DFDA

Famciclovir

Treatment for Varicella And Herpes Zoster

Typical Dosage: 500mg three times daily for 7 days

Effectiveness
86%
Safety Score
68%
Clinical Trials
5
Participants
10K

Comparative Safety Scale(Higher is safer)

Cyanide☠️
Meth💀
Cigarettes🚬
Chemo☢️
Alcohol🍺
Morphine💊
Antibiotics💉
Tylenol💊
Exercise🏃
Water💧
68
DangerousModerateSafe
Treatment Details
Dosage Range
500mg three times daily for 7 days
Time to Effect
24-48 hours
Treatment Duration
7 days
Evidence Quality
HIGH
Number Needed to Treat (NNT)
12(Treat 12 patients to see 1 additional successful outcome)
Number Needed to Harm (NNH)
1000(Treat 1000 patients to see 1 additional serious adverse event)
Confidence Score
90%confidence in effectiveness data
Health Economics
Annual Cost of Care
Drug Cost:$50
Monitoring:$100
Side Effect Mgmt:$10
Total Annual:$160
Cost-Effectiveness Analysis
Cost-Effectiveness Rating
GOOD
QALYs Gained
0.04
Outcome-Based Costs
Cost per Responder
$213
Cost per Remission
$178
Comparison vs Acyclovir
Cost Difference
+$20/year
More expensive
QALY Difference
+0.01 QALYs
Better outcomes
Dominance
No dominance
Famciclovir Outcomes

for Varicella And Herpes Zoster

Efficacy Outcomes
Overall Effectiveness
+86%
Response Rate
+75%
Remission Rate
+90%
Common Side Effects
Headache
+15%
Nausea
+10%
Diarrhea
+5%

Sources:

nih.gov
researchgate.net
researchgate.net

WARNING: LIMITED TRIALS AVAILABLE

You can search for trials, but you probably can't join any because the 1% Treaty hasn't passed yet. Most trials are severely limited by lack of funding and bureaucratic barriers. Help change this!

Active Clinical Trials
2 active trials recruiting for Famciclovir in Varicella And Herpes Zoster

Efficacy and Safety of Brivudine in the Treatment of Herpes Zoster

NCT07099157RECRUITINGPHASE4
View Study
140 participants
INTERVENTIONAL
Beijing, China +3 more
Started: Aug 25, 2025

Multimodal Nerve Block and Pulse Radiofrequency for Acute Herpes Zoster Pain

NCT06798662NOT YET RECRUITINGNA
View Study
120 participants
INTERVENTIONAL
Baotou, China
Started: Feb 1, 2025
Completed Clinical Trials
2 completed trials for Famciclovir in Varicella And Herpes Zoster

Famciclovir Oral Pediatric Formulation in Children 1-12 Years of Age With Varicella Zoster Infection

NCT00098046COMPLETEDPHASE3
View Study
76 participants
INTERVENTIONAL
New York, United States +4 more
Started: Jul 1, 2005

Efficacy of Oral Famciclovir Versus Aciclovir Treatment in Patients With Herpes Zoster

NCT01327144COMPLETEDPHASE3
View Study
177 participants
INTERVENTIONAL
Porto Alegre, Brazil +4 more
Started: Jun 1, 2012