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H2: The "Independent vs Interactive" Question
Once a researcher combines two compounds, a second question emerges: do their effects simply add together, or do they interact in ways that produce non-additive effects? This is the classical pharmacological distinction between: Additivity: the combined effect
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- Once a researcher combines two compounds, a second question emerges: do their effects simply add together, or do they interact in ways that produce non-additive effects?
- This is the classical pharmacological distinction between:
- Additivity: the combined effect equals the sum of the individual effects
- Synergy: the combined effect exceeds the sum (greater than additive)
- Antagonism: the combined effect is less than the sum
- Distinguishing these requires specific experimental designs and analytical frameworks (Tang et al., 2015). Most exploratory stack research in the preclinical literature is hypothesis-generating rather than definitive on this distinction.