Drug Interactions Directory
2,618 drugs with documented interactions.
2,618Drugs
67,117Interactions
53,805Serious (major+)
PharmacistReviewed
1Look up a drugSearch by generic or brand name, or browse A-Z.
2Scan the severityInteractions are grouped and color-coded by how much they matter.
3Read the write-upPlain-English and clinical explanations, with cited evidence.
Popular:
Buprenorphine
633
Hydroxychloroquine
631
Ketoconazole Topical
546
Cyclosporine Injection
545
Cyclosporine Ophthalmic
545
Sertraline
532
Amitriptyline
525
Fentanyl Transdermal Patch
493
Your recent:
Sources: FDA prescribing information (Structured Product Labeling), the published literature cited in each entry, DDInter 2.0 (a major open-access drug-interaction database), and legacy DrugBank interaction data distributed by the NIH's RxNav service (decommissioned in 2024) — analyzed and reviewed by our pharmacist team. How we build this library →
T
Tetrahydrozoline Hydrochloride
1
Tetrazepam
7
Tezacaftor
15
Thalidomide
8
Theophylline
46
Thiabendazole
1
Thiamine
5
Thiethylperazine
26
Thimerosal
1
Thioctic Acid
20
Thioguanine
3
Thiopental
32
Thiopropazate
21
Thioproperazine
5
Thioridazine
117
Thiotepa
8
Thiothixene
15
Thonzylamine
1
Thyroglobulin
1
Tiagabine
3
Tiagabine Hydrochloride
2
Tianeptine
47
Tiapride
2
Tiaprofenic Acid
91
Tibolone
12
Ticagrelor
90
Ticarcillin
13
Tick-Borne Encephalitis Vaccine
2
Ticlopidine
61
Ticrynafen
3
Tigecycline
26
Tildrakizumab
3
Tilidine
27
Tiludronate
2
Timiperone
2
Timolol
60
Tinidazole
10
Tinzaparin
52
Tiotropium
19
Tipranavir
62
Tirofiban
52
Tirzepatide
13
Tivozanib
2
Tizanidine
59
Tobacco
1
Tobramycin
20
Tocainide
1
Tocilizumab
39
Tofacitinib
9
Tolazamide
58
Tolazoline
4
Tolbutamide
68
Tolcapone
7
Tolfenamic Acid
91
Tolmetin
91
Tolonium Chloride
19
Toloxatone
4
Tolperisone
1
Tolterodine
59
Tolvaptan
44
Topiramate
51
Topotecan
17
Toremifene
62
Torsemide
61
Tosufloxacin
9
Tovorafenib
43
Trabectedin
4
Tradipitant
1
Tramadol
167
Tramazoline
1
Trandolapril
62
Tranexamic Acid
7
Tranylcypromine
77
Trastuzumab
4
Travoprost
1
Trazodone
124
Treosulfan
36
Treprostinil
54
Tretinoin
15
Triamcinolone
22
Triamterene
68
Triazolam
39
Trichlormethiazide
52
Triclabendazole
70
Trifluoperazine
50
Trifluperidol
19
Triflupromazine
30
Triheptanoin
1
Trihexyphenidyl
12
Trilaciclib
4
Trimazosin
16
Trimeprazine
25
Trimethaphan
1
Trimethoprim
48
Trimetrexate
9
Trimipramine
111
Tripelennamine
1
Triprolidine
1
Triptorelin
63
Trofinetide
43
Troglitazone
11
Trolamine Salicylate
16
Troleandomycin
65
Tropicamide
12
Tropisetron
1
Trospium
14
Trospium / Xanomeline
122
Trovafloxacin
19
Trovafloxacin Mesylate
2
Tryptophan
18
Tuberculin
6
Tubocurarine
17
Tucatinib
81
Turmeric
18
Typhoid Vaccine
169
Typhoid Vaccine, Live
73
Typhoid Vi Polysaccharide Vaccine
2
Tyrosine
2