Hydrocodone

buy cheap hydrocodone online australia. Hydrocodone, also known as dihydrocodeinone, is a semi-synthetic opioid used to treat pain and as a cough suppressant.^[11] It is taken by mouth.^[11] Typically, it is dispensed as the combination acetaminophen/hydrocodone or ibuprofen/hydrocodone for pain severe enough to require an opioid^[12][13][14] and in combination with homatropine methylbromide to relieve cough.^[11] It is also available by itself in a long-acting form sold under the brand name Zohydro ER, among others, to treat severe pain of a prolonged duration.^[11][15] Hydrocodone is a controlled drug: in the United States, it is classified as a Schedule II Controlled Substance. buy cheap hydrocodone online australia.

Common side effects include dizziness, sleepiness, nausea, and constipation.^[11] Serious side effects may include low blood pressure, seizures, QT prolongation, respiratory depression, and serotonin syndrome.^[11] Rapidly decreasing the dose may result in opioid withdrawal.^[11] Use during pregnancy or breastfeeding is generally not recommended.^[16] Hydrocodone is believed to work by activating opioid receptors, mainly in the brain and spinal cord.^[11] Hydrocodone 10 mg is equivalent to about 10 mg of morphine by mouth.^[17] buy cheap hydrocodone online australia.

Hydrocodone was patented in 1923, while the long-acting formulation was approved for medical use in the United States in 2013.^[11][18] It is most commonly prescribed in the United States, which consumed 99% of the worldwide supply as of 2010.^[19] In 2018, it was the 402nd most commonly prescribed medication in the United States, with more than 400,000 prescriptions.^[20] Hydrocodone is a semi-synthetic opioid, converted from codeine^[21][22] or less often from thebaine.^[23] Production using genetically engineered yeasts has been developed but is not used commercially. buy cheap hydrocodone online australia.

Medical uses

Hydrocodone is used to treat moderate to severe pain. In liquid formulations, it is used to treat coughing.^[11] In one study comparing the potency of hydrocodone to that of oxycodone, it was found that it took 50% more hydrocodone to achieve the same degree of miosis (pupillary contraction).^[27] The investigators interpreted this to mean that oxycodone is about 50% more potent than hydrocodone. buy cheap hydrocodone online australia.

However, in a study of emergency department patients with fractures, it was found that an equal amount of either drug provided about the same degree of pain relief, indicating that there is little practical difference between them when used for that purpose.^[28] Some references state that the analgesic action of hydrocodone begins in 20–30 minutes and lasts about 4–8 hours.^[29] The manufacturer’s information says onset of action is about 10–30 minutes and duration is about 4–6 hours.^[30] Recommended dosing interval is 4–6 hours. Hydrocodone reaches peak serum levels after 1.3 hours. buy cheap hydrocodone online australia.

Available forms

See also: Hydrocodone/paracetamol, Hydrocodone/ibuprofen, and Hydrocodone/aspirin

Hydrocodone is available in a variety of formulations for oral administration:^[32][33][34]

• The original oral form of hydrocodone alone, Dicodid, as immediate-release 5- and 10-mg tablets is available for prescription in Continental Europe per national drug control and prescription laws and Title 76 of the Schengen Treaty, but dihydrocodeine has been more widely used for the same indications since the beginning in the early 1920s, with hydrocodone being regulated the same way as morphine in the German Betäubungsmittelgesetz, the similarly named law in Switzerland and the Austrian Suchtmittelgesetz, whereas dihydrocodeine is regulated like codeine. For a number of decades, the liquid hydrocodone products available have been cough medicines.buy cheap hydrocodone online australia.
• Hydrocodone plus homatropine (Hycodan) in the form of small tablets for coughing and especially neuropathic moderate pain (the homatropine, an anticholinergic, is useful in both of those cases and is a deterrent to intentional overdose) was more widely used than Dicodid and was labelled as a cough medicine in the United States whilst Vicodin and similar drugs were the choices for analgesia.
• Extended-release hydrocodone in a time-release syrup also containing chlorphenamine/chlorpheniramine is a cough medicine called Tussionex in North America. In Europe, similar time-release syrups containing codeine (numerous), dihydrocodeine (Paracodin Retard Hustensaft), nicocodeine (Tusscodin), thebacon, acetyldihydrocodeine, dionine, and nicodicodeine are used instead. buy cheap hydrocodone online australia.
• Immediate-release hydrocodone with paracetamol (acetaminophen) (Vicodin, Lortab, Lorcet, Maxidone, Norco, Zydone)
• Immediate-release hydrocodone with ibuprofen (Vicoprofen, Ibudone, Reprexain)
• Immediate-release hydrocodone with aspirin (Alor 5/500, Azdone, Damason-P, Lortab ASA, Panasal 5/500)
• Controlled-release hydrocodone (Hysingla ER by Purdue Pharma, Zohydro ER)^[35]

Hydrocodone is not available in parenteral or any other non-oral forms.

Side effects.

Common side effects of hydrocodone are nausea, vomiting, constipation, drowsiness, dizziness, lightheadedness, anxiety, abnormally happy or sad mood, dry throat, difficulty urinating, rash, itching, and contraction of the pupils. Serious side effects include slowed or irregular breathing and chest tightness.^[36]

Several cases of progressive bilateral hearing loss unresponsive to steroid therapy have been described as an infrequent adverse reaction to hydrocodone/paracetamol misuse. This adverse effect has been considered by some to be due to the ototoxicity of hydrocodone.^[37][38] Other researchers have suggested that paracetamol is the primary agent responsible for the ototoxicity.^[39][40]

The U.S. Food and Drug Administration (FDA) assigns the drug to pregnancy category C, meaning that no adequate and well-controlled studies in humans have been conducted. A newborn of a mother taking opioid medications regularly prior to the birth will be physically dependent.^[41][42] The baby may also exhibit respiratory depression if the opioid dose was high.^[43] An epidemiological study indicated that opioid treatment during early pregnancy results in increased risk of various birth defects.^[44] buy cheap hydrocodone online australia.

Symptoms of hydrocodone overdose include narrowed or widened pupils; slow, shallow, or stopped breathing; slowed or stopped heartbeat; cold, clammy, or blue skin; excessive sleepiness; loss of consciousness; seizures; or death.^[36] buy cheap hydrocodone online australia.

Hydrocodone can be habit forming, causing physical and psychological dependence. Its abuse liability is similar to morphine and less than oxycodone.^[45] buy cheap hydrocodone online australia.

Interactions.

Hydrocodone is metabolized by the cytochrome P450 enzymes CYP2D6 and CYP3A4, and inhibitors and inducers of these enzymes can modify hydrocodone exposure.^[46] One study found that combination of paroxetine, a selective serotonin reuptake inhibitor (SSRI) and strong CYP2D6 inhibitor, with once-daily extended-release hydrocodone, did not modify exposure to hydrocodone or the incidence of adverse effects.^[46][47] These findings suggest that hydrocodone can be coadministered with CYP2D6 inhibitors without dosage modification.^[46][47] Conversely, combination of hydrocodone/acetaminophen with the antiviral regimen of ombitasvir, paritaprevir, ritonavir, and dasabuvir for treatment of hepatitis C increased peak concentrations of hydrocodone by 27%, total exposure by 90%, and elimination half-life from 5.1 hours to 8.0 hours.^[48] Ritonavir is a strong CYP3A4 inhibitor as well as inducer of CYP3A and other enzymes, and the other antivirals are known to inhibit drug transporters like organic anion transporting polypeptide (OATP) 1B1 and 1B3, P-glycoprotein, and breast cancer resistance protein (BCRP).^[48] The changes in hydrocodone levels are consistent with CYP3A4 inhibition by ritonavir.^[48] Based on these findings, a 50% lower dose of hydrocodone and closer clinical monitoring was recommended when hydrocodone is used in combination with this antiviral regimen.^[48] buy cheap hydrocodone online australia.

People consuming alcohol, other opioids, anticholinergic antihistamines, antipsychotics, anxiolytics, or other central nervous system (CNS) depressants together with hydrocodone may exhibit an additive CNS depression.^[43] Hydrocodone taken concomitantly with serotonergic medications like SSRI antidepressants may increase the risk of serotonin syndrome.^[49] buy cheap hydrocodone online australia.