In patients with hypothyroidism and gastrointestinal pathology, vitamin C improves the abnormalities in serum free T4, T3, and TSH

[Carys21]

pubmed.ncbi.nlm.nih.gov/246...

[jimh111]

The acidity of vitamin C improves absorption of levothyroxine in those with poor absorption. Fruit juice has a similar effect.

[SlowDragon Administrator]

Low stomach acid is extremely common hypothyroid symptom

Vitamin C increases acidity

[WobblyX in reply to SlowDragon]

What time of day is best to take vitamin c supplement? SlowDragon

[jimh111 in reply to WobblyX]

If you want to use it to improve levothyroxine absorption take it at the same time as your levo tablet. Otherwise, I don't think it matters.

[SlowDragon Administrator in reply to WobblyX]

Shortly before Levothyroxine?