Comparing Levothyroxine vs NP Thyroid
| Levothyroxine | NP Thyroid |
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| Levothyroxine | NP Thyroid (thyroid desiccated) |
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Prescription only
Levothyroxine replaces missing thyroxine and is the preferred medicine to treat hypothyroidism. The dosage of levothyroxine needs to be tailored for each individual and there is a fine line between... View more |
Prescription only
Prescribed for Hashimoto's disease, Underactive Thyroid, TSH Suppression, Hypothyroidism - After Thyroid Removal, Thyroid Cancer. NP Thyroid may also be used for purposes not listed in this medication guide. View more |
Related suggestions Hashimoto's disease (Chronic Lymphocytic Thyroiditis)
Hypothyroidism, After Thyroid Removal (Hypothyroidism, Post-Thyroidectomy)
TSH Suppression
Popular comparisons
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| More about Levothyroxine | More about NP Thyroid (thyroid desiccated) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Levothyroxine has an average rating of 5.1 out of 10 from a total of 871 ratings on Drugs.com. 41% of reviewers reported a positive effect, while 47% reported a negative effect. |
NP Thyroid has an average rating of 3.4 out of 10 from a total of 244 ratings on Drugs.com. 23% of reviewers reported a positive effect, while 70% reported a negative effect. |
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| Drug Class | |||||||||||||||||
| Side Effects | |||||||||||||||||
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See also: levothyroxine side effects in more detail. |
See also: NP Thyroid side effects in more detail. |
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| Generic Availability | |||||||||||||||||
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Lower cost generic |
N/A |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all levothyroxine prices |
View all NP Thyroid prices |
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| Dosage Forms Available | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Eltroxin, Ermeza, Euthyrox, Eutroxsig, Evotrox, Levo-T, Levolet, Levoxyl, Novothyrox, Synthroid, Thyquidity, Tirosint, Tirosint-Sol, Unithroid View more | Other thyroid desiccated brands include: APur Thyroid, Armour Thyroid, Bio-Throid, Nature-Throid, Niva Thyroid, Thyroid Porcine, Westhroid, WP Thyroid | ||||||||||||||||
| Half Life The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. | |||||||||||||||||
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240 hours |
168 hours |
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| CSA Schedule ** View glossary of terms | |||||||||||||||||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||||||||||
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Category A
Studies show no risk
See the full pregnancy warnings document. |
Category A
Studies show no risk
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||||||||||
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A total of 225 drugs are known to interact with levothyroxine:
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A total of 218 drugs are known to interact with NP Thyroid:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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August 21, 2000 |
N/A |
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| WADA Class View World Anti-Doping Agency classifications. | |||||||||||||||||
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N/A |
N/A |
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| More Information | |||||||||||||||||
| Patient resources | |||||||||||||||||
| Professional Resources | |||||||||||||||||
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N/A |
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| Related Treatment Guide | |||||||||||||||||
** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.