"Our failure to realize all lives have equal value has meant that until now we have failed to prevent unnecessary deaths."
Someone who takes risks with their own life daily by putting dangerous doses of drugs into their bodies by definition values his or her own life less than most. If Bell is arguing for public funding of Naloxone, the debate about lives and relative value will be invoked.
Health is rationed. Funding is limited. Hospitals already practice rationing and age plays a big part. In the health system all lives do not have equal value.
(But I'd have no problem with families of addicts or alcoholics purchasing the Naloxone for emergencies. It is available in New Zealand.)