Does Buspar (buspirone) cause anorexia?

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Last updated: March 2, 2025 • View editorial policy

From the Guidelines

Buspar (buspirone) is not commonly associated with causing anorexia, but it may lead to decreased appetite in some patients as a side effect. When considering the potential effects of Buspar on appetite, it's essential to weigh the benefits of the medication against the risks, particularly in terms of morbidity, mortality, and quality of life. According to the provided evidence, Buspar is recommended for the management of mild to moderate agitation, with an initial dosage of 5 mg twice daily and a maximum of 20 mg three times daily 1. While the evidence does not directly address the question of anorexia, it does suggest that Buspar may be a useful alternative to other anxiolytic drugs, such as benzodiazepines, which can have more severe side effects.

Some key points to consider when evaluating the potential for Buspar to cause anorexia include:

  • The medication's mechanism of action, which involves the modulation of serotonin receptors in the brain, may affect appetite regulation in some individuals.
  • The standard dosing of Buspar and the potential for gradual increases in dosage as needed.
  • The importance of monitoring weight and nutritional intake in patients who experience significant appetite loss while taking Buspar.
  • The potential for alternative anxiety treatments if anorexia becomes severe or persistent.

It's crucial to consult a healthcare provider if anorexia or significant appetite loss occurs while taking Buspar, as they can provide guidance on adjusting the medication schedule or exploring alternative treatments. Never stop taking Buspar abruptly without medical guidance, as this could lead to withdrawal symptoms or a return of anxiety symptoms. Overall, while Buspar may not be commonly associated with anorexia, it's essential to carefully monitor patients for any changes in appetite or weight and to prioritize their overall morbidity, mortality, and quality of life.

From the FDA Drug Label

Infrequent were flatulence, anorexia, increased appetite, salivation, irritable colon, and rectal bleeding; rare was burning of the tongue. The answer is yes, Buspar (buspirone) can cause anorexia, as it is listed as an infrequent adverse event in the gastrointestinal system, occurring in 1/100 to 1/1,000 patients 2.

From the Research

Buspar (Buspirone) and Anorexia

  • There is no direct evidence in the provided studies that suggests Buspar (buspirone) causes anorexia 3, 4, 5, 6, 7.
  • The studies primarily focus on the pharmacological properties, therapeutic efficacy, and side effects of buspirone as an anxiolytic drug.
  • Common side effects mentioned in the studies include headaches, dizziness, nervousness, and lightheadedness, but anorexia is not listed as a potential side effect 4, 5, 6.
  • The studies discuss the drug's mechanism of action, pharmacokinetics, and potential interactions with other substances, but do not mention anorexia as a potential consequence of buspirone use 3, 6, 7.

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.