Would a thyroid condition cause sleepless nights? Taking Synthroid (thyroxine) meds

Too much Synthroid (thyroxine) Yes, restlessness and insomnia can occur if blood levels of TSH is low and freeT4 levels(thyroxine) are high because taking a higher dose of Synthroid. Should get a blood TSH level and free T4 levels and adjust Synthroid dosage .Sleeplessness may improve when TSH and thyroxine levels in blood is therapeutic .