Older people may be at greater risk of cardiac side effects when starting levothyroxine
Shakiness
Levothyroxine sodium is also used to treat other types of thyroid hormone and thyroid disorders and conditions (such as certain types of goiters
Fast heartbeat fever hives, itching, skin rash hoarseness
The common side effects of levothyroxine usually happen because the dose you're taking is more than you need
Levothyroxine, also known as L-thyroxine, is a synthetic form of the thyroid hormone thyroxine (T 4)
Fertility problems may lead to not being able to get pregnant or father a child
4
Some dosage forms listed on this page may not apply to the brand name Levothyrox
High thyroid hormone levels may lead to decreased bone development Levothyroxine is used to treat an underactive thyroid (hypothyroidism)
Newborns
Levothyroxine does not usually have any side effects, because the tablets simply replace a missing hormone
Some rare but serious side effects can occur as a result of levothyroxine toxicity (overdose): Atrial fibrillation (a dangerous heartbeat irregularity) Fast LEVOTHYROXINE (lee voe thye ROX een) treats low thyroid levels (hypothyroidism) in your body
Jittery sensation
Side-effects, further information Initial dosage in patients with cardiovascular disorders If metabolism increases too rapidly (causing diarrhoea, nervousness, rapid pulse, insomnia, tremors and sometimes anginal pain where there is latent myocardial ischaemia), reduce dose or withhold for 1–2 days and start again at a lower dose
Pounding of the heart, sometimes called heart palpitations
May need to adjust the dose of levothyroxine in patients with these conditions
Another important side effect is that of heat intolerance
If Levothyroxine is used to treat an underactive thyroid ( hypothyroidism )