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Overdose
In clinical pharmacology trials, buspirone up to 400 mg/day was administered to healthy male volunteers. As this dose was approached, the following symptoms were observed in descending order of freque
ncy: drowsiness, ataxia, nausea and vomiting, dizziness, clammy feeling, difficulty thinking, feeling high, rushing sensation, gastric distress, headache, itching, miosis, hypotension, tremor, incoord
ination, insomnia and hallucinations. In a dose ranging study in acute psychotic patients, up to 2400 mg/day was administered. Dizziness, nausea and vomiting were the most common adverse effects. One
patient developed extrapyramidal symptoms at 600 mg/day.
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What side effects can this medication cause?
More common side effects may include:
- Dizziness, dry mouth, fatigue, headache, light-headedness, nausea, nervousness, unusual excitement
Less common or rare side effects may include:
- Anger/hostility, blurred vision, bone aches/pain, confusion, constipation, decreased concentration, depression, diarrhea, fast, fluttery heartbeat, incoordination, muscle pain/aches, numbness,
pain or weakness in hands or feet, rapid heartbeat, rash, restlessness, stomach and abdominal upset, sweating/clamminess, tingling or pins and needles, tremor, urinary incontinence, vomiting, weakness
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Possible food and drug interactions when taking this medication
Because the effects of concomitant administration of buspirone with most other psychotropic drugs have not been studied, the concomitant use of buspirone with other CNS active drugs should be approach
ed with caution.
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Adverse Effects
Endocrine:
Infrequently, decreased and increased libido, weight gain, weight loss, menstrual irregularity/breakthrough bleeding. Rarely, delayed ejaculation, impotence, galactorrhea, amenorrhea, t
hyroid abnormality.
Allergic or Toxic:
Skin rash, sore throat. Infrequently, edema/facial edema, pruritus, chills/fever. Rarely, photophobia, erythema, flu-like symptoms.
Clinical Laborato
ry:
Infrequently, increases in liver enzymes. Rarely, eosinophilia, leukopenia, thrombocytopenia.
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DRUG ABUSE AND DEPENDENCE :
When you are taking buspirone, it is especially important that your health care professional know if you are taking any of the following:
- Erythromycin (e.g., ERYC, E.E.S.) or
- Itraco
nazole (e.g., Sporanox)¡XHigher blood levels of buspirone may occur, increasing the chance of side effects. Your doctor may change the dose of buspirone that you take
- Monoamine oxidase (MAO) i
ibitor activity (isocarboxazid [e.g., Marplan], phenelzine [e.g., Nardil], procarbazine [e.g., Matulane], selegiline at doses more than 10 mg a day [e.g., Eldepryl], tranylcypromine [e.g., Parnate])¡X
aking buspirone while you are taking monoamine oxidase (MAO) inhibitors may cause high blood pressure
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What is this medicine
BUSPAR differs from typical benzodiazepines like Vallium or Xanax anti-anxiety medication in that it does not exert anti-seizure or muscle relaxant effects. It also lacks the prominent sedative effect
that is associated with benzodiazepines. In vitro studies have shown that BUSPAR has a high affinity for serotonin receptors (receptors in the brain that mediate arousal). BUSPAR has no significant a
ffinity for benzodiazepine receptors in the brain.
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