| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| heroin vs fentanyl half life | 0.89 | 0.9 | 6258 | 96 |
| fentanyl vs morphine half life | 0.7 | 0.5 | 3610 | 33 |
| what's the half life of fentanyl | 0.11 | 0.7 | 786 | 43 |
| fentanyl withdrawal vs heroin | 1.35 | 0.8 | 3636 | 60 |
| fentanyl half life in humans | 1.39 | 0.4 | 2689 | 65 |
| fentanyl half life in blood | 0.83 | 0.4 | 4634 | 49 |
| fentanyl vs heroin chemical structure | 1.27 | 0.8 | 6353 | 64 |
| fentanyl context half life | 1.45 | 0.2 | 9179 | 75 |
| fentanyl to heroin comparison | 1.65 | 0.6 | 1281 | 100 |
| fentanyl injection half life | 0.94 | 0.5 | 5399 | 18 |
| what is the half-life of fentanyl | 0.57 | 0.4 | 3492 | 34 |
| what's the half life of fentanyl iv | 0.46 | 0.1 | 9118 | 19 |
| half life of fentanyl inhalation | 1.74 | 0.4 | 7412 | 84 |
| fentanyl cost vs heroin | 1.66 | 0.2 | 4140 | 45 |
| fentanyl peak and half life | 1.82 | 0.2 | 3826 | 9 |
| half life of fentanyl infusion | 1.39 | 1 | 1718 | 61 |
| half life of fentanyl po | 1.71 | 0.4 | 2780 | 31 |
| half life of heroin | 1.79 | 0.1 | 3991 | 10 |
| is fentanyl considered heroin | 0.87 | 0.5 | 3644 | 86 |
| is fentanyl and heroin the same | 1.01 | 0.2 | 828 | 96 |
| is fentanyl the same as heroine | 1.97 | 0.6 | 2250 | 74 |
| did fentanyl replace heroin | 1.18 | 0.4 | 4674 | 90 |
