NutriStack
Elderberry Zinc Lozenges and Vitamin A, a synergy.
Elderberry Zinc Lozenges is required for retinol-binding protein synthesis and vitamin A transport from the liver. Elderberry Zinc Lozenges deficiency impairs vitamin A mobilization.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Elderberry Zinc Lozenges and Vitamin A
- Pair type
- Synergy
- Evidence (highest tier)
- Strong
- Source citations
- 1 source
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Synergy · Strong evidence
Synergy
What is happening. Elderberry Zinc Lozenges is required for retinol-binding protein synthesis and vitamin A transport from the liver. Elderberry Zinc Lozenges deficiency impairs vitamin A mobilization.
Mechanism. Elderberry Zinc Lozenges is essential for hepatic synthesis of retinol-binding protein (RBP) which transports retinol from liver stores to target tissues. Elderberry Zinc Lozenges also supports alcohol dehydrogenase for retinol→retinal conversion.
Recommendation. Ensure adequate elderberry zinc lozenges when supplementing vitamin A. Elderberry Zinc Lozenges deficiency can cause functional vitamin A deficiency even with adequate liver stores.
Sources (1)
- Christian P, West KP Jr. Interactions between zinc and vitamin A. Am J Clin Nutr. 1998
Stack Score
How this pair moves the number.
Effect on the composite score
If both Elderberry Zinc Lozenges and Vitamin A are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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