Alethro
AlethroDrug indexLevothyroxine
Thyroid

Levothyroxine costs $0–$15/month.

Levothyroxine (generic Synthroid) costs $4–$15/month for most insured patients in 2026, with no prior authorization required and cash prices starting at $4/month at Walmart and Costplus — the most commonly prescribed thyroid medication in the United States.

Estimates only. Verify with your pharmacy and insurer before filling. Not medical, financial, or insurance advice.

Cost calculatorEstimates only · verify before filling
Step 1 of 3Drug

What are you filling?

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$16
Manufacturer list
No mfr program
$0–$15
Typical with insurance
Tier 1
Most formularies
Where to fill

Levothyroxine prices by source

Manufacturer list (cash, no insurance)
Published list price · 30-day supply
$16
Costplus Drug Company
Mark Cuban's Cost Plus Drugs · cash price
$7
Walmart $4 generic list
Walmart pharmacy · 30-day supply
$4
GoodRx
Coupon-based pricing varies by pharmacy and ZIP
~$7

Sources: manufacturer published pricing · Costplus Drug Co. catalog · Walmart $4 list · GoodRx public pricing.

Commercial insurance

Your cost by plan

Tier from each carrier’s 2026 formulary — source documents linked on each plan card below. Use the calculator above for a personalized estimate based on your deductible state.

Blue Cross Blue Shield Employer PPO
Illinois Blue Choice PPO
Tier 1No PA
$0–$15/mo
See formulary
Blue Cross Blue Shield Employer HMO
Texas Blue Advantage HMO
Tier 1No PA
$0–$15/mo
See formulary
Aetna HDHP / HSA
Choice POS II HSA
Tier 1No PA
$0–$15/mo
See formulary
UnitedHealthcare Employer PPO
Choice Plus PPO
Tier 1No PA
$0–$15/mo
See formulary
Kaiser Permanente Employer HMO
Signature HMO
Tier 1No PA
$0–$15/mo
See formulary
Cigna Employer PPO
Open Access Plus
Tier 1No PA
$0–$15/mo
See formulary
Anthem Marketplace Silver
Silver 4500/40 Marketplace
Tier 1No PA
$0–$15/mo
See formulary
Blue Shield of California Employer HMO
Access+ HMO
Tier 1No PA
$0–$15/mo
See formulary
Anthem BCBS New York Employer HMO
Pathway HMO
Tier 1No PA
$0–$15/mo
Carrier page
Florida Blue Marketplace HMO
myBlue HMO
Tier 1No PA
$0–$15/mo
Carrier page
BCBS Michigan Employer PPO
Community Blue PPO
Tier 1No PA
$0–$15/mo
See formulary
Independence Blue Cross Employer PPO
Personal Choice PPO
Tier 1No PA
$0–$15/mo
See formulary
Humana Employer PPO
ChoiceCare PPO (Commercial)
Tier 1No PA
$0–$15/mo
Carrier page
Ambetter (Centene) Marketplace Silver
Balanced Silver
Tier 1No PA
$0–$15/mo
See formulary
Oscar Health Marketplace Bronze
Bronze Classic
Tier 1No PA
$0–$15/mo
Carrier page
Kaiser Permanente Employer HMO
Mid-Atlantic HMO (MD/VA/DC)
Tier 1No PA
$0–$15/mo
Carrier page
CareFirst BCBS Employer HMO
BlueChoice HMO (DC/MD/VA)
Tier 1No PA
$0–$15/mo
See formulary
FAQ

Levothyroxine cost questions

How much does levothyroxine cost with insurance?
Most commercially insured patients pay $0–$15/month for levothyroxine. As a Tier 1 generic on virtually all plans, copays are minimal. Some plans waive the copay entirely for thyroid replacement therapy.
Is levothyroxine the same as Synthroid?
Levothyroxine is the generic name; Synthroid is the most well-known brand name. They contain the same active ingredient at the same strengths. Some patients and prescribers prefer staying on a single brand (or generic) due to subtle bioavailability differences between manufacturers.
What is the cheapest pharmacy for levothyroxine?
Walmart's $4 generic list covers levothyroxine at $4 for a 30-day supply. Costplus Drug Company sells it at similar low prices. GoodRx coupons can match these prices at most major chains. Brand Synthroid costs significantly more ($60–$120/month) than generic.
Does insurance prefer generic or brand thyroid medication?
Most plans prefer generic levothyroxine at Tier 1 (lowest copay). Some patients require brand Synthroid for clinical reasons (sensitivity to filler ingredients in generics); in those cases, a prior authorization with documentation may be needed to get brand coverage at a lower tier.
Does Medicare cover levothyroxine?
Yes — levothyroxine is on every Medicare Part D plan's formulary at Tier 1 with minimal copays. Brand Synthroid may require prior authorization under most Medicare plans.
What dose of levothyroxine is most common?
Levothyroxine is dosed in micrograms (mcg) once daily on an empty stomach. Most common strengths range from 25mcg to 200mcg, with 50mcg, 75mcg, and 100mcg being typical adult starting doses. Cost is the same regardless of strength for most plans.
Can I get levothyroxine without insurance?
Yes — at $4/month from Walmart's generic list or similar cash prices at Costplus and most major chains, levothyroxine is affordable without insurance. It's one of the cheapest prescription medications in the US.
What if my insurance won't cover brand Synthroid?
Options: (1) try generic levothyroxine first (most patients tolerate it equivalently), (2) appeal with documentation of intolerance to generic fillers if applicable, (3) try a different branded option like Tirosint or Levoxyl, or (4) use AbbVie's Synthroid savings program for commercially insured patients.
Data sources

Source URLs for Levothyroxine have not yet been manually verified. Estimates above are modeled from public pricing patterns and manufacturer-published list prices.

  • • Manufacturer published pricing pages
  • • NADAC National Average Drug Acquisition Cost
  • • Carrier-published formulary tiers (where known)
  • • Cost Plus Drugs / mail-order public pricing
  • • FDA Orange Book (generic availability)