| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| phenobarbital a controlled substance | 1.64 | 0.8 | 3863 | 56 | 36 |
| phenobarbital | 1.87 | 0.2 | 2507 | 16 | 13 |
| a | 0.44 | 0.5 | 6935 | 73 | 1 |
| controlled | 1.48 | 0.7 | 7099 | 89 | 10 |
| substance | 1.27 | 0.1 | 2399 | 28 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| phenobarbital a controlled substance | 1.21 | 0.2 | 8256 | 2 |
| phenobarbital controlled substance schedule | 1.5 | 1 | 5889 | 67 |
| why is phenobarbital a controlled substance | 1.93 | 0.1 | 6316 | 2 |
| is phenobarbital a controlled substance class | 0.26 | 0.5 | 3406 | 46 |
| phenobarbital is it a controlled substance | 0.66 | 0.2 | 8483 | 76 |
| phenobarbital controlled substance level | 1.19 | 0.5 | 7502 | 57 |
| phenobarbital controlled substance class | 1.32 | 0.6 | 8342 | 25 |
| phenobarb controlled substance schedule | 1.25 | 0.3 | 359 | 30 |
| phenobarbital schedule drug class | 0.4 | 0.5 | 2967 | 19 |
| phenobarbital drug classification schedule | 1.74 | 0.2 | 4715 | 42 |
| what schedule is phenobarbital | 0.84 | 0.8 | 4132 | 55 |
| what schedule drug is phenobarbital | 1.95 | 0.4 | 1525 | 80 |
| phenobarbital is classified in which schedule | 1.94 | 0.8 | 7663 | 14 |
| what schedule drug class is phenobarbital | 0.35 | 0.3 | 1760 | 72 |
| is phenobarbital a schedule 2 drug | 1.38 | 0.4 | 6838 | 25 |
| phenobarbital controlled drug class | 1.07 | 0.9 | 8542 | 28 |
| phenobarbital is it a controlled drug | 1.7 | 0.4 | 6910 | 14 |
| phenobarbital is it controlled | 0.98 | 0.2 | 6780 | 3 |
