gewoon bij arm houden...onderstaande komt uit brochures over spuiten (UK/AUS). niet heel duidelijk waarom het niet goed is in je been, maar je ziet dat ze erg op gericht zijn om mensen eraf te houden om elders dan in de armen te spuiten. dichter bij je hand is ook niet goed. website is
http://www.saferinjecting.info/vcbooklettext.html
Cocaine
Cocaine is a powerful local anaesthetic, so after one or two shots the whole area around the site will be numb. This means that it gets harder and harder to hit the vein - and to tell when you’re missing.
It is far better to smoke crack, or sniff powder cocaine, than it is to inject either of these substances. If you do inject cocaine have a rule that you will only inject into one site, once a day at the most.
The alternative can be rapid vein collapse.
In short...
Go slow. Be gentle. Rotate sites. Use a new sterile syringe every time.
Look after your veins.
If you are injecting and you are running out of veins in your arms, or if you are already injecting into high risk sites like the neck or groin, please think seriously about switching to a less risky way of taking drugs such as snorting, smoking, shafting or swallowing.
Improving injecting technique can reduce vein damage, and prevent some of the really serious conditions that affect people with lots of collapsed veins. We want to reduce vein damage, and the numbers of people who switch from injecting into their arms (which is dangerous enough) to much more dangerous sites such as the neck or groin.
Why?
You have only got one set of veins. If you give them a break when they have been damaged by injecting, they can sometimes recover. But once they collapse they are gone for good.
When veins first start collapsing, the blood uses other nearby veins to get back to the heart. But, as the amount of damage increases, eventually the amount of blood the veins can carry out of the limb is less than the amount being pumped in by the heart. This makes the arm (or more seriously, leg) swollen, cold and painful.

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