The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
Side effects are typically signs of having too much thyroid hormone in the body.
- Shakiness
- Fast or irregular heartbeat
- Fever
- Sweating
- Easily feel hot
- Hair loss
- Larger appetite
- Diarrhea
- Weight loss
- Weak muscles
- Fatigue
- Nervousness or anxiety
- Irritability
- Trouble sleeping
- Trouble breathing
Liothyronine serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Heart problems (e.g., heart attack): chest pain; shortness of breath; feeling weak; breaking into a cold sweat; pain that spreads to the jaw, neck, back, shoulders, arms
Source: DailyMed
The following Liothyronine side effects have also been reported
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Incidence not known
arm, back, or jaw pain
blurred or double vision
chest pain or discomfort
chest tightness or heaviness
crying
decreased bone mineral density
decreased urine output
delusions of persecution, mistrust, suspiciousness, or combativeness
difficulty breathing
dilated neck vein
dizziness
excessive
sweating
extreme tiredness or weakness
fainting
false or unusual sense of well-being
fast, pounding, or irregular heartbeat or pulse
feeling of discomfort
feeling of unreality
headache
heat intolerance
impaired fertility
increased appetite
increased blood pressure
irregular breathing
irritability
itching, skin rash
joint swelling
limp pain in the hip or knee
menstrual changes
mental depression
muscle aches, weakness, or cramps
nervousness
pain or discomfort in the arms, jaw, back, or neck
quick to react or overreact emotionally
rapidly changing moods
restlessness
sense of detachment from self or body
severe headache
slow heartbeat
stomach cramps
swelling of the face, fingers, feet, or lower legs
swollen lymph glands
trouble sitting still
trouble sleeping
vomiting
weight gain or loss
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Cold, clammy skin
confusion about identity, place, and time
difficulty in speaking
dizziness
double vision
fast, weak pulse
headache
inability to move the arms, legs, or facial muscles
inability to speak
lightheadedness
loss of consciousness
nervousness
seizure
sensitivity to heat
slow speech
sweating
trouble sleeping
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Incidence not known
Feeling of warmth
redness of the face, neck, arms, and occasionally, upper chest
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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