Interaction databaseSupplement × SupplementReviewed May 2026

Calcium and L-Lysine, a synergy.

L-lysine can enhance intestinal calcium absorption and reduce urinary calcium excretion, supporting calcium retention.

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.

Sourcing standards·Evidence tiers

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
Calcium and L-Lysine
Pair type
Synergy
Evidence (highest tier)
Emerging
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 · Emerging evidence

Synergy

What is happening. L-lysine can enhance intestinal calcium absorption and reduce urinary calcium excretion, supporting calcium retention.

Mechanism. Lysine increases gastrointestinal calcium absorption and promotes renal tubular calcium reabsorption, improving net calcium balance.

Recommendation. Can be taken together; lysine may improve the efficiency of calcium uptake when bone or calcium support is the goal.

Sources (1)
  1. Civitelli R et al, Dietary L-lysine and calcium metabolism in humans, Nutrition, 1992

Stack Score

How this pair moves the number.

Effect on the composite score

If both Calcium and L-Lysine 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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