Levothyroxine + Liothyronine (Combination Therapy)

Treatment for Hypothyroidism

Typical Dosage: Levothyroxine 50-150mcg daily + Liothyronine 5-20mcg daily

Effectiveness
80%
Safety Score
60%
Clinical Trials
8
Participants
25K

Comparative Safety Scale(Higher is safer)

Cyanide☠️
Meth💀
Cigarettes🚬
Chemo☢️
Alcohol🍺
Morphine💊
Antibiotics💉
Tylenol💊
Exercise🏃
Water💧
60
DangerousModerateSafe
Treatment Details
Dosage Range
Levothyroxine 50-150mcg daily + Liothyronine 5-20mcg daily
Time to Effect
1-2 weeks
Treatment Duration
lifetime
Evidence Quality
MODERATE
Confidence Score
65%confidence in effectiveness data
Health Economics
Annual Cost of Care
Drug Cost:$180
Monitoring:$350
Side Effect Mgmt:$50
Total Annual:$580
Cost-Effectiveness Analysis
Cost-Effectiveness Rating
MODERATE
QALYs Gained
0.7
Outcome-Based Costs
Cost per Responder
$773
Cost per Remission
$773
Comparison vs Levothyroxine monotherapy
Cost Difference
+$240/year
More expensive
QALY Difference
+0.05 QALYs
Better outcomes
Dominance
No dominance
Levothyroxine + Liothyronine (Combination Therapy) Outcomes

for Hypothyroidism

Efficacy Outcomes
Overall Effectiveness
+80%
Response Rate
+75%
Remission Rate
+75%
Common Side Effects
Palpitations/Tachycardia
+12%
Anxiety/Insomnia
+10%
Tremor
+7%

Sources:

researchgate.net
nih.gov
nih.gov

WARNING: LIMITED TRIALS AVAILABLE

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Active Clinical Trials
2 active trials recruiting for Levothyroxine + Liothyronine (Combination Therapy) in Hypothyroidism

Novel Approaches to the Treatment of Hypothyroidism

NCT06731764RECRUITINGPHASE2, PHASE3
View Study
90 participants
INTERVENTIONAL
Farmington, United States
Started: Dec 10, 2024

LT4/LT3 Combination Therapy Versus LT4 Monotherapy in Patients with Autoimmune Hypothyroidism.

NCT05682482RECRUITINGPHASE3
View Study
600 participants
INTERVENTIONAL
Almere Stad, Netherlands +18 more
Started: Oct 7, 2022
Completed Clinical Trials
5 completed trials for Levothyroxine + Liothyronine (Combination Therapy) in Hypothyroidism

Combined Replacement Therapy With Levothyroxine and Liothyronine in Thyroidectomized Patients

NCT03053115COMPLETEDPHASE2, PHASE3
View Study
160 participants
INTERVENTIONAL
Modena, Italy
Started: Mar 14, 2017

Combined Therapy With L-Thyroxine and L-Triiodothyronine Compared to L-Thyroxine Alone

NCT00715572COMPLETEDNA
View Study
36 participants
INTERVENTIONAL
Started: Mar 1, 2002

Energy Metabolism in Thyroidectomized Patients

NCT04782856COMPLETEDPHASE2
View Study
13 participants
INTERVENTIONAL
Richmond, United States
Started: Oct 28, 2020

Variations in the DIO2 and MCT10 Genes and Effect of Triiodothyronine Treatment

NCT03926585COMPLETED
View Study
82 participants
OBSERVATIONAL
Herlev, Denmark
Started: Apr 23, 2019

Effect of T4-T3 Combination Therapy Versus T4 Monotherapy in Patients With Hypothyroidism

NCT00531713COMPLETEDPHASE4
View Study
59 participants
INTERVENTIONAL
Herlev, Denmark
Started: Apr 1, 2003