Real ChatGPT answer · index seedelooyNfSOLEcompleteHealth and wellness · supplements and vitaminscomparison

My doctor told me my vitamin D levels are low and I want to know if taking cholecalciferol D3 is more effective than ergocalciferol D2 for combating seasonal depression during long winter months

ChatGPTgpt-62 queries10/31/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
My doctor told me my vitamin D levels are low and I want to know if taking cholecalciferol D3 is more effective than ergocalciferol D2 for combating seasonal depression during long winter months
2 real searches · 1 real-search pass
vitamin D3 versus D2 randomized trials systematic review serum 25-hydroxyvitamin D seasonal affective disorder evidence vitamin D supplementationGoogle ↗
OBSERVED
NCCIH seasonal affective disorder vitamin D light therapy evidence vitamin D deficiencyGoogle ↗
OBSERVED

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

Classifying 2 queries…

Searches and sources

ChatGPT2 real searches · gpt-6
vitamin D3 versus D2 randomized trials systematic review serum 25-hydroxyvitamin D seasonal affective disorder evidence vitamin D supplementation Google ↗
NCCIH seasonal affective disorder vitamin D light therapy evidence vitamin D deficiency Google ↗
  1. Seasonal Affective Disorder · nimh.nih.gov
  2. Vitamin D · ods.od.nih.gov
  3. Seasonal Affective Disorder · nccih.nih.gov

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
vitamin D3 versus D2 randomized trials systematic review serum 25-hydroxyvitamin D seasonal affective disorder evidence vitamin D supplementation
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
NCCIH seasonal affective disorder vitamin D light therapy evidence vitamin D deficiency
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1