What foods should be avoided while taking Prozac (fluoxetine)?

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Last updated: March 8, 2025 • View editorial policy

From the Guidelines

Patients taking Prozac (fluoxetine) should avoid consuming tyramine-rich foods, such as aged cheeses, cured meats, and fermented foods, as they may interact with Prozac to cause dangerous increases in blood pressure, especially if combined with other medications 1. When considering food interactions with Prozac, it's essential to prioritize those that can have severe consequences, such as tyramine-rich foods.

  • Tyramine is an amino acid that can interact with monoamine oxidase inhibitors (MAOIs), but it can also have adverse effects when combined with certain medications like Prozac, particularly in terms of increasing blood pressure.
  • Other foods and substances that may interact with Prozac include grapefruit juice, which can interfere with the enzymes that metabolize the medication, potentially increasing its blood levels and risk of side effects 2.
  • Additionally, patients should be cautious with caffeine, as it may increase anxiety or nervousness in some individuals taking Prozac.
  • It's also important to note that Prozac can have various side effects, including dry mouth, nausea, diarrhea, and changes in appetite, which may be affected by food intake.
  • However, the most critical consideration is avoiding tyramine-rich foods and other substances that can have severe interactions with Prozac.
  • Patients should always take Prozac as prescribed, typically once daily in the morning, with or without food, and consult their healthcare provider for personalized guidance if they experience unusual side effects after consuming certain foods while on Prozac.

From the Research

Foods to Avoid While Taking Prozac (Fluoxetine)

While Prozac (fluoxetine) is a selective serotonin reuptake inhibitor (SSRI) and not a monoamine oxidase inhibitor (MAOI), it's essential to consider potential interactions with certain foods. Although the provided studies primarily focus on MAOIs, some information can be applied to SSRIs like Prozac.

  • Foods that may interact with MAOIs and potentially with SSRIs like Prozac include: + Aged cheeses 3, 4 + Concentrated yeast extracts (e.g., Marmite) 3 + Sauerkraut 3 + Broad bean pods 3, 4 + Smoked or pickled fish 4 + Beef or chicken liver 4 + Dry fermented sausage 4 + Brewer's yeast products 4 + Certain alcoholic beverages 4

Tyramine Content in Foods

Tyramine is a potent releaser of norepinephrine and can be found in high concentrations in certain foods. While the studies focus on MAOIs, it's crucial to note that tyramine-rich foods may still pose a risk for patients taking SSRIs like Prozac, although the risk is generally considered lower.

  • Tyramine-rich foods to approach with caution: + Aged meats 3 + Aged cheeses 5, 3, 4 + Fermented foods 3

Important Considerations

It's essential to consult with a healthcare provider for personalized dietary advice while taking Prozac (fluoxetine). They can provide guidance on potential food interactions and help minimize risks. Additionally, patients should inform their healthcare provider about all medications, including over-the-counter drugs and supplements, to ensure safe treatment 5, 6.

References

Guideline

clinical practice guideline for the assessment and treatment of children and adolescents with anxiety disorders.

Journal of the American Academy of Child and Adolescent Psychiatry, 2020

Guideline

clinical practice guideline for the assessment and treatment of children and adolescents with anxiety disorders.

Journal of the American Academy of Child and Adolescent Psychiatry, 2020

Research

Dietary restriction, tyramine, and the use of monoamine oxidase inhibitors.

Journal of clinical psychopharmacology, 1989

Research

Patient compliance with MAO inhibitor therapy.

The Journal of clinical psychiatry, 1984

Research

Dietary tyramine restriction for hospitalized patients on linezolid: an update.

Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 2010

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.