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[Preprint]. 2026 Feb 16:2026.02.16.705192. [Version 1] doi: 10.64898/2026.02.16.705192

Table 1:

Dosing schemes for oral gavage FMT from rodent conspecifics in stress-related behavioral models

Disorder Investigated Animal Model Timeline/Duration Microbial Content Dose Reference
Chronic Stress mouse 1 and 4 days after antibiotic discontinuation (2 doses total) 1 mg feces in 5 mL PBS (phosphate buffer saline) 300 uL (Siopi et al., 2020)
Depression mouse 1x/day for 3 consecutive days (3 doses total) ~2 × 108 viable probiotic fecal bacteria in PBS 300 uL (Zhang et al., 2019)
Chronic unpredictable mild stress mouse 1x/2 days for 14 days (7 doses) Supernatant of cecal content diluted 40-fold in PBS 200 uL (Li et al., 2019)
Alcohol withdrawal-induced anxiety mouse 1x/day for 14 consecutive days (14 doses total Supernatant of 0.1g feces in 1mL saline 200 uL (Xiao et al., 2018)
Depression rat 1x/3 days for 16 days (6 doses total) 1 g feces in 5 mL saline 750 uL (Tillmann et al., 2019)
Depression rat 1x for 3 days (3 doses) 1g feces in 15 mL PBS 200 uL (Lv et al., 2019)
Social defeat rat 1x/5 days (5 doses) 5 mg feces in 1 mL PBS 2 mL (Pearson-Leary et al., 2020)