Examples
Colchicine is usually taken in tablet form (oral).
In rare cases, it also may be injected into a vein (intravenous), but injected colchicine has potentially serious side effects and is
usually avoided.
How It Works
Colchicine blocks the inflammation caused by
uric acid crystals.
Why It Is Used
Colchicine has long been used to relieve acute
gout attacks. It does not lower the level of uric
acid, but in low doses, it does reduce the chance of future gout
attacks.
Colchicine may be an option for some people who cannot take
non-steroidal anti-inflammatory drugs (NSAIDs).
Colchicine can be given intravenously for acute attacks or for
people who cannot tolerate the stomach problems associated with oral
colchicine. However, intravenous colchicine can damage the veins and has serious side effects, including
bone marrow suppression and cell damage to the kidneys and other organs, and is
usually avoided, if possible.1
To help reduce the number and severity of gout attacks that can
result when uric acid levels change suddenly, colchicine may be given at the
same time as uricosuric medications, such as probenecid (Benuryl) or
sulfinpyrazone, which lower uric acid levels, or allopurinol
(Zyloprim), which blocks uric acid production.
Colchicine is avoided or used with caution in
people who have:
How Well It Works
Colchicine is usually effective in relieving a gout attack within
12 to 24 hours.1
Low doses of colchicine are effective to prevent or reduce the severity of future gout attacks.
Side Effects
80% of people who take colchicine in doses that are high enough to
be effective develop stomach problems, such as cramping, nausea, diarrhea, or
vomiting.2
Common, mild side effects include:
- Nausea.
- Vomiting.
- Diarrhea.
Serious side effects of colchicine include bone marrow problems and
muscle inflammation. Colchicine is usually avoided or the dose adjusted in
people who have reduced kidney function.
See Drug Reference for a full list of side effects. (Drug Reference
is not available in all systems.)
What To Think About
Non-steroidal anti-inflammatory drugs (NSAIDs) are equally effective
and cause less nausea, vomiting, and diarrhea than colchicine. Colchicine,
however, does not make stomach ulcers worse.
If you have kidney or liver problems, talk to your health
professional before and/or during taking colchicine. This medication may cause
existing kidney or liver conditions to get worse and could lead to severe adverse
reactions and even death.
You should seek other forms of treatment before you consent to take
intravenous colchicine due to the dangerous side effects associated with this
form of treatment.
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