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. 2020 Jul 7;3(1):61–73. doi: 10.1159/000507998

Table 3.

Narrow Therapeutic Index (NTI) and cannabinoid medications with protein binding ≥85%

NTI medications Protein binding ≥85%
amphotericin B >90
cannabidiola, b >94
cyclosporine 90
dronabinola, b 97
levothyroxine >99
nabilonea, b Highlyc
nabiximolsa, b >94
phenytoin 90
quinidine 88
tacrolimus >99
valproic acid 85
warfarin (VKA) 99

VKA, vitamin K antagonist; PI, prescribing information.

a

Not considered an NTI.

b

Cannabinoid medication.

c

As defined by nabilone (Cesamet®) PI.