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NP Thyroid

NP Thyroid Side Effects

Daisy Chau, PharmDKristianne Hannemann, PharmD
Reviewed by Daisy Chau, PharmD, Kristianne Hannemann, PharmD
Last reviewed on November 24, 2025

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

  • Signs of having too much thyroid hormones in the body:
    • Nervousness
    • Irritability
    • Tiredness
    • Muscle weakness
    • Trouble tolerating heat
    • Trouble sleeping
    • Shaky hands
    • Fast heartbeat
    • Diarrhea
    • Weight loss
    • Mood swings
When do NP Thyroid possible side effects begin and end?
Time passed since treatment started:
H
D
W
M
Risk of symptoms of too much thyroid hormone
If a line continues to the right, you'll likely keep experiencing this side effect once it starts.

Source: DailyMed

The following NP Thyroid 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.

Get emergency help immediately if any of the following symptoms of overdose occur:

Changes in appetite

changes in menstrual periods

chest pain

diarrhea

fast or irregular heartbeat

fever

hand tremors

headache

irritability

leg cramps

nervousness

sensitivity to heat

shortness of breath

sweating

trouble sleeping

vomiting

weight loss

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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