29/10/2025
Did you know that Vitamin C can help to improve the absorption of your thyroid medication? 🍊
Low stomach acid is common in hypothyroidism, and it can interfere with how well your thyroid medication is absorbed. This is due to the fact that the parietal cells of the stomach require T3 hormone in optimal range to be able to produce adequate stomach acid to keep the pH of the stomach nice and low (acidic). We know that a more acidic pH is favourable for thyroid medication absorption. Low thyroid hormone states = low stomach acid and this raises the pH to a more alkaline state that can affect this absorption.
This may affect an individuals response to thyroid medication.
Research shows Vitamin C can help by:
〜 Improving gastric acidity
〜 Enhancing absorption of thyroid medication
〜 Supporting more stable thyroid hormone levels
A recent study looked at patients taking levothyroxine with 500 mg Vitamin C daily and found:
〜TSH decreased in all patients
〜T4 was higher in the group that took Vitamin C
〜T3 increased as well
If you’ve been taking your medication consistently but still struggling with fatigue, brain fog, or lingering hypothyroid symptoms, it might be time to dig deeper.
Book a naturopathic consult today to uncover what’s really going on and get personalised strategies to support your thyroid and energy.
👉 Link in bio to book.
PMID: 24601693