Pentothal (thiopental sodium for injection) is a barbiturate used to help patients relax before receiving general anesthesia with an inhaled medication.

Can thiopental be given orally?

Thus, oral or rectal doses of thiopental should pro- duce less effect than intramuscular doses. In this study, we evaluated the effect of hepatic metabolism and injection site blood flow on blood and brain thiopental concentrations following oral, rectal, or intramuscular administrations.

Is thiopental an anesthesia?

Sodium thiopental is an important and medically necessary anesthetic agent that has been used for years to induce anesthesia in patients undergoing surgical procedures.

What type of Anaesthetic is sodium thiopental?

Sodium thiopental, also known as Sodium Pentothal (a trademark of Abbott Laboratories), thiopental, thiopentone, or Trapanal (also a trademark), is a rapid-onset short-acting barbiturate general anesthetic. It is the thiobarbiturate analog of pentobarbital, and an analog of thiobarbital.

What type of drug is thiopental?

Thiopental is a barbiturate (bar-BIT-chur-ate). Thiopental slows the activity of your brain and nervous system. Thiopental is used to help you relax before you receive general anesthesia with an inhaled medication. Thiopental may be used for other purposes not listed in this medication guide.

How do you dilute thiopental?

For continuous intravenous drip administration, concentrations of 0.2% or 0.4% are used. Solutions may be prepared by adding thiopental to 5% water solution of dextrose or to 0.9% solution of sodium chloride.

Is thiopental an analgesic?

Furthermore, thiopental is not analgesic and other agents should be included to supply analgesia.

Is thiopental water soluble?

Thiopental is the most commonly used barbiturate and is derived from barbituric acid, a condensation product of urea and malonic acid. It is insoluble in water and is prepared in a carbonate salt to maintain an alkaline pH.

How is thiopental administered?

Intravenous injection. Thiopental Sodium 500mg Injection is administered intravenously normally as a 2.5% w/v (500mg in 20ml) solution. On occasions it may be administered as a 5% w/v solution (500mg in 10ml).

Is sodium thiopental illegal?

Sodium thiopental, an anesthetic widely used in executions prior to 2010, is no longer produced by any U.S. pharmaceutical manufacturers, and the FDA has said that it has no legal uses in the U.S. In January 2017, the Texas Department of Criminal Justice sued the FDA, demanding a final decision on the detained imports.

Article first time published on

How is thiopental metabolized?

Thiopental is extensively metabolized, primarily in the liver, resulting in only 0.3% of an administered dose being excreted unchanged in the urine. Ring desulfuration leads to the generation of an active metabolite, pentobarbital, that exists in concentrations approximately 3-10% that of the parent concentration.

Why is sodium thiopental banned?

There are no longer any FDA-approved manufacturers of sodium thiopental. Years ago, the sole supplier stopped making the drug because states were using it in lethal injections. … The FDA responded that a law enforcement exception can’t apply, because the drugs will still be used on humans.

What is thiopental injection?

Thiopental injection contains the active ingredient thiopental sodium (as thiopental sodium and sodium carbonate) which is also known as thiopentone sodium. It is an anaesthetic agent, which may be given: as a general anaesthetic or to make you sleepy before using another anaesthetic agent.

Why was thiopental discontinued?

Hospira Inc., of Lake Forest, Ill., stopped making its brand of sodium thiopental, Pentothal, at a North Carolina plant early last year because of an unspecified raw material supply problem.

Is thiopental an acid or base?

1. Ionization and environmental pH. Red arrows indicate the pH at which lidocaine (a weak base) and thiopental (a weak acid) are prepared in solution. At body pH, much of the drug becomes unionized and can cross membranes.

Is thiopental safe during pregnancy?

Thiopental should be used during pregnancy only if the possible benefit outweighs the possible risk to the unborn baby. No studies have been done in animals, and no well-controlled studies have been done in pregnant women. Thiopental should be given to a pregnant woman only if clearly needed.

Can police use truth serum?

The test is sometimes used by law enforcement officers, but it is doubtful whether it is as useful as popular belief would suggest. The description truth serum is misleading as the drug used is not a serum, and it does not always lead to the truth.

Is diazepam a barbiturate?

Diazepam has similar sedative and hypnotic effects as barbiturates, but unlike the older drugs, diazepam is a more effective anxiolytic, it is much less likely to result in lethal overdose, and it is said to have a lower potential for abuse and dependence.

What schedule is thiopental?

Thiopental sodium is classified as a Schedule III controlled substance.

Does sodium thiopental really work?

Yes, such mind-altering drugs exist, but their effect does not completely inhibit a subject’s ability to lie. Some truth serums, like sodium thiopental, slow the speed at which your body sends messages from your spinal chord to your brain.

What is the chemical name of thiopental sodium?

PubChem CID23665410Chemical SafetyLaboratory Chemical Safety Summary (LCSS) DatasheetMolecular FormulaC11H17N2NaO2SSynonymsTHIOPENTAL SODIUM Sodium thiopental Sodium pentothal Sodium thiopentone Thiomebumal sodium More…Molecular Weight264.32

Where does thiopental accumulate?

Rapid distribution (initial t½ 4 min) allows swift recovery after a single dose. The terminal t½ of thiopental is 11 h and repeated doses or continuous infusion lead to significant accumulation in fat and very prolonged recovery. Thiopental is metabolised in the liver.

What does anesthesia gas smell like?

The anaesthetic gas has a funny smell, kind of like a permanent marker.

Why is propofol preferred over thiopental?

Propofol seemed to have a more depressant effect than thiopentone on the circulatory response to anaesthesia. Recovery times from the end of the operative procedure until the patients opened their eyes on command and were orientated were shorter in the propofol patients compared to the thiopentone patients.

What drugs are intravenous anesthesia?

Propofol, etomidate, and ketamine are the intravenous (IV) sedative-hypnotic agents commonly used to induce general anesthesia (table 1).

Which intravenous anesthetic produces dissociative anesthesia?

Ketamine is a phencyclidine (hallucinogen) derivative and an antagonist of the NMDA receptor. In anaesthetic doses it produces a trance-like state known as dissociative anaesthesia (sedation, amnesia, dissociation, analgesia).

Why is thiopental short acting?

Although thiopental has a relatively long half-life of ∼ 9 hours, it is a short-acting, highly lipid-soluble compound. Its short duration of action is due to redistribution into muscle and eventually fat Marshall and Longnecker (1996).

What is the truth drug called?

Ether, the truth-inducing drug, prompted a confession from a police officer who had murdered his wife. But the first drug ever approved as a truth inducing drug was scopolamine. This drug was first “discovered” by Dr. Robert House, an obstetrician.

Where do you inject midazolam?

This medication is given by slow injection into a vein or muscle as directed by your doctor. It is usually given by a health care professional.

Why is thiopental used in obstetrics?

This interval is a particular concern in obstetrics for several reasons: Thiopental is usually used for induction, often in low doses (see later). Opioids are usually omitted at induction. Any difficulty with airway management will result in a delay in delivery of volatile agent.