Feel like yourself again

Liver support for the step where up to 80% of your T4 becomes active T3. Your levothyroxine stays exactly as it is.

Rated 4.8 · 3,270+ reviews

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Works with levothyroxine
No iodine
Third-party tested
90-day money-back guarantee

Works with levothyroxine
No iodine or hormones
Third-party tested
Every dose on the label
Two capsules a day
90-day money-back guarantee

What changes when conversion runs again

Support for healthy energy, metabolism and mental clarity, from the step your pill can't reach.

Steady energy
Clearer thinking
Metabolism support
Warmer hands

The formula, in order

Three steps, in the order your liver needs them

You have to clear the road before you can drive on it. Most thyroid supplements start at the last step, which is why selenium on its own so often does nothing.

Step 1WakeMilk thistle, dandelion, artichoke
Milk thistle 250 mg, dandelion 100 mg, artichoke 100 mg, all cold-processed. These wake the liver and get bile moving again, so the pathway your T4 travels through is clear.
Step 2RepairCholine, glutathione
Choline 50 mg, glutathione 25 mg. Choline clears the fat quietly congesting the liver. Glutathione repairs what years of inflammation wore down.
Step 3ConvertSelenium
Selenium 50 mcg, as L-selenomethionine, 91% DV. The mineral your conversion enzymes are built from. It finishes the job and turns T4 into active T3. We use the organic form your body absorbs well.

All three steps happen inside the same two capsules with your first meal, so your routine never changes.

Rated 4.8 · 3,270+ reviews

Women who feel like themselves again

Your daily routine

Keep your levothyroxine. Add two capsules.

Your levothyroxine stays exactly as it is. Conversion Complex finishes the job it starts, in your liver.

Step 1

Your thyroid pill, as prescribed

Take your levothyroxine first thing, on an empty stomach, exactly as your doctor told you. Same pill, same dose.

Phasea Conversion Complex on a kitchen counter beside breakfast

Step 2

Two capsules with your first meal

Two capsules with breakfast, kept an hour clear of your thyroid pill, the same way your coffee already is. That's the whole routine, and one bottle lasts a month.

Step 3

Then watch for the small things

Most women notice something in the first week: easier sleep, a lighter afternoon, warmer hands. The rest builds over 90 days.

Works alongside levothyroxine, Synthroid, Armour, Tirosint, NP Thyroid and Unithroid. There is no iodine in it and no hormone. On a blood pressure pill or a statin too? Show your pharmacist the label.

What women tell us

93.2% reported more energy in the first 4 weeks*

87.3% decided to reorder*

12,000+ women have tried Phasea

*Based on internal customer survey data. Individual results vary. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The formula

Phasea Conversion Complex

Rated 4.8 · 3,270+ reviews

Six ingredients in the order your liver needs them: wake the pathway, repair it, then convert T4 into active T3.

Have energy left when the day endsSteadier energy through the day
Find the word when you need itClearer thinking, fewer lost words
Watch the scale finally moveWeight starts answering your effort

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90-day money-back guarantee · Free shipping over $85

Made carefully

Every dose on the label

Six ingredients at the doses we list, third-party tested, with no proprietary blend. Easy to show your doctor.

No proprietary blend
Third-party tested
No iodine or kelp
No hormone
No biotin, which can throw off thyroid tests
Cold-processed botanicals

Questions women ask us

Can I take it with my thyroid medication?

Yes, that's what it's for. Your pill delivers the hormone, and Conversion Complex helps your body use it. It works alongside levothyroxine, Synthroid, Armour, Tirosint, NP Thyroid and Unithroid, and it doesn't replace any of them.
Take your thyroid pill on an empty stomach as usual, then two capsules with your first meal, at least an hour later.
Morning or night?

With your first meal. That keeps the capsules an hour clear of your thyroid pill, the same way your coffee already is, and breakfast is the easiest routine to keep every day.
How does fixing my liver help my heart?

Because your liver has two quiet jobs, and they fail together.
The first is activating your thyroid hormone. The second is pulling cholesterol out of your blood before it builds up in your arteries.
Years of thyroid inflammation slow that liver down, so both jobs stall at the same time. That's why your energy crashed and your cholesterol climbed: one overlooked organ, two problems, and nobody connected them for you.
Support the liver, and it goes back to doing both.
Do I need to change what I eat?

No. Eat the way you normally do and take the capsules with your first meal. If your doctor has you off gluten for celiac disease, keep to that.
Is it safe with Hashimoto's?

Yes. It was built for women with Hashimoto's and other thyroid conditions.
There's no iodine in it, which matters because iodine can flare Hashimoto's and many thyroid supplements load up on it. Every ingredient in Conversion Complex was chosen for the conversion step in your liver.
I had my thyroid removed. Does this apply?

Yes. Your levothyroxine still has to be converted into T3, and up to 80% of that happens in your liver, so the step Conversion Complex supports is the same.
What if it doesn't work for me?

Then you don't pay. Every order has a 90-day money-back guarantee.
Email us, send back whatever's left (empty bottles are fine) and we refund you in full. We'd rather earn your next order than keep this one.
How long until I feel results?

Most women notice something in the first week, usually sleep, and less of that wired-but-exhausted feeling by mid-afternoon. Brain fog and energy tend to shift around weeks 3 to 4.
Metabolism, weight, hair and skin come later, usually weeks 6 to 8, with the full benefit by 90 days. Every woman is different, and the guarantee covers the whole 90 days.