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BAC 123

  • Allzital / Ascomp / Bupap / Fioricet / Zebutal
  • PAR011
  • In Stock

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Butalbital is a barbiturate drug used for symptomatic treatment of tension-type headache in various combinations with acetaminophen, aspirin, caffeine, and codeine.

Indicated for the management of the symptom complex of tension (or muscle contraction) headache, when other non-opioid analgesics and alternative treatments are inadequate, in various combinations with acetaminophen, aspirin, caffeine, and codeine.

Butalbital has a low degree of selectivity and a narrow therapeutic index. Typically indicated to manage tension (or muscle contraction) headaches, butalbital is often combined with one or more therapeutic agents, such as acetylsalicylic acid, acetaminophen, aspirin, and caffeine.

Butalbital is a short to intermediate-acting barbiturate that reversibly depresses the activity of excitable tissues, including the central nervous system in a nonselective manner. Barbiturates exhibit muscle-relaxing and anti-anxiety properties and they are capable of producing all levels of CNS mood alteration from excitation to mild sedation, hypnosis, and deep coma.

Barbiturates are habit-forming; they can produce tolerance and both dependence and addiction, which is partly explained by decreased drug concentration at the site of action due to enhanced drug metabolism by induced enzymes, or to cellular adaptive changes. In addition, butalbital may lead to analgesic overuse headache.

While butalbital is expected to mediate similar actions as other members of the barbiturate drug class, the effects of butalbital in isolation are not well understood. It is suggested that butalbital is added in combination products to antagonize the unwanted central stimulating effect of stimulatory ingredients such as caffeine. Butalbital may decrease blood pressure and heart rate when administered at sedative and hypnotic doses.

Butalbital is a CNS depressant that suppresses neuronal excitability, impulse conduction, and the release of neurotransmitters, similar to actions of other barbiturates. Barbiturates primarily mediate suppressive actions on polysynaptic neuronal responses by diminishing facilitation while enhancing inhibition.

Barbiturates potentiate GABA-induced increases in chloride conductance and depress voltage-activated calcium currents while prolonging the duration of GABA-induced chloride channel opening.

Butalbital may also inhibit the excitatory effects mediated by AMPA receptors by reducing glutamate-induced depolarizations of the receptor. It is also proposed that barbiturates and opioids may potentiate the analgesic effects of each other when co-administered, although there are inconsistencies across preclinical data.

Metabolism: Butalbital is expected to undergo nearly complete hepatic metabolism.1 It primarily undergoes C5 oxidation to form 5-isobutyl-5-(2,3-dihydroxypropyl) barbituric acid, which is the major metabolite. Butalbital may also undergo omega-hydroxylation to form 5-allyl-5(3-hydroxy-2-methyl-1-propyl) barbituric acid.

Absorption: Butalbital gets readily and rapidly absorbed from the gastrointestinal tract. The time to reach the peak plasma concentrations is reported to be approximately 2 hours.

Route of elimination: Butalbital predominantly undergoes renal elimination with 59 to 88% of the total dose administered being excreted from the kidneys as unchanged parent drug or metabolites

Half life: The plasma half-life is about 35 hours. In a study of 5 healthy volunteers receiving 100 mg butalbital in combination with aspirin and caffeine, the mean plasma elimination half-life of butalbital was 61 hours, with the range of 35 to 88 hours.

All medicines may cause side effects, but many people have no, or minor, side effects. Some medical conditions may interact with Butalbital.

Tell your doctor or pharmacist if you have any medical conditions.

Common tramadol side effects may include: Symptoms of acute barbiturate poisoning include drowsiness, confusion, coma, respiratory depression, hypotension, and shock. Due to the CNS depressant effects, an overdose of barbiturates may lead to death.

Barbiturates are also associated with withdrawal reactions, which may lead to death if severe.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.

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