Supplement × Supplement·a synergy·Insufficient evidence

Ecdysterone + Vitamin D3

Synergy Insufficient evidence

Adequate vitamin D supports muscle function when deficient, but direct ecdysterone synergy is unproven.

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances
Pair type
Synergy
Evidence
Insufficient
Source citations
1
Scope
Supplement × Supplement
Last verified
June 4, 2026
SynergyInsufficient evidence

What is happening. Adequate vitamin D supports muscle function when deficient, but direct ecdysterone synergy is unproven.

Mechanism. Complementary musculoskeletal support mechanisms.

Recommendation. Correct deficiency rather than using high-dose vitamin D indiscriminately.

Stack Score

How it moves the number.

Effect on the composite score

If both Ecdysterone and Vitamin D3 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 at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1
  • 1Parr MK et al. Ecdysteroids review. Biol Sport. 2015.Needs sourceNo link

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