, mood swings, and insomnia. These symptoms can be distressing and may interfere with your daily functioning (3).

Worsening of depression or anxiety

Effexor is often prescribed to manage symptoms of depression and anxiety. When doses are missed, it can result in a decrease in the medication’s effectiveness, potentially leading to a recurrence or worsening of depressive or anxious symptoms.

Rebound effects

Abruptly stopping Effexor can cause a rebound effect, where the symptoms being treated may return even stronger than before starting the medication. This can be particularly concerning if you were taking Effexor to manage severe depression or anxiety (3).

Disruption of treatment progress

Consistency is important when taking psychiatric medications like Effexor. Skipping doses or inconsistent medication use can disrupt the treatment progress and make it challenging to achieve the desired therapeutic effects.

To avoid these dangers, it is essential to follow the prescribed dosage schedule and not skip doses without consulting your healthcare provider. 

If you are experiencing difficulties taking your medication regularly or have concerns about side effects or effectiveness, it’s important to discuss it with your healthcare provider.

Final words

To sum up, missing Effexor doses may cause nightmares and other side effects. Missing your dose once or twice won’t necessarily harm your health or your therapeutic goals. However, inconsistent doses can negatively affect your treatment in more ways than you can imagine. 

This is why it’s crucial to follow your doctor’s directions and ensure the safe and effective use of your prescription medications. If you have forgotten to take your Effexor, take it as soon as you remember. If you are concerned about anything, talk to your doctor or pharmacist. 

Was this helpful?

Thanks for your feedback!



Singh D, Saadabadi A. Venlafaxine. 2022 Oct 10. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan–. PMID: 30570984.


Holliday SM, Benfield P. Venlafaxine. A review of its pharmacology and therapeutic potential in depression. Drugs. 1995 Feb;49(2):280-94. doi: 10.2165/00003495-199549020-00010. PMID: 7729333.


Parker G, Blennerhassett J. Withdrawal reactions associated with venlafaxine. Aust N Z J Psychiatry. 1998 Apr;32(2):291-4. doi: 10.3109/00048679809062742. PMID: 9588310.

Find a supportive therapist who can help with Depression.

Discover the convenience of BetterHelp, an online therapy platform connecting you with licensed and accredited therapists specialized in addressing issues such as depression, anxiety, relationships, and more. Complete the assessment and find your ideal therapist within just 48 hours.


AskYourPharm is user-supported. We may earn a commission if you sign up for BetterHelp’s services after clicking through from this site