There were 75 deaths linked with fentanyl in England and Wales in 2017, up by almost a third from the 2016 statistic of 58.
Carfentanyl, often used as an elephant tranquilliser because of its strength, was mentioned in death certificates in 2017 for the first time.
"The big concern for us in relation to recreational drug users is the five-fold increase in ecstasy deaths and the three-fold increase in cocaine related deaths", she said, adding that these were being caused by higher purity or contaminated substances being sold.
Deaths linked to cocaine and the painkiller fentanyl are rising, figures from the Office for National Statistics (ONS) show.
The ongoing criminalisation of people for personal drug use and possession, Eastwood says, is "dissuading people who want help from seeking it [which in turn] is fuelling drug-related deaths".
In a press release, Eastwood also noted that the government has consistently opposed the introduction of drug consumption rooms (DCRs) - medical facilities which provide sterile drug use equipment in safes space overseen by health professionals.
Fatalities from "legal-highs" also decreased, from 123 in 2016, to 61 in 2017, following the government ban on psychoactive substances. The ONS said this figure had "remained stable", with only 12 more deaths than the year previous. "However, despite deaths from most opiates declining or remaining steady, deaths from fentanyl continued to rise, as did cocaine deaths, which increased for the sixth consecutive year".
Last year, there were 2,521 male drug-related deaths and 1,235 female. Statistics show 565 people have died in drug misuse incidents in the region between 2015 and 2017.
Most were from drug misuse, which accounted for 67 per cent of the total number of drug poisoning deaths.
'Unfortunately, these people are dying in their forties and fifties, decades before the average person.
Consultant addiction psychiatrist Dr Emily Finch told the Today programme there's been around a 30% loss in funding for drug and alcohol treatment services in the last 5-10 years.
'These deaths are largely preventable but would require investment in drug treatment.
But Mr Hamilton argued it is 'middle-aged people using heroin and diazepam that make up the majority of these deaths, .'.
Martin Powell, from Transform Drug Policy Foundation, accused politicians of not funding measures proven to save lives across the world.