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What is the accelerated storage condition for stability studies?

Stability testing & climatic zones · Accelerated condition. Verbatim excerpts from each authority's document, with the section.

SFDA Saudi Food and Drug Authority

GCC Stability Guidelines v3.3 (2018) — archived copy

Accelerated 40 °C ± 2 °C/ 75% RH ± 5% RH 6 monthsGCC v3.3 (archived) · 3.2.6.1 General case (FPP table) ↗
Accelerated 40 °C ± 2 °C/ 75% RH± 5% RH 6 monthsGCC v3.3 (archived) · 3.1.7.1 General case (API table) ↗

EU European Union

ICH Q1A(R2) · EMA guidelines

Accelerated 40°C ± 2°C/75% RH ± 5% RH 6 monthsICH Q1A(R2) · 2.2.7.1 General case (table) ↗
Accelerated 40° C ± 2° C/75% RH ± 5% RH 6 monthsEMA existing actives · 2.2.7.1 General case (table) ↗

US FDA US Food and Drug Administration

Q1A(R2) · Q1E · ANDA guidance

Accelerated 40°C ± 2°C/75% RH ± 5% RH 6 monthsFDA Q1A(R2) · 2.2.7.1 (table) ↗
Accelerated testing: Studies designed to increase the rate of chemical degradation or physical change of a drug substance or drug product by using exaggerated storage conditions as part of the formal stability studies.FDA Q1A(R2) · 3 (Glossary) ↗

WHO World Health Organization

TRS 1010 Annex 10 · zone table

Accelerated 40 °C ± 2 °C/75% RH ± 5% RH 6 monthsWHO TRS 1010 Annex 10 · 2.2.7.1 General case (table) ↗

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Excerpts are selected for comparison and are not the whole requirement; the binding text is each authority's current official document. Not regulatory advice.