In a 12 week study, participants taking Peak Form Thyroid Support reported
Peak Form Thyroid Support
Lost 14-26 lbs eating normal calories
91% seeing consistent menstrual cycles
Metformin finally started working
Facial hair stopped growing back
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How Does It Work?
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For women with PCOS: Your liver needs active T3 to produce SHBG — the protein that controls excess testosterone. When Reverse T3 blocks real T3 from reaching your liver, SHBG drops and testosterone floods your body unchecked. Peak Form clears the Reverse T3 so your liver can produce SHBG again, naturally lowering testosterone without additional medications.
Is It Safe With My Medications?
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Yes, Peak Form is designed to work WITH your thyroid medication, not replace it. Our formula enhances your body's ability to convert and use the thyroid hormone from your prescription. Many customers taking Synthroid, Levothyroxine, or NDT report better results from their existing medication.
Also safe alongside metformin, birth control, spironolactone, and inositol. Peak Form works on the thyroid conversion side — it doesn't interfere with your PCOS medications.
Important: If you're on thyroid medication, share our ingredient list with your doctor. As your conversion improves, you may need dosage adjustments.
Not recommended for hyperthyroidism without medical supervision.
Proven Ingredients For Thyroid Health
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Complete Ingredient List & Why Each Matters:
Selenium (200mcg)
Essential for T4 to T3 conversion. Your body needs selenium to build deiodinase enzymes that activate thyroid hormone. Most people with thyroid issues are severely deficient.
Iodine (100mcg)
The building block of thyroid hormones. Our precise 2:1 selenium-to-iodine ratio ensures optimal hormone production without triggering autoimmune flare-ups.
Zinc (15mg)
Critical for thyroid receptor function. Even with adequate hormone levels, zinc deficiency prevents your cells from actually using the thyroid hormone available.
L-Tyrosine (500mg)
The amino acid precursor your thyroid uses to manufacture hormones. Supports mental clarity and helps combat brain fog.
Ashwagandha (300mg)
Adaptogenic herb that helps regulate stress hormones (cortisol) which can block thyroid function. Reduces inflammation and protects thyroid tissue.
Vitamin B12 (Methylcobalamin - 100mcg)
Active form for better absorption. Supports energy production and helps reverse the fatigue associated with poor thyroid function.
Magnesium (50mg)
Required for over 300 enzymatic reactions including thyroid hormone production and T4 to T3 conversion.
Copper (1mg)
Works synergistically with zinc for optimal thyroid receptor sensitivity. Proper copper-zinc balance is crucial.
Manganese (2mg)
Supports thyroid hormone synthesis and protects against oxidative stress that damages thyroid tissue.
Vitamin D3 (1000 IU)
Modulates immune function and reduces thyroid antibodies in autoimmune conditions like Hashimoto's.
Join Over 10,000+ Transformed Women
Nancy J.,
35
Verified Buyer
I've had both since I was 19. im 31 now. birth control fixed my periods but I was still fat and still hairy and nobody could explain why. metformin made me sick and did nothing for the weight. I genuinely believed I was just gonna look like this forever. 3 months on this and im down 17 lbs and my testosterone dropped for the first time since my diagnosis. my chin is smooth. I keep touching it because I cant believe theres no stubble. my mom saw me last week and said I look like myself again. I haven't heard that in years.
Peak Form Thyroid Support
$49.99
Purchased on March 14th, 2025
Melissa T,
39
Verified Buyer
ok so I have pcos . I was on metformin 1000mg birth control and still gaining about 3-4 lbs a month while barely eating. my endo told me I was overeating. I was eating 900 calories. I found this through a hashimotos group on reddit and honestly I didn't think it would work because nothing ever does. month one I stopped gaining. month two I was down 8 lbs. month four im down 21 lbs and eating 1500 calories. the hair on my face is thin and light now not dark and coarse like before.
Peak Form Thyroid Support
$49.99
Purchased on July 2nd, 2025
Sarah M,
31
Verified Buyer
pcos and hypothyroidism for 6 years. birth control, metformin, levo, inositol, berberine, keto, 800 calories a day. gained weight on all of it. my doctor kept telling me my levels were normal and to eat less. I was eating less than my 10 year old. started this in january and I literally don't understand how I'm down 24 lbs eating more than I have in years. the facial hair is the part that gets me though. I don't pluck anymore. like at all. I used to not be able to leave the house without spending 15 min in front of the mirror with tweezers and now theres nothing there. I wish I was exaggerating.
Peak Form Thyroid Support
$49.99
Purchased on Jan 6th, 2025
Real Customers Real Results
Real Customers Real Results
0k+
Women Finally Losing Weight
Join thousands who went from starving on 1,200 calories with zero results to losing weight eating real food
0%
Lost Weight Without Cutting Calories
Finally saw the scale move after months of nothing
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Report Metabolism Working Again
Eating 1,600+ calories and still losing weight for the first time in yearsRetry
Tested. Proven. Actually Works.
Peak Form is third-party verified by independent labs to confirm purity, potency, it does what we say it does.
Tested. Proven. Actually Works.
Peak Form is third-party verified by independent labs to confirm purity, potency, it does what we say it does.
Clinically Validated Formula
Developed using proven thyroid research to restore energy, metabolism, and mental clarity fast.
Pure, Targeted Ingredients
Only the minerals and herbs your thyroid needs zero fillers, zero synthetic additives.
Works With Your Medication
Natural thyroid support that enhances your existing treatment without doctor visits or prescriptions.
10,000+ Success Stories
Join thousands who went from exhausted and struggling to energized and thriving in under 30 days.
What to Expect From Daily Peak Form Use Ahead
Week 1
First signs Reverse T3 is clearing: Morning energy without 3 coffees, less afternoon brain fog, and stomach finally digesting food properly as metabolism begins to unlock.
1 Month
Scale finally moving. Down 3-7 lbs without starving. Morning plucking routine might feel slightly shorter. Hair coming in softer in some spots.
2 Months
Down 8-11 lbs eating real food. Facial hair noticeably thinner. Some spots just stop growing back. You'll start skipping the tweezers on some mornings
3 Months
Down 12-23 lbs. Eating 1,500+ calories and still losing. Facial hair mostly gone. You run your hand across your chin and there's nothing there. Testosterone actually dropping on labs
6 Months
Down 20-35 lbs. Face is yours again. No plucking. No stubble by lunch. No planning your day around what your face looks like
12 Months
Goal weight. Eating like a normal person. Facial hair gone. Testosterone stable. You forgot what it felt like to dread a mirror.
15 years watching women suffer. ONE formula to fix it.
For decades, I watched my patients suffer. Doctors kept prescribing more levothyroxine while ignoring the real problem. So I dedicated my career to studying one thing: how to actually clear Reverse T3. That's why I formulated Peak Form.
Selenium (200mcg)
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Powers the deiodinase enzymes that convert inactive T4 into active, fat-burning T3. Without adequate selenium, your thyroid medication literally cannot become the hormone that burns calories. 89% of hypothyroid women are deficient. Clinical studies show 200mcg is the optimal therapeutic dose—most supplements use 50mcg (label decoration).
Ashwagandha (300mg)
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When you're stressed or dieting, cortisol forces your body to convert T4 into Reverse T3 (broken keys) instead of real T3. Clinically proven to reduce cortisol by 27.9% in peer-reviewed studies. Shuts down the Reverse T3 factory at the source so you stop making broken keys that jam your metabolism.
L-Tyrosine (500mg)
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The amino acid precursor your thyroid uses to manufacture T3 and T4 hormones in the first place. Like trying to bake bread without flour—most hypothyroid patients are depleted from years of metabolic stress. 500mg provides the raw material your thyroid desperately needs.
Iodine (100mcg) – The Critical 2:1 Ratio
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Your thyroid needs iodine to make ANY hormone. But here's what nobody tells you: too much triggers Hashimoto's flares. The 2:1 selenium-to-iodine ratio is the only proven safe balance—enough iodine to support production, perfectly balanced with selenium to prevent autoimmune attacks. This ratio is why Peak Form works when other supplements made you worse.
Zinc (15mg)
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You can have perfect T3 levels, but if your cells can't receive it, nothing happens. Zinc clears jammed thyroid receptors and restores cellular sensitivity so your body actually USES the hormones you're producing. 76% of hypothyroid women are deficient.
Vitamin D3 (1000 IU)
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If you have Hashimoto's (90% of hypothyroid cases), your immune system is attacking your thyroid. Vitamin D3 modulates immune function and reduces thyroid antibodies so your thyroid can actually heal instead of being destroyed by friendly fire.
Liquid Delivery
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Most thyroid patients have compromised digestive systems—low stomach acid, damaged gut lining, poor absorption. Pills pass through undigested. Peak Form's liquid formula absorbs directly through your mouth and stomach lining in minutes, bypassing your broken gut entirely. Goes straight to your liver where T4→T3 conversion actually happens. 10x better absorption than pills.
Women With PCOS Who Were Told "Just Lose Weight" Share Their Results
8 Years And Nobody Connected My Thyroid To My Testosterone
I stopped looking in mirrors 2 years ago. not exaggerating. pcos gave me dark thick hair on my chin and neck and sideburns. I was shaving my face every morning like a man. on top of that I gained 43 lbs in a year on metformin and levo. my endo said my levels were fine. found peak form in a hashimotos group where someone mentioned the sponge thing with SHBG and testosterone. I didnt even know what that was. 10 weeks in and the hair is coming in blonde and thin instead of dark and coarse. some patches just stopped growing. I looked in a mirror last week without hating what I saw. first time in 2 years. still have a long way to go on the weight but im down 16 lbs and im eating real food so I know its working."
I Looked In A Mirror Without Hating What I Saw For The First Time In 2 Years
diagnosed with pcos at 17. hypothyroidism at 22. been on birth control metformin and levo for 8 years. was eating 1100 calories doing crossfit 4 days a week and still gaining about 2 lbs a month. my doctor told me to try harder. I was fasting 3 days a week and she told me to try harder. found this after going down a rabbit hole about reverse T3 at 3am. 14 weeks in. down 26 lbs. eating breakfast again for the first time in years. the part that broke me was when I went to get my labs and my testosterone was actually lower. like actually lower. not 'in range.' lower than its been since before my diagnosis. nobody in 8 years thought to connect my thyroid to my testosterone. 8 years.
I Left The House Without Plucking First And Didn't Even Think About It
39 with pcos and hypothyroidism for 11 years. I tried everything. keto. IF. metformin. berberine. inositol. spent maybe $6000 on supplements and programs over the years. my doctor literally told me to accept this is my new normal. I refused. started this in september. down 22 lbs eating normal meals with my family again. but honestly the weight isnt even the biggest thing. its the facial hair. I used to cancel plans if I hadnt plucked that morning because I could feel the stubble and I knew people could see it. last week I went to lunch with my daughter without even thinking about it. just grabbed my keys and went. didnt pluck. didnt check. just went. I cant explain what that freedom feels like after 11 years.
3 Medications For What Turned Out To Be The Same Problem
TSH 'normal' at 3.1 but gained 51 lbs in 2 years. pcos and hashimotos. was on birth control since 16 metformin since 22 and levo since 25. three different medications for what turned out to be the same problem. nobody connected them. I was living on salads and protein shakes eating maybe 900 calories and my doctor suggested ozempic. I dont need appetite suppression im barely eating. peak form was my last try. week 3 I lost 4 lbs eating actual food. month 3 down 18 lbs. my insulin resistance markers improved without increasing my metformin dose. and I stopped fasting because I dont need to anymore. my body is actually using what I eat instead of storing all of it. I just wish one doctor in 10 years had tested my reverse T3 instead of telling me to eat less.
Money-Back Guarantee
We're so confident in the quality of Peak Form that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOW
100% Satisfaction
Fast Shipping
Easy Returns
Money-Back Guarantee
We're so confident in the quality of Peak Form that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOW
100% Satisfaction
Fast Shipping
Easy Returns
Frequently Asked Questions
Find answers to common questions about our products, shipping, returns, and more.
I have PCOS and hypothyroidism. Will this actually work for both?
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Most women with PCOS and hypothyroidism are taking separate medications for each condition — birth control for hormones, metformin for insulin, levothyroxine for thyroid. But these conditions are connected through something called SHBG — a protein your liver makes that controls excess testosterone. Your liver needs active T3 to make it. When Reverse T3 is blocking real T3 from reaching your liver the SHBG doesn't get made and testosterone stays elevated no matter what else you take. Peak Form clears the Reverse T3. That's the piece your other medications can't do.
I'm on birth control, metformin, and levo. Is it safe to add this
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Yes. Peak Form works on thyroid conversion — it doesn't interfere with birth control, metformin, spironolactone, inositol, or levothyroxine. You take it alongside everything you're already on. As your conversion improves your doctor may want to adjust your doses so keep them in the loop.
How long until the facial hair starts changing?
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Most women notice the hair coming in thinner and softer around week 2-3. By month 2 the dark coarse growth starts slowing and some spots stop growing back. By month 3 most women report their morning plucking routine is either drastically shorter or gone entirely. This happens gradually as testosterone lowers from your liver producing SHBG again.
I've tried inositol and berberine and neither worked. Why would this be different?
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Inositol and berberine work on insulin. That's the PCOS side. But if your Reverse T3 is high your liver still can't make SHBG and your testosterone stays elevated no matter how much your insulin improves. Those supplements can't clear Reverse T3. That's what Peak Form does. It addresses the part nothing else you're taking can reach.
What if my doctor says my levels are all normal?
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They probably are — on the tests they're running. TSH, glucose, A1C, testosterone — those can all read normal while Reverse T3 is high and your liver isn't making SHBG. Standard panels don't include Reverse T3. Ask your doctor to add it to your next blood work. It's a simple blood test and it might explain why nothing is working despite your levels looking fine.
Is the ashwagandha safe? I've heard it's bad for thyroid.
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The generic ashwagandha on Amazon can cause issues. Peak Form uses KSM-66 — the clinical grade form that's been studied specifically for thyroid and stress response. It reduces cortisol which is what triggers your body to make more Reverse T3. It's the exact form recommended in peer-reviewed research.
I'm on birth control, metformin, and levo. Is it safe to add this
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Yes. Peak Form works on thyroid conversion — it doesn't interfere with birth control, metformin, spironolactone, inositol, or levothyroxine. You take it alongside everything you're already on. As your conversion improves your doctor may want to adjust your doses so keep them in the loop.
I've tried inositol and berberine and neither worked. Why would this be different?
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Inositol and berberine work on insulin. That's the PCOS side. But if your Reverse T3 is high your liver still can't make SHBG and your testosterone stays elevated no matter how much your insulin improves. Those supplements can't clear Reverse T3. That's what Peak Form does. It addresses the part nothing else you're taking can reach.
Is the ashwagandha safe? I've heard it's bad for thyroid.
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The generic ashwagandha on Amazon can cause issues. Peak Form uses KSM-66 — the clinical grade form that's been studied specifically for thyroid and stress response. It reduces cortisol which is what triggers your body to make more Reverse T3. It's the exact form recommended in peer-reviewed research.