Levothyroxine Dosage Guide — Strengths, Titration & Max Dose
Complete dosing reference for Levothyroxine (Levothyroxine Sodium): available forms and strengths, typical adult dose, titration schedule, max dose, and dosing in special populations.
Verified pharmacies compete for your prescription. Free · No account · Bids in 1–4 hrs.
Chain retail
$30/mo
GoodRx typical
~$18/mo
Via Script Unlock
$11/mo
Save up to 65% — ~$228/year for chronic use.
Available Forms & Strengths
Forms
- Oral tablet
- Oral capsule
- Oral solution
- IV injection
Strengths
Typical Adult Dose
1.6 mcg/kg/day for full replacement; start lower in older adults
Max dose: Titrate to TSH target
Special Populations
- Pediatric
- Weight-based dosing, higher mcg/kg than adults
- Elderly
- Start 12.5–25 mcg/day, adjust every 6–8 weeks
Levothyroxine pricing varies dramatically by pharmacy
The same Levothyroxine prescription can cost $11 at one pharmacy and $30 at another in the same zip code. Chain pharmacies typically charge the most. Script Unlock lets verified independent and mail-order pharmacies compete for your prescription — the winning bid is usually 65% below chain retail.
- Free — no membership, no account, no credit card upfront
- Bids in 1–4 hours from verified US pharmacies
- Locked-in price — no PBM renegotiation at checkout
- Delivery or local pickup
Related Levothyroxine pages
Medical disclaimer: Dosage information on this page is for reference only and is not a substitute for medical advice. Your prescribing doctor determines the appropriate Levothyroxine dose for your condition, kidney and liver function, other medications, and clinical response.