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World J Methodol. Dec 20, 2025; 15(4): 107643
Published online Dec 20, 2025. doi: 10.5662/wjm.v15.i4.107643
Table 1 Distinction between biologics vs small molecules in inflammatory bowel disease
Feature
Biologics
Small molecules
Route of administrationIV-SubcutaneousOral
Risk of immunogenicityHighLow
Onset of actionModerate to slowFast
Long-term safetyDocumentedLow data
CostVariableHigh
Combination useImmunomodulatorsBiologics (some)