Injecting drug users are liable to suffer harm from inadvertent injection of unwanted material present in illicit and prescription drugs.
Injectable solutions prepared from pharmaceutical tablets, such as morphine, contain not only the active ingredients, but also other inactive components such as talc, cornstarch and wax.
Although wheel filters can remove microorganisms and other particles when used properly, an experienced NSP worker from an inner-city service told the Bulletin that, in her experience, there “is a concern among some drug users that filters complicate the injecting process”.
The NSP worker said: “Those who are unfamiliar with wheel filters for example, have told me that if the wheel filter was to become detached from the syringe while they are pushing the drugs through, then some or all of the contents could be spilt. If that occurred, then naturally they lose their drugs.
“Some people think that filtering contributes to dose loss even without a spillage; that is, some of the active ingredient getting stuck in the filter itself. In other words, there may be less bang for the scarce buck. Of course, if they are using the right filter correctly there is little or no risk of dose loss,” she said.
“But you can appreciate why people who’ve gone to a fair bit of effort financially and time-wise to arrange their gear don’t want to miss out on anything,” she said.
Another NSP worker who is skilled at instructing clients on correct filter set-ups said some clients have complained of their mix being stuck or blocked by a filter.
“When the filters are used correctly, including sufficient diluting of drugs, this shouldn’t be the case. Leur Lock barrels, which are screwed on, greatly reduce the likelihood of the filter coming off. In fact it’s virtually impossible,” he said.
Filters are not always available as standard distribution across the NSP networks nationally however.
ACT Directions NSP co-ordinator in Canberra, Ms Tammy Waters, said ACT Health funds filters and their availability greatly reduced incidences of vein-care related problems in clients.
Clients can receive up to six filters per day free of charge, but 12 on Fridays “so they won’t run out on the weekend”, Ms Waters said.
“In an ideal world, nobody should shoot up pills. But it happens. Wheel filters are one of the best harm reduction strategies to come out in a long time. People’s health improves dramatically. Years ago we had people losing limbs and getting abscesses – it was shocking,” Ms Waters said.
“But now there is far, far less of that. It’s a real health benefit for clients to have access to this. It is well worth the investment by the government,” she said.
“We have long-term diverted methadone users, for example, who were showing health problems from injection. When they use filters their health has improved dramatically,” she said.
Ms Waters said: “We have the Sartorious® filters, starting at 5.0 microns for chalky pills such as MS Contin® and for when clients may be using quite large volumes of pills. Then we go down to the 1.2 microns which is also for chalky pills, but for a lower volume such as ‘eccies’ or dexamphetamines.
“We recommend that they run them through a series of filters if they are using big quantities. We also have the 0.8, which is more for pills covered with wax such as benzodiazapams, valium or Ducene® etcetera,” she said.
“Then we have the 0.2 – our anti-bacterial filter which we recommend for most things such as heroin, cocaine, methamphetamines. And also for diverted methadone or bupe,” Ms Waters said.
Ms Francine Smith is responsible for Tasmania’s NSPs within the Department of Health and Human Services. She said filters were “particularly important in Tasmania because of the high rate of injecting using prescription medication such as morphine, methadone and dexamphetamines.”
In Tasmania, pharmaceutical opioids were reported as the “last drug injected” by more than a quarter of people who completed the national NSP survey in 2009 [8].
This compared with the national average of 16 percent in 2009, and is far higher than in NSW, for example, where pharmaceutical opioids were reported as the last drug injected by 10 percent in 2009.
TasCAHRD’s Ms Mandy Wilton said: “Primaries in Tasmania receive a set amount of eight boxes of 50 filters per month. Some outlets, like ours at TasCAHRD, do sell them on a cost-recovery basis in addition to what consumers receive for free – our outlets charge $1.10 per filter.”
“We have the 0.22 and the 0.45. The 0.22 is the bacterial filter and the 0.45 is the purpose-designed pill filter,” Ms Smith said.
Ms Carol Holly from SAVIVE in South Australia said they sell a wide range of filters (including Sterifilt®) at cost recovery.
“We have a variety starting from 0.2 microns up to five microns. So that’s the 0.2, 0.45, 0.8, 1.2, and 5.0. The larger filters, such as the five, would be for larger amounts where the client would remove larger particles first before scaling down to the smaller sizes, such as 0.22, to get rid of smaller particles,” Ms Holly said.
Victoria does not provide specific funding for filters, but syringes with Luer Lock* technology, which accommodate commercial filters, are distributed to NSPs. Without set funding for filters, there is some variation amongst the primary outlets concerning price and promotion.
At Healthworks in Melbourne’s western suburbs, 0.45 and 0.22 filters are sold for $1.20, and Sterifilts® for 30 cents. According to NSP worker, Mr Chris Howie, their “usage has increased a bit in recent times, but they are still not widely used.”
It is a situation that Healthworks would like to change, according to Mr Howie: “We think it’s a bit of a new frontier that we need to work on in regards to reducing more harm, because we are doing well with blood borne virus prevention, but there are still some harms being done with poor filtering which can lead to vein injuries.”
Healthworks ran a campaign in 2010 where filters were given out for free and staff gave lessons in how to set them up.
“We are looking at having some more campaigns later this year, and have workshops where the clients can sit down with staff and get practice at using them so they can become more confident. Hopefully, the people we teach can pass on the knowledge to their peers,” Mr Howie said.
Barwon Health, which includes the regional city of Geelong, gives out far fewer filters, according to NSP co-ordinator, Mr Joe Kim.
“We give out Sartorious® 0.22 and 0.45. We can give them away for free at the moment because the numbers are quite low – about only 20 per month because there has not been a history of promoting them in our service,” Mr Kim said.
“If demand was to go up as more people know about them then we’d probably have to look at charging, perhaps about $1.20,” he said.
A pharmacist in Newtown in Sydney, Mr Grant Ovens, has joined a Pharmacy Guild (NSW) program aimed at further increasing the private sector’s participation in overall harm reduction strategies.
Mr Ovens is particularly in favour of offering filters as part of a full range of equipment. “We have 0.2 and the 1.2 filters, which seem to be the ones most people want. I will expand it to other sizes,” Mr Ovens said.
“We do barrels and butterflies as well. We are aiming to be a one-stop shop. It fits in with my personal philosophy on needle exchange,” he said. “It’s just something that I have come around to. I’ve enjoyed dealing with them, the clients. I try to have a bit of a chat to them to say they are welcome to come in,” he said.
“I would like to see harm minimisation become a bit of specialisation for some pharmacists. Not every pharmacy is going to want to do it, but if you had one in every suburb, then you’re providing better access and better service and really saving lives and the community a hell of a lot of money. If we could do it like that, then it would be a positive for everyone,” Mr Ovens said.
Mr Scott Dodd from Queensland Injectors Health Network (QuIHN) said filters were sold at $1.30 for one or $1.10 for 10 or more.
“In terms of varieties, we have the 0.2 microns for bacteria, .8 which do most of the morphine tablets such as MS Contin® and OxyContin®, or ‘subbies’ (Suboxone®). The five micron filter is for the chalky drugs, such as dexamphetamines, physeptone, ecstasy and benzos. People can use the filters in combination,” Mr Dodd said.
Demand for filters tended to be partly influenced by drug availability: “It can also depend on heroin availability, as people move across to pills if there is less heroin around,”
he said.
The QuIHN peer education program, MixUp, includes instructing clients how to correctly assemble filters. “A while back we were doing a lot more demonstrations, but more people seem to know how to use them these days,” Mr Dodd said.
This story appears in the Anex Bulletin volume 9 edition 4. To find out more about the Bulletin, including how to be added to our mailing list please visit: http://www.anex.org.au/new/publications/anex-bulletin/