T
- t-butylnitazene
- T3
- T3CP
- Tadalafil
- Tadalafil, Amino
- Tamoxifen
- Tamoxifen-M (4-hydroxy metabolite)
- Tamsulosin
- Tapentadol
- TBCHA
- TBCHP
- TBCHPy
- tBuONE
- TCE
- TCM
- TCPr
- TCPy
- TDIQ
- Tebuconazole
- Tegaserod
- Telithromycin
- Telmisartan
- Temazepam
- Temazepam-M (glucuronide)
- Temephos
- Tenocyclidine
- Tenoxicam
- Terazosin
- Terbinafine
- Terbufos Sulfoxide
- Terbutaline
- Terfenadine
- Tertatolol
- Testolactone
- Testosterone
- Testosterone acetate
- Testosterone cypionate
- Testosterone decanoate
- Testosterone Enanthate
- Testosterone isobutyrate
- Testosterone isocaproate
- Testosterone pentanoate
- Testosterone phenylpropionate
- Testosterone propionate
- Testosterone undecanoate
- Tetrabenazine
- Tetracaine
- Tetracycline
- Tetrahydrofuran Fentanyl
- Tetrahydrofuran Fentanyl (THF fentanyl)
- Tetrahydrofuran Fentanyl 3-Tetrahydrofurancarboxamide
- Tetrahydrofuranfentanyl 3-tetrahydrofurancarboxamide (3-THF fentanyl)
- Tetrahydrofuranylfentanyl
- Tetrahydrothiophene Fentanyl
- Tetrahydrozoline
- Tetrazepam
- TFMPP
- TFMPP (m-Trifluorophenylpiperazine)
- Tiagabine
- Tianeptine
- Tianeptine-M MC5
- Tiapride
- Tiapride metabolite
- Tiaprofenic acid
- Ticagrelor
- Ticlopidine
- Tienilic acid
- Tigloyl Fentanyl
- Tiletamine
- Tilidine
- Tilidine, Nor
- Timolol
- Tiotropium
- Tizanidine
- TMA-2
- TMA-6
- Tofisopam
- Tolazamide
- Tolazoline
- Tolbutamide
- Toloxatone
- Tolterodine
- Tolufazepam
- Tolvaptan
- Topiramate
- Torasemide
- Tortuosamine
- Tramadol
- Tramadol - precursor
- Tramadol, N-Desmethyl
- Tramadol, O-Desmethyl
- Trandolapril
- Trandolaprilat
- Tranexamic acid
- trans-3-Methyl 4',para-Difluoro Fentanyl
- trans-3-Methyl Thiofentanyl
- trans-Cinnamoylcocaine
- Tranylcypromine
- Trazodone
- Trenbolone
- Trenbolone acetate
- Trenbolone enanthate
- Trenbolone hexahydrobenzylcarbonate
- Trenbolone, 16-beta
- Triadimefon
- Triamcinolone
- Triamcinolone acetonide
- Triamterene
- Triazolam
- Triazolam, Alpha hydroxy
- Tribenuron methyl
- Trichlormethiazide
- Tricyclazole
- Trifloxystrobin
- Triflubazam
- Triflunordazepam
- Trifluoperazine
- Trifluoromethyldeschloroketamine
- Triflupromazine
- Trimetazidine
- Trimethoprim
- Trimipramine
- Tripelennamine
- Triprolidine
- Tritoqualine
- Tropacocaine
- Troparil
- Tropicamide
- Trovafloxacin
- Tryptamine
- Tryptophan
- Tuclazepam
- Tulobuterol
- Tyrosine