Yes, Modalert can interact with thyroid medications, but the effect depends on the specific medication and the individual. Here’s what you should know:

Levothyroxine (Synthroid, Eltroxin, etc.) – Modalert may increase metabolism, potentially affecting how your body absorbs or processes levothyroxine. Some users report needing an adjustment in their thyroid dose when taking both.

Liothyronine (Cytomel, T3) – Since both T3 and Modalert 200 Australia can boost energy and metabolism, combining them may increase the risk of heart palpitations, anxiety, or overstimulation in some individuals.

Hyperthyroidism or Hypothyroidism – If you have thyroid imbalances, Modalert might exacerbate symptoms, so careful monitoring is needed.

If you’re taking thyroid medication, it’s best to consult your doctor before using Modalert to ensure your dosage remains stable and safe.