Butalbital
Overview
 
Butalbital, structure presents as 5-allyl-5-isobutylbarbituric acid, is a barbiturate
Barbiturate
Barbiturates are drugs that act as central nervous system depressants, and can therefore produce a wide spectrum of effects, from mild sedation to total anesthesia. They are also effective as anxiolytics, as hypnotics, and as anticonvulsants...

 with an intermediate duration of action. It has the same chemical formula as talbutal
Talbutal
Talbutal , also called 5-allyl-5-sec-butylbarbituric acid, is a barbiturate with a short to intermediate duration of action. It is a structural isomer of butalbital.Description:...

 but a different structure. Butalbital is often combined with other medications, such as paracetamol (acetaminophen) or aspirin, and is commonly prescribed for the treatment of pain
Pain
Pain is an unpleasant sensation often caused by intense or damaging stimuli such as stubbing a toe, burning a finger, putting iodine on a cut, and bumping the "funny bone."...

 and headache
Headache
A headache or cephalalgia is pain anywhere in the region of the head or neck. It can be a symptom of a number of different conditions of the head and neck. The brain tissue itself is not sensitive to pain because it lacks pain receptors. Rather, the pain is caused by disturbance of the...

. The various formulations combined with codeine are FDA
Food and Drug Administration
The Food and Drug Administration is an agency of the United States Department of Health and Human Services, one of the United States federal executive departments...

 approved for the treatment of tension headache
Tension headache
A tension headache is the most common type of primary headache. The pain can radiate from the neck, back, eyes, or other muscle groups in the body. Tension-type headaches account for nearly 90% of all headaches...

s.

Combinations include:
  • Butalbital and paracetamol
    Paracetamol
    Paracetamol INN , or acetaminophen USAN , is a widely used over-the-counter analgesic and antipyretic . It is commonly used for the relief of headaches and other minor aches and pains and is a major ingredient in numerous cold and flu remedies...

     (acetaminophen) (trade names: Axocet, Bucet, Bupap, Cephadyn, Dolgic, Phrenilin, Phrenilin Forte, Sedapap)
  • Butalbital, paracetamol
    Paracetamol
    Paracetamol INN , or acetaminophen USAN , is a widely used over-the-counter analgesic and antipyretic . It is commonly used for the relief of headaches and other minor aches and pains and is a major ingredient in numerous cold and flu remedies...

     (acetaminophen), and caffeine
    Caffeine
    Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants...

     (trade names: Fioricet
    Fioricet
    Fioricet and Esgic is made from a combination of butalbital , acetaminophen , and caffeine . They are indicated for the treatment of tension headaches and muscle contraction headaches. Although not indicated, they are commonly used to treat migraines and other pain related ailments...

    , Esgic, Esgic-Plus)
  • Butalbital and aspirin
    Aspirin
    Aspirin , also known as acetylsalicylic acid , is a salicylate drug, often used as an analgesic to relieve minor aches and pains, as an antipyretic to reduce fever, and as an anti-inflammatory medication. It was discovered by Arthur Eichengrun, a chemist with the German company Bayer...

     (trade name: Axotal)
  • Butalbital, aspirin, and caffeine
    Caffeine
    Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants...

     (trade names Fiorinal
    Fiorinal
    See also: Fioricet, a preparation using paracetamol instead of aspirin.In the US, Fiorinal is a combination analgesic medication consisting of aspirin, the barbiturate butalbital and caffeine; in other countries the formulation may differ. For example, in Australia Fiorinal consists of...

    , Fiormor, Fiortal, Fortabs, Laniroif)
  • Butalbital, paracetamol
    Paracetamol
    Paracetamol INN , or acetaminophen USAN , is a widely used over-the-counter analgesic and antipyretic . It is commonly used for the relief of headaches and other minor aches and pains and is a major ingredient in numerous cold and flu remedies...

     (acetaminophen), caffeine
    Caffeine
    Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants...

    , and codeine phosphate (Fioricet#3 with Codeine)
  • Butalbital, aspirin
    Aspirin
    Aspirin , also known as acetylsalicylic acid , is a salicylate drug, often used as an analgesic to relieve minor aches and pains, as an antipyretic to reduce fever, and as an anti-inflammatory medication. It was discovered by Arthur Eichengrun, a chemist with the German company Bayer...

    , caffeine
    Caffeine
    Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants...

    , and codeine phosphate (trade name: Fiorinal#3 with Codeine)
  • Ergotamine tartrate, caffeine
    Caffeine
    Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants...

    , butalbital, belladonna
    Belladonna
    Belladonna, from the Italian expression "bella donna" meaning "beautiful lady", may refer to:-Plants:* Atropa belladonna or belladonna or deadly nightshade, a perennial herbaceous plant...

     alkaloids (trade name: Cafergot-PB)

Side effects for any drug are difficult to predict, but commonly reported side effects for butalbital include:

(Rare side-effects include Stevens–Johnson syndrome, an adverse reaction to barbiturates.)

There are other potential side effects; this list should not be considered all-inclusive.
Butalbital is a physically
Physical dependence
Physical dependence refers to a state resulting from chronic use of a drug that has produced tolerance and where negative physical symptoms of withdrawal result from abrupt discontinuation or dosage reduction...

 and psychologically addictive barbiturate
Barbiturate
Barbiturates are drugs that act as central nervous system depressants, and can therefore produce a wide spectrum of effects, from mild sedation to total anesthesia. They are also effective as anxiolytics, as hypnotics, and as anticonvulsants...

.
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