Table 1. Details of clinical trials on drug candidates against COVID-19 (ClinicalTrials.gov)

	Intervention/treatment	Study type/phase	Primary purpose	Number of participants
1	Remdesivir	Interventional	Treatment	453
2	Remdesivir	Interventional	Treatment	308
3	Remdesivir	Expanded access	Treatment
4	Remdesivir	Interventional	Treatment	400
5	Remdesivir	Interventional	Treatment	600
6	Remdesivir	Expanded access	Treatment	-
7	Remdesivir	Interventional	Treatment	440
8	Hydroxychloroquine	Interventional phase 3	Treatment	440
9	Hydroxychloroquine/remdesivir	Interventional	Treatment	700
10	Chloroquine/hydroxychloroquine	Interventional phase 2	Prevention	55,000
11	Chloroquinephosphate	Interventional	Treatment	250
12	Chloroquine	Interventional phase 2, 3	Treatment	210
13	Chloroquinephosphate	Interventional phase 3	Treatment	400
14	Chloroquineor/hydroxychloroquine	Interventional	Prevention	4,000
15	Chloroquineanalog/nivolumab/tocilizumab	Interventional phase 2	Treatment	273
16	Chloroquine/diphosphate	Interventional phase 2	Treatment	440
17	Azithromycin/chloroquine	Interventional phase 3	Treatment	1,500
18	Azithromycin/hydroxychloroquine	Interventional phase 4	Treatment	226
19	Darunavir/hydroxychloroquine	Interventional phase 3	Treatment	3,040
20	Hydroxychloroquine	Interventional phase 3	Treatment	2,486
21	Hydroxychloroquine	Interventional	Treatment	220
22	Hydroxychloroquine/azithromycin	Interventional phase 3	Treatment	440
23	Hydroxychloroquine	Interventional	Treatment	1,300
24	Levamisole/budesonide/formoterol, lopinavir/ritonavir/hydroxychloroquine	Interventional phase 2, 3	Treatment	30
25	Carrimycin/lopinavir/ritonavir/arbidol chloroquinephosphate	Interventional phase 4	Treatment	520
26	Oseltamivir/hydroxychloroquine lopipinavir/ritonavir/darunavir/favipiravir	Interventional phase 3	Treatment	80
27	Favipiravir	Interventional	Treatment	210
28	Favipiravir	Interventional phase 3	Treatment	100
29	Arbidol	Interventional phase 4	Treatment	380
30	ASC09 (novel investigational protease inhibitor) lopinavir/ritonavir	Interventional	Treatment	160
31	Lopinavir/ritonavir/hydroxychloroquine	Interventional phase 2	Treatment	150
32	Lopinavir/ritonavir	Interventional phase 2	Treatment	440
33	Hydroxychloroquine/lopinavir/ritonavir	Interventional phase 3	Treatment	1,200
34	Hydroxychloroquine/oseltamivir/azithromycin	Interventional phase 3	Treatment	500
35	Lopinavir/ritonavir/hydroxychloroquine Losartan	Interventional phase 2,3	Treatment	4,000
36	Abidolhydrochloride/oseltamivir/lopinavir/ritonavir	Interventional phase 4	Treatment	400
37	Lopinavir/ritonavir tablets/xiyanping injection	Interventional	Treatment	80
38	Lopinavir/ritonavir and traditional Chinese medicines	Interventional	Treatment	150
39	Methylprednisolone	Interventional phase 2	Treatment	104
40	Colchicine	Interventional phase 3	Treatment	2,500
41	Angiotensin1-7	Interventional phase 2, 3	Treatment	60
42	Thalidomide	Interventional phase 2	Treatment	40
43	Thalidomide	Interventional phase 2	Treatment	100
44	Dietary supplement:natural honey	Interventional phase 3	Treatment	1,000