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Herpes Zoster clinical trials

The registry lists 299 studies for Herpes Zoster across more than 10 countries. 55 are recruiting or about to start. 223 of them are mainly about Herpes Zoster (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12.

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Status

Completed
188
Recruiting
37
Status unknown
19
Active, not recruiting
18
Not yet recruiting
15
Terminated
12

Phase

Phase 3
70
Phase 2
69
Phase 1
46
Phase 4
33
Early Phase 1
3

Where

United States
95
China
51
Canada
22
Korea, Republic of
20
Australia
17
Germany
17

Who runs them

GlaxoSmithKline (43) · Merck Sharp & Dohme LLC (27) · Beijing Tiantan Hospital (12) · NeurogesX (9) · National Institute of Allergy and Infectious Diseases (NIAID) (6) · Tanta University (5) · MAXVAX Biotechnology Limited Liability Company (5) · Shanghai Institute Of Biological Products (4)

What is being tested here

Drugs under test in Herpes Zoster studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Shingrix72245
Esketamine202
CHO cell136
Herpes Zoster Vaccine134
Loxoprofen101
Flurbiprofen101
Brivudine101
Lacosamide101
Methotrexate101
Chickenpox Vaccine0828

Drug classes tested here Opioids 4

Coming up

7phase 3 studies under way
19studies finish main data collection within a year2 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 37 Herpes Zoster studies recruiting now, 26 (70%) set no upper age limit and 6 (16%) stop at 75 or younger. 3 (8%) take children under 18. 2 (5%) are for women only and 0 (0%) for men only; 13 (35%) take healthy volunteers.

Recruiting studies that take each age, of 37
AgeWomenMen
103 (8%)2 (5%)
1821 (57%)20 (54%)
3024 (65%)23 (62%)
4031 (84%)31 (84%)
5034 (92%)33 (89%)
6532 (86%)31 (84%)
7530 (81%)30 (81%)
8529 (78%)29 (78%)

Across all 299 studies, recruiting or not: 18% stop at 75 or younger and 9% at 65; 5% take children; 1% are for women only and <1% for men only; 44% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Herpes Zoster studies take

Of 40 phase 3 interventional studies under Herpes Zoster, half reached primary completion within 16 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 112 mo9–22 · 21 studies——
Phase 219 mo12–27 · 22 studies——
Phase 316 mo10–45 · 40 studies16 mo9–45 · 33 studies—
Phase 430 mo14–45 · 19 studies——
Interventional, no phase13 mo9–24 · 34 studies——

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Results posted1

Newly registered2

Studies

Recruiting first, then most recently updated. Showing 50 of 299. Browse all 299 → or search them.