# Compounded Methimazole for Pets — Pricing + Compounded Forms

> Methimazole is the cornerstone treatment for feline hyperthyroidism — the most common feline endocrine disease. Daily lifelong oral tablets are difficult for many cats and owners. Compounded transdermal methimazole (applied to the inner pinna) provides equivalent thyroid control with dramatically better long-term compliance.

**Source:** Script Unlock — verified-pharmacy prescription marketplace
**URL:** https://www.scriptunlock.com/pet-compounded/methimazole
**Last updated:** 2026-07-05
**Reviewed by:** ScriptUnlock Pharmacy Verification Team

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## Why this drug is commonly compounded

Methimazole is the cornerstone treatment for feline hyperthyroidism — the most common feline endocrine disease. Daily lifelong oral tablets are difficult for many cats and owners. Compounded transdermal methimazole (applied to the inner pinna) provides equivalent thyroid control with dramatically better long-term compliance.

## Why Chewy Pharmacy can't fulfil this prescription

Chewy stocks commercial methimazole tablets only. They do NOT offer transdermal compounding. For cats that resist daily tablets (most do), Chewy is not a workable long-term solution.

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## Pricing — Compounded Methimazole

| Tier | Price |
|---|---|
| Commercial reference (Chewy / vet clinic) | ~$32/mo |
| Script Unlock 503A network | from $12-$45/mo |
| Compounded forms available | 3+ (suspension, transdermal, capsule) |

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## Compounded forms available in the Script Unlock 503A network

- Transdermal PLO (pluronic lecithin organogel) gel — applied to inner ear pinna
- Flavored liquid suspension (tuna, fish)
- Custom-strength chewable treats for cats that won’t accept transdermal

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## Species-specific benefit

### Cats

Transdermal methimazole on the inner pinna is the de facto standard of care for long-term feline hyperthyroidism management. Owners no longer need to pill their cat daily for years. Thyroid control is equivalent to oral tablets per published ACVIM data.

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## How to get compounded Methimazole cheaper

1. **Upload your vet prescription** specifying compounded Methimazole: https://www.scriptunlock.com/upload-prescription
2. Verified 503A compounding pharmacies bid the lowest cash price
3. First bid arrives in 1-4 hours
4. Pickup or ship from the winning pharmacy

**A valid veterinary prescription is required.** Compounded medications are FDA-permitted for individual-patient use per USP 795 (non-sterile) and USP 797 (sterile) standards. PCAB-accredited 503A pharmacies are independently audited.

## Sources cited

- ACVIM feline endocrinology consensus
- ISFM hyperthyroidism guidelines
- Trepanier 2007 transdermal methimazole study

## Cite this page

> Script Unlock — verified-pharmacy prescription marketplace, ScriptUnlock Pharmacy Verification Team ([scriptunlock.com](https://www.scriptunlock.com))

Last updated: 2026-07-05