Tramadol is classified as a
central nervous system drug usually marketed as the hydrochloride salt
(tramadol hydrochloride); the tartrate is seen on rare occasions, and rarely
(in the US at least) tramadol is available for both injection (intravenous and/or
intramuscular) and oral administration. The most well known dosing unit is the
50 mg generic tablet made by several manufacturers. It is also commonly
available in conjunction with APAP (paracetamol, acetaminophen) as Ultracet, in
the form of a smaller dose of 37.5 mg tramadol and 325 mg of APAP. The
solutions suitable for injection are used in patient-controlled analgesia pumps
under some circumstances, either as the sole agent or along with another agent
such as morphine.
Tramadol comes in many forms,
including:
- Capsules (regular and extended release)
- Tablets (regular, extended release, chewable, low-residue and/or uncoated tablets that can be taken by the sublingual and buccal routes)
- suppositories
- Effervescent tablets and powders
- Ampules of sterile solution for SC, IM, and IV injection
- Preservative-free solutions for injection by the various spinal routes (epidural, intrathecal, caudal, and others)
- powders for compounding
- Liquids both with and without alcohol for oral and sub-lingual administration, available in regular phials and bottles, dropper bottles, bottles with a pump similar to those used with liquid soap and phials with droppers built into the cap
- Tablets and capsules containing (acetaminophen/APAP), aspirin and other agents.
Tramadol is regularly used in the
form of an ingredient in multi-agent topical gels, creams, and solutions for
nerve pain, rectal foam, concentrated retention enema, and a skin plaster
(transdermal patch) quite similar to those used with lidocaine.
Tramadol has a characteristic and
unpleasant taste which is mildly bitter but much less so than morphine and
codeine. Oral and sublingual drops and liquid preparations come with and
without added flavoring. Also, 50 mg water-soluble tramadol tablets have
strawberry-flavouring, no matter which company manufacture it, to distinguish
every, same-looking and same sized Mirtazapine sublingual tablets, which has
orange flavouring irrespective of the manufacturer.[citation needed] This
different flavouring is considered to be a standard. Its relative effectiveness
via transmucosal routes (i.e. sublingual, buccal, rectal) is similar to that of
codeine, and, like codeine, it is also metabolized in the liver to stronger
metabolites (see below).
The maximum dosage per day is 400
mg for oral use and 600 mg for parenteral use. Certain manufacturers or
formulations have lower maximum doses. For example, Ultracet (37.5 mg/325 mg
tramadol/APAP tablets) is capped at 8 tablets per day (300 mg/day) due to its
acetaminophen content. Ultram ER is available in 100, 200, and 300 mg/day doses
and is explicitly capped at 300 mg/day as well.
Patients taking SSRIs (Prozac,
Zoloft, etc.), SNRIs (Effexor, etc.), TCAs, MAOIs, or other strong opioids
(oxycodone, methadone, fentanyl, morphine), as well as the elderly (> 75
years old), pediatric (< 18 years old), and those with severely reduced
renal (kidney) or hepatic (liver) function should consult their doctor
regarding adjusted dosing or whether to use tramadol at all.
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