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. 2021 Nov 11;29(2):449–467. doi: 10.1007/s40199-021-00422-8

Table 2.

Target interventions of published COVID-19 RCTs for each region

African Region
ChAdOx1 nCoV-19 vaccine
Region of Americas

HCQ (*6)

convalescent plasma (*5)

bamlanivimab (*3)

ACE-Inh or ARB (*3)

remdesivir (*3)

tocilizumab (*3)

HCQ|¥HCQ + azithromycin (*2)

azithromycin

canakinumab

dexamethasone

methylprednisolone

fluvoxamine

NAC

pentoxifylline

proxalutamide

ivermectin

stem cell therapy

enoxaparin

rivaroxaban

sulodexide

ravulizumab

vitamin D3

HCQ|ivermectin

vitamin C + zinc

HCQ|LPV/r|HCQ + LPV/r

HCQ|azithromycin

dutasteride|azithromycin|nitazoxanide

Herbal agents:

brazilian green propolis

South East Asia Region

convalescent plasma (*2)

CQ

remdesivir

favipiravir

ivermectin

tocilizumab

itolizumab

vitamin D3

stem cell therapy

azithromycin|LPV/r|LPV/r + azithromycin|LPV/r + doxycycline

Herbal agents:

ayurvedic agents

siddha drugs

chyawanprash

curcumine + piperine

European Region

HCQ (*4)

tocilizumab (*3)

remdesivir (*2)

favipiravir (*2)

hydrocortisone (*2)

convalescent plasma (*2)

ivermectin (*2)

azithromycin

chlorpromazine

budesonide

immunoglobulin

camostat mesilate

auxora

dexamethasone

LPV/r

ramipril

umifenovir

anakinra

colchicine

vitamin D3

SNG001

valsartan

NAC

vilobelimab

HCQ + azithromycin

tenofovir + emtricitabine

azithromycin|lincomycin

darunavir-ritonavir|LPV/r

colchicine|ruxolitinib|secukinumab

methylprednisolone + tacrolimus

remdesvir|LPV/r|IFN|HCQ|AZD7442

BCG vaccines

BNT162b2 vaccine (*2)

ChAdOx1 nCoV-19 vaccine (*3)

Herbal agents:

quercetin (*2)

Eastern Mediterranean Region

sofosbuvir + daclatasvir (*4)

ivermectin (*4)

convalescent plasma (*3)

favipiravir (*2)

HCQ (*2)

IFN (*2)

umifenovir (*2)

immunoglobulin (*2)

methylprednisolone

azithromycin

bromhexine

febuxostat

dexamethasone

diphenhydramine

multivitamin

mometasone

NAC

L-cysteine

levamisole

omega-3

vitamin C

vitamin D3

melatonin

sofosbuvir + ledipasvir

sofosbuvir + daclatasvir + ribavirin

vitamin C + NAC

HCQ + LPV/r| IFN β-1A|IFN β-1B

IFN β-1A + LPV/r

sofosbuvir + daclatasvir + ribavirin

vitamin C + NAC

losartan|amilodipine

methylprednisolone|dexamethasone

methylprednisolone|methylprednisolone + tocilizumab

enoxaparin|heparin|atorvastatin

Herbal agents:

zinger + echinacea

hyoscyamus niger

Western Pacific Region

COVID-19 vaccine (*5)

HCQ or CQ (*3)

IFN (*3)

convalescent plasma (*3)

LPV/r (*2)

rhG-CSF (*2)

favipiravir (*2)

azvudine

bromhexine

leflunomide

remdesivir

ruxolitinib

triazavirin

stem cell therapy

telmisartan

zinc

LPV/r|CQ (*2)

IFN + TFF2

darunavir|cobicistat

ribavirin + LPV/r + IFN

ribavirin + IFN + LPV/r

baloxavir marboxil|favipiravir

favipiravir|tocilizumab|favipiravir + tocilizumab

Herbal agents:

xuebijing (*2)

shenhuang granule (*2)

xuanfei baidu

keguan-1

lianhuaqingwen

coconut oil

huoxiangzhengqi + lianhuaqingwen|lianhuaqingwen

shuanghuanglian oil

xiyanping

honeysuckle + gardenia + abrotani

traditional chinese herbal formula

Collaboration between regions

remdesivir (*3)

HCQ or CQ (*2)

remdesivir|LPV/r + IFN|IFN|HCQ|LPV/r

bromhexine

convalescent plasma

hydrocortisone

(*N): Number of repeated items

¥: different arms of RCTs are separated by "|"

Abbreviations: HCQ hydroxychloroquine, ACE-Inh angiotensin-converting enzyme (ACE) inhibitors, ARB angiotensin receptor blockers, NAC N-acetyl cysteine, LPV/r lopinavir-ritonavir, BCG bacille Calmette-Guerin, CQ chloroquine, IFN interferon, rhG-CSF the recombinant human granulocyte colony-stimulating factor, TFF2 trefoil peptide