Trimi vs Willow

Both sell tirzepatide. Trimi costs $125 a month and Willow costs $399, a difference of $274 a month or about $3,288 a year. The desk reads it as follows.

Trimi is lowest flat price with named pharmacies. Willow is straightforward single-price plans. They are not aimed at the same person, and the cheaper one is not automatically the right answer — though on this board it usually is.

Advert against bill. Trimi advertises $125 and bills $125; Willow advertises $399 and bills $399. Both gaps are the same size, so the advertised comparison happens to hold.

Side by side

Prices verified 2026-09-18. "True monthly cost" is what you are billed in month two, once any introductory rate has lapsed and any membership has renewed.

The split

3 differences on the record. The others match.

What each puts on the record: Trimi

• One flat charge covers medication, clinician visits, check-ins and free overnight shipping; no separate membership.
• Names its compounding pharmacies publicly: VialsRx (Texas Board of Pharmacy #35264) and GreenwichRx, with a certificate of analysis available on request.

Where it wins: The cheapest verified flat rate for compounded tirzepatide in this comparison. Watch for: Both headline prices are annual-plan rates. Confirm the month-to-month figure and the refund terms before prepaying twelve months.

What each puts on the record: Willow

Where it wins: A single price with no membership arithmetic. Watch for: There is little published detail on how dose changes are handled. Ask before committing.

In each one’s favour

Trimi.

• The cheapest verified flat rate for compounded tirzepatide in this comparison.
• Names its pharmacies with a licence number and offers a certificate of analysis — almost nobody else in this market does.

Willow.

• A single price with no membership arithmetic.

Trimi scores higher overall at 4.6 out of 5. The weights are published on how we rate, and so is the note about which of these is our paid featured partner.

The desk’s call

The board says Trimi. What the board cannot say is whether the advertised figures you were shown elsewhere match these — check the gap row, because a listing that advertises low and bills high will beat an honest one in any comparison built on advertised prices.

The verdict

On the board, Trimi at $125 a month is the more defensible choice on arithmetic alone. Willow earns its premium only if you will actually use what it does differently. Read the full reviews before deciding: Trimi and Willow.

How they sit against everyone else