The effects of the DDS-1 strain of lactobacillus on symptomatic relief for lactose intolerance - a randomized, double-blind, placebo-controlled, crossover clinical trial

Table 2 Visit schedule

Protocol Activity	V1 (Screening)	V1.5 (Screening)	V2 (Arm 1)	V3 (Arm 1)	V4 (Arm 1)	V5 (Arm 2)	V6 (Arm 2)	V7 (Arm 2)
	Week (−2)		Week 0	Week 2	Week 4	Week 0	Week 2	Week 4
Informed consent process	x
Inclusion/Exclusion	x
Medical history & physical exam	x
Vital signs	x	x	x	x	x	x	x	x
Urine pregnancy test	x
Standardized meals	x	x	x	x	x	x	x
Administer & review scales and questionnaires			x	x	x	x	x	x
Review concomitant therapies		x	x	x	x	x	x	x
Intercurrent medical issues review		x	x	x	x	x	x	x
Randomization/study product preparation & dispensing			x	x		x	x
Hydrogen breath test		x	x	x	x	x	x	x
Fecal collection			x	x	x	x	x	x

ISSN: 1475-2891