The following drugs will decrease citalopram effect

#	enzyme	inducers
0	3A457	barbiturates
1	3A457	brigatinib
2	2C19	carbamazepine
3	3A457	carbamazepine
4	3A457	clobazam
5	3A457	dabrafenib
6	2C19	efavirenz
7	3A457	efavirenz
8	2C19	enzalutamide
9	3A457	elagolix
10	3A457	enzalutamide
11	3A457	eslicarbazepine
12	3A457	glucocorticoids
13	3A457	letermovir
14	3A457	lorlatinib
15	3A457	modafinil
16	3A457	nevirapine
17	3A457	oxcarbazepine
18	2C19	norethindrone
19	3A457	perampanel
20	2C19	prednisone
21	2C19	rifampicin
22	3A457	phenobarbital
23	2C19	ritonavir
24	3A457	phenytoin
25	3A457	pioglitazone
26	3A457	rifabutin
27	3A457	rifampin
28	3A457	St. John's Wort
29	3A457	telotristat
30	3A457	troglitazone
31	3A457	vemurafenib

the follwing drugs will Increase citalopram effect

#	enzyme	Inhibitors	level
0	2D6	abiraterone	Moderate inhibitor
1	2D6	amiodarone	Weak inhibitor
2	3A457	amiodarone	under review
3	3A457	aprepitant	Moderate inhibitor
4	2C19	armodafinil	Weak inhibitor
5	3A457	atomoxetine
6	3A457	boceprevir	under review
7	2D6	bupropion	Strong inhibitor
8	2D6	celecoxib	Weak inhibitor
9	3A457	ceritinib	Strong inhibitor
10	2C19	chloramphenicol	In-Vitro Only
11	3A457	chloramphenicol	In-Vitro Only
12	2D6	chlorpromazine	In-Vitro Only
13	2C19	cimetidine	Weak inhibitor
14	2D6	cimetidine	Weak inhibitor
15	3A457	cimetidine
16	2D6	cinacalcet	Moderate inhibitor
17	3A457	ciprofloxacin	under review
18	2D6	citalopram	Weak inhibitor
19	3A457	clarithromycin	Strong inhibitor
20	2D6	clemastine	In-Vitro Only
21	2D6	clobazam
22	2D6	clomipramine
23	2D6	cocaine	In-Vitro Only
24	3A457	crizotinib	Moderate inhibitor
25	3A457	delaviridine	under review
26	3A457	diethyl-dithiocarbamate
27	3A457	diltiazem	Moderate inhibitor
28	2D6	diphenhydramine
29	2D6	doxepin	Moderate inhibitor
30	2D6	duloxetine	Moderate inhibitor
31	3A457	entrectinib
32	3A457	erythromycin	Moderate inhibitor
33	2D6	escitalopram
34	2C19	esomeprazole	Weak inhibitor
35	3A457	esomeprazole
36	2C19	felbamate	Weak inhibitor
37	2C19	fluconazole	Moderate inhibitor
38	3A457	fluconazole	Moderate inhibitor
39	2C19	fluoxetine	Moderate inhibitor
40	2D6	fluoxetine	Strong inhibitor
41	2C19	fluvoxamine	Strong inhibitor
42	3A457	fluvoxamine	under review
43	3A457	gestodene	under review
44	3A457	grapefruit juice	Moderate inhibitor
45	2D6	halofantrine	Moderate inhibitor
46	2D6	haloperidol	In-Vitro Only
47	2D6	hydroxyzine	In-Vitro Only
48	3A457	idelalisib	Strong inhibitor
49	3A457	imatinib	under review
50	3A457	indinavir	Strong inhibitor
51	2C19	isoniazid	Weak inhibitor
52	3A457	itraconazole	Strong inhibitor
53	3A457	ivacaftor
54	2C19	ketoconazole	Moderate inhibitor
55	3A457	ketoconazole	Strong inhibitor
56	3A457	lesinurad
57	3A457	letermovir
58	2D6	levomepromazine
59	2D6	lorcaserin	Moderate inhibitor
60	2C19	luliconazole	Weak inhibitor
61	2D6	methadone	under review
62	2D6	metoclopramide	In-Vitro Only
63	3A457	mibefradil	Strong inhibitor
64	2D6	midodrine
65	3A457	mifepristone	under review
66	2D6	moclobemide	Moderate inhibitor
67	2C19	modafinil	Weak inhibitor
68	3A457	nefazodone	Strong inhibitor
69	3A457	nelfinavir	Strong inhibitor
70	3A457	netupitant/palonosetron	Moderate inhibitor
71	3A457	norfloxacin	under review
72	3A457	norfluoxetine	under review
73	2C19	omeprazole	Weak inhibitor
74	3A457	omeprazole	Weak inhibitor
75	2C19	oral contraceptives	Weak inhibitor
76	2C19	oritavancin	In-Vitro Only
77	2D6	panobinostat	under review
78	2C19	pantoprazole	Weak inhibitor
79	3A457	pantoprazole
80	2D6	paroxetine	Strong inhibitor
81	3A457	perampanel
82	2D6	perphenazine	In-Vitro Only
83	2D6	promethazine	under review
84	2C19	quercetin	In-Vitro Only
85	3A457	quercetin
86	2D6	quinidine	Strong inhibitor
87	3A457	regorafenib	under review
88	3A457	ribociclib	Strong inhibitor
89	2D6	ritonavir
90	3A457	ritonavir	Strong inhibitor
91	2D6	rolapitant	Moderate inhibitor
92	3A457	rucaparib
93	3A457	saquinavir	Strong inhibitor
94	2D6	sertraline
95	3A457	simeprevir
96	3A457	starfruit	under review
97	3A457	telaprevir	under review
98	3A457	telithromycin	Strong inhibitor
99	2D6	terbinafine (oral)	Moderate inhibitor
100	3A457	ticagrelor
101	2C19	ticlopidine	Strong inhibitor
102	2D6	ticlopidine	In-Vitro Only
103	2C19	topiramate	under review
104	2D6	tripelennamine	In-Vitro Only
105	3A457	tucatinib	Strong inhibitor
106	2D6	vemurafenib
107	3A457	verapamil	Moderate inhibitor
108	2C19	voriconazole	Moderate inhibitor
109	3A457	voriconazole	Strong inhibitor

The follwing drugs will Increase effect by citalopram effect

#	enzyme	drug	level
1	1A2	acetaminophen	Weak inhibitor
2	2D6	alprenolol	Weak inhibitor
3	2D6	amitriptyline	Weak inhibitor
4	1A2	amitriptyline	Weak inhibitor
5	2C19	amitriptyline	Weak inhibitor
6	2D6	amphetamine	Weak inhibitor
7	1A2	apremilast	Weak inhibitor
8	2D6	atomoxetine	Weak inhibitor
9	2C19	atomoxetine	Weak inhibitor
10	2D6	brexpiprazole	Weak inhibitor
11	2C19	brivaracetam	Weak inhibitor
12	2D6	bufuralol	Weak inhibitor
13	1A2	caffeine	Weak inhibitor
14	2D6	cariprazine	Weak inhibitor
15	2C19	carisoprodol	Weak inhibitor
16	2D6	carvedilol	Weak inhibitor
17	2C19	celecoxib	Weak inhibitor
18	2C19	chloramphenicol	Weak inhibitor
19	2D6	chlorpheniramine	Weak inhibitor
20	2D6	chlorpromazine	Weak inhibitor
21	2D6	citalopram	Weak inhibitor
22	2C19	clobazam	Weak inhibitor
23	2D6	clomipramine	Weak inhibitor
24	1A2	clomipramine	Weak inhibitor
25	2C19	clomipramine	Weak inhibitor
26	2D6	clonidine	Weak inhibitor
27	2C19	clopidogrel	Weak inhibitor
28	1A2	clozapine	Weak inhibitor
29	2D6	codeine	Weak inhibitor
30	1A2	cyclobenzaprine	Weak inhibitor
31	2C19	cyclophosphamide	Weak inhibitor
32	2D6	debrisoquine	Weak inhibitor
33	2D6	desipramine	Weak inhibitor
34	2D6	deutetrabenazine	Weak inhibitor
35	2D6	dexfenfluramine	Weak inhibitor
36	2D6	dextromethorphan	Weak inhibitor
37	2C19	diazepam	Weak inhibitor
38	2D6	donepezil	Weak inhibitor
39	2D6	doxepin	Weak inhibitor
40	1A2	doxepin	Weak inhibitor
41	2C19	doxepin	Weak inhibitor
42	1A2	duloxetine	Weak inhibitor
43	2D6	eliglustat	Weak inhibitor
44	2D6	encainide	Weak inhibitor
45	2D6	escitalopram	Weak inhibitor
46	2C19	escitalopram	Weak inhibitor
47	2C19	esomeprazole	Weak inhibitor
48	1A2	estradiol	Weak inhibitor
49	2D6	flecainide	Weak inhibitor
50	2C19	flibanserin	Weak inhibitor
51	2D6	fluoxetine	Weak inhibitor
52	2D6	fluvoxamine	Weak inhibitor
53	1A2	fluvoxamine	Weak inhibitor
54	1A2	haloperidol	Weak inhibitor
55	2C19	hexobarbital	Weak inhibitor
56	2D6	ibrutinib	Weak inhibitor
57	2D6	imipramine	Weak inhibitor
58	1A2	imipramine	Weak inhibitor
59	2C19	imipramine	Weak inhibitor
60	2C19	indomethacin	Weak inhibitor
61	2C19	labetalol	Weak inhibitor
62	2C19	lansoprazole	Weak inhibitor
63	2D6	lidocaine	Weak inhibitor
64	2C19	mavacamten	Weak inhibitor
65	2D6	metoclopramide	Weak inhibitor
66	2D6	metoprolol	Weak inhibitor
67	2D6	mexiletine	Weak inhibitor
68	1A2	mexiletine	Weak inhibitor
69	2D6	minaprine	Weak inhibitor
70	2C19	moclobemide	Weak inhibitor
71	1A2	nabumetone	Weak inhibitor
72	1A2	naproxen	Weak inhibitor
73	2D6	nebivolol	Weak inhibitor
74	2C19	nelfinavir	Weak inhibitor
75	2C19	nilutamide	Weak inhibitor
76	2D6	nortriptyline	Weak inhibitor
77	1A2	olanzapine	Weak inhibitor
78	2C19	omeprazole	Weak inhibitor
79	2D6	ondansetron	Weak inhibitor
80	1A2	ondansetron	Weak inhibitor
81	2C19	ospemifene	Weak inhibitor
82	2D6	oxycodone	Weak inhibitor
83	2C19	pantoprazole	Weak inhibitor
84	2D6	paroxetine	Weak inhibitor
85	2D6	perhexiline	Weak inhibitor
86	2D6	perphenazine	Weak inhibitor
87	2D6	phenacetin	Weak inhibitor
88	1A2	phenacetin	Weak inhibitor
89	2C19	phenobarbitone	Weak inhibitor
90	2C19	phenytoin	Weak inhibitor
91	2D6	pimavanserin	Weak inhibitor
92	1A2	pirfenidone	Weak inhibitor
93	1A2	pomalidomide	Weak inhibitor
94	2C19	pomalidomide	Weak inhibitor
95	2D6	ponatinib	Weak inhibitor
96	2C19	primidone	Weak inhibitor
97	2C19	progesterone	Weak inhibitor
98	2C19	proguanil	Weak inhibitor
99	2D6	promethazine	Weak inhibitor
100	2D6	propafenone	Weak inhibitor
101	2D6	propranolol	Weak inhibitor
102	1A2	propranolol	Weak inhibitor
103	2C19	propranolol	Weak inhibitor
104	2C19	r-mephobarbital	Weak inhibitor
105	2C19	r-warfarin	Weak inhibitor
106	1A2	riluzole	Weak inhibitor
107	2D6	risperidone	Weak inhibitor
108	1A2	roflumilast	Weak inhibitor
109	1A2	ropivacaine	Weak inhibitor
110	2D6	rucaparib	Weak inhibitor
111	1A2	rucaparib	Weak inhibitor
112	2C19	s-mephenytoin	Weak inhibitor
113	2D6	sparteine	Weak inhibitor
114	2C19	suvorexant	Weak inhibitor
115	1A2	tacrine	Weak inhibitor
116	2D6	tamoxifen	Weak inhibitor
117	1A2	tasimelteon	Weak inhibitor
118	2C19	teniposide	Weak inhibitor
119	2D6	tetrabenzine	Weak inhibitor
120	1A2	theophylline	Weak inhibitor
121	2D6	thioridazine	Weak inhibitor
122	2D6	timolol	Weak inhibitor
123	1A2	tizanidine	Weak inhibitor
124	2C19	tofacitinib	Weak inhibitor
125	2D6	tramadol	Weak inhibitor
126	1A2	triamterene	Weak inhibitor
127	2D6	umeclidinium	Weak inhibitor
128	2D6	valbenazine	Weak inhibitor
129	2D6	venlafaxine	Weak inhibitor
130	2C19	venlafaxine	Weak inhibitor
131	1A2	verapamil	Weak inhibitor
132	2D6	vilazodone	Weak inhibitor
133	2C19	vilazodone	Weak inhibitor
134	2C19	voriconazole	Weak inhibitor
135	1A2	warfarin	Weak inhibitor
136	1A2	zileuton	Weak inhibitor
137	1A2	zolmitriptan	Weak inhibitor
138	2D6	zuclopenthixol	Weak inhibitor

will decrease citalopram effect

#

enzyme

inducers

citalopram will not affect

Strong inhibitor is one that causes a ≥ 5-fold decrease in the plasma AUC values or more than 80% decrease in clearance.
Moderate inhibitor is one that causes a 2 fold to < 5-fold decrease in the plasma AUC values or 50-80% decrease in clearance.
Weak inhibitor is one that causes a ≥ 1.25-fold but < 2-fold decrease in the plasma AUC values or 20-50% decrease in clearance.
In-Vitro Only In-Vitro Only Inhibitor strength.
under review Inhibitor strength level is under review.