What is stronger than Fentanyl?

I believeOxymorphone would be the closest Legal Opioid in Strength; if used in combination with oxycodone (which metabolizes into oxymorphone) Oxymorphone can reach 200 times the potency in relation to Morphine (although due to its lack of metabolitic absorption in it's current legal form, you would have to have to use it in it's IV/IM form plus oxycodone as a metabolic primer in order to reach the full potency of oxymorphone). It sounds like a lot of experimentation and work so if you are using fentanyl be cautious because it is a 100 times stronger than morphine without experimenting with mixtures. Although Methadone is about 10 times the potency of morphine the half-life (length of metabolism in the body) makes it another dangerous narcotic. I hope I shed some light on your question, and I hope you are not taking a combo of the above drugs mentioned. Also opioid dependency is a life long battle, and if curiOSity for the sake of knowing is the only purpose that's OK but if you are fighting the painful fight there is help and people who care and know what its like ; ) .