Barnsley MPs Michael Dugher and Dan Jarvis are backing Barnsley Beacon in its battle for funds to continue its work in the community.
The charity was founded in 2000 by a local mother after she discovered her three sons were addicted to heroin. It offers help to relatives, carers and friends of people with drug and alcohol problems.
Among the services offered by Barnsley Beacon are a telephone helpline, one-to-one and group support sessions, respite activities, social events and coffee mornings.
Last year, the charity helped 103 people over 605 sessions and has seen demand for its services rise by around 20% in the last four months.
However, Barnsley Beacon says its future could now be in doubt unless it can raise more funds to sustain its work.
Mr Dugher, who represents Barnsley East, said: “These are tough times when it comes to charities who rely on our support to survive and provide vital services in the community.
“I would urge people and organisations who might be able to support Barnsley Beacon to get in touch with them so they can continue helping relatives and carers of people with drug and alcohol problems.”
Mr Jarvis, whose constituency is Barnsley Central, commented: “Barnsley Beacon provides an invaluable service to families supporting loved ones with addiction. It would be a huge loss to our community if this charity was forced to close its doors. I very much hope that those who are able to support Barnsley Beacon will come forward.”