Most acute thyroxine overdoses are mild.
Chronic ingestions are more likely to present with clinical symptoms similar to thyrotoxicosis
Diet pills such as Singaporean Slim 10 and athletic stimulant compounds can contain large amounts of T3/T4
Thyrotoxicosis factitia - also known as thyroxine addict or metabolic malingerer where large doses of thyroid supplementation is taaking for weight loss or stimulation
Levothyroxine toxicity
Sympathomimetic ingestion
Congenital adrenal hyperplasia
Atherosclerosis
Gamma hydroxybutyrate withdrawal
Aortic regurgitation
Hypothyroidism
Thyrotoxicosis