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Levothyroxine

لووتیروکسین

⚠ Unverified

🧪 Endocrine & metabolismThyroid hormone

Market / country: 🇺🇸 USA

Synthroid (US)

🧮 Dose calculator

Disease / regimen

Hypothyroidism · Regimen source: FDA Levothyroxine · 2.3, Table 2

• Starting daily dose; titrate every 2 weeks by TSH or free T4. Empty stomach, 30–60 min before breakfast. FDA Levothyroxine · 2.3 FDA Levothyroxine · 2.1

Formulation

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Weight (kg) *

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🛡️ Safety & information

Contraindications

⛔ Uncorrected adrenal insufficiency. FDA Levothyroxine · 4

Warnings

• Boxed warning: not for obesity or weight loss. FDA Levothyroxine · WARNING: NOT FOR TREATMENT OF OBESITY OR FOR WEIGHT LOSS

Formulations

25 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
50 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
75 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
88 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
100 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
112 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
125 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
137 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
150 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
175 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3
200 mcg tablet — tablet 🇺🇸 USA FDA Levothyroxine · 3

📚 Reference status for this drug

Shows which sources have references recorded for this drug and which do not.

FDA label (DailyMed)✅ Present
FDA Levothyroxine · 3 FDA Levothyroxine · 2.3, Table 2 FDA Levothyroxine · 2.3 FDA Levothyroxine · 2.1 FDA Levothyroxine · 2.3, Table 1 FDA Levothyroxine · 4 FDA Levothyroxine · WARNING: NOT FOR TREATMENT OF OBESITY OR FOR WEIGHT LOSS
UK SmPC (eMC / MHRA)❌ Not present
Published guideline❌ Not present
Licensed reference (medical school)❌ Not present
Iranian leaflet (IFDA)❌ Not present
Clinical review⚠ Unverified