Not sure which protocol fits your symptoms? Take Dr. Cassie's 2-Minute Clinical Quiz →

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FROM DR. CASSIE'S SHELF | THE OFFICIAL CLINICAL STORE

Everything's normal. Except how you feel.

The exact clinical formulas developed by dual board-certified endocrinologist Dr. Cassie Smith, MD for the real symptoms that standard reference ranges ignore:

  • Exhausted by 2:00 PM (reaching for coffee just to make it through the workday)
  • Bloated by dinner (waking up flat, but painfully distended by 6:00 PM)
  • Wide awake at 3:00 AM (racing mind, night sweats, and morning exhaustion)
  • Lab tests that insist you are 'fine' (while your body feels completely depleted)
Shop Doctor-Formulated Protocols ↓Take the 2-Minute Protocol Finder Quiz →
  • 60-Day Full Refund Clinical Guarantee
  • Over 12,000 Women Supported in Clinic & Online
  • 100% One-Time Purchases (No Forced Subscriptions)
Modern Endocrine bottles: Mighty Methylfolate, DIM Elite CDG, Digestive Enzymes and Probiotic Align, with white capsules on stacked books in soft light
Vetted like your health depends on it. Because it does.Dr. Cassie Smith, MD

  • Dual Board-Certified Physician

    Formulated by Dr. Cassie Smith, MD (Internal Medicine and Endocrinology, Diabetes, & Metabolism).

  • Clinical Trial Dosing

    Zero low-dose proprietary blends; every active compound matches published human research.

  • Independent Third-Party Verification

    Every production run tested for purity, potency, and absence of heavy metals.

  • Certified cGMP Manufacturing

    Produced in FDA-registered, cGMP-certified facilities in the United States.

Dr. Cassie Smith, MD, smiling, in a navy and gold blouse

Dr. Cassie Smith, MD

Dual Board-Certified Endocrinologist

Author of Fix Your Gut, Fix Your Hormones

A CLINICAL NOTE FROM DR. CASSIE SMITH, MD

'The Biggest Mistake I See Patients Make Is Starting in the Wrong Order.'

  • Why I formulated these products"Whether you are a patient at our Oklahoma City clinic, working with our telehealth team in one of our 46 states, or you found us through Fix Your Gut, Fix Your Hormones... I created these formulas because retail supplements repeatedly let my patients down."
  • Why retail supplements fail"Most commercial formulas use underdosed ingredients, cheap synthetic folic acid, or harsh chemical fillers that irritate the gut lining."
  • The clinical secret is sequencing"Hormone support cannot hold inside an inflamed digestive tract. If your gut lining is inflamed, your body cannot absorb active nutrients, and your liver recirculates spent estrogen right back into your bloodstream."
  • How to use these protocols"Start with your digestive foundation (Rest & Rebuild), then introduce targeted hormone clearance (Rebalance). When you follow the right biological sequence, the results finally stick."

Dr. Cassie Smith, MD

Dual Board-Certified Endocrinologist, Author, and Founder

START WHERE IT HURTS

What's Actually Bothering You?

Select your primary symptom below to see Dr. Cassie's matched starting protocol:

Mighty Methylfolate, DIM Elite CDG and Probiotic Align bottles on a marble table, with a woman in a cream sweater behind them
  1. 1I'm Bloated and My Gut's a MessI wake up flat, but by 4:00 PM my waistband is digging into my stomach.

    What Is Actually Happening

    Food is fermenting in the upper gut due to low stomach acid and a porous intestinal lining, triggering systemic inflammation.

    Dr. Cassie's Recommended Starting Point

    The Fix Your Gut Protocol (Rest + Rebuild)

    View Gut Protocol →
  2. 2My Hormones Feel Completely OffOne week before my period, I feel anxious, irritable, and not like myself.

    What Is Actually Happening

    Stagnant liver clearance and gut imbalances cause spent estrogen to recirculate, triggering estrogen dominance, breast tenderness, and mood crashes.

    Dr. Cassie's Recommended Starting Point

    DIM Elite CDG (Rebalance Estrogen Clearance)

    View Hormone Protocol →
  3. 3Exhausted by 2:00 PMMy morning coffee wears off by lunchtime, and I hit a complete brick wall.

    What Is Actually Happening

    Sluggish cellular methylation (the process your body uses to convert food and B vitamins into usable cellular energy) leaves cells depleted of fuel.

    Dr. Cassie's Recommended Starting Point

    Mighty Methylfolate + Cellular Energy (Rest + Fuel)

    View Energy Protocol →
  4. 4The Weight Will Not MoveI am eating clean and working out, but the scale will not budge an inch.

    What Is Actually Happening

    Gut inflammation drives up cortisol (your stress hormone) and blunts natural GLP-1 signaling, locking your body into chronic fat storage mode.

    Dr. Cassie's Recommended Starting Point

    Metabolic Gut & Reset Protocol (Rebuild + Rebalance)

    View Metabolic Protocol →
  5. 5My Thyroid Is Off and Nobody's Really LookingMy hair is shedding in clumps, and I am always freezing in a warm room.

    What Is Actually Happening

    Over 80% of active thyroid conversion (turning inactive T4 into active calorie-burning T3) occurs in the gut and liver. When the gut is inflamed, conversion stalls.

    Dr. Cassie's Recommended Starting Point

    Thyroid Balance Protocol (Rebalance T3 Conversion)

    View Thyroid Protocol →
  6. 6I Don't Feel Like Myself Anymore (Brain Fog)I walk into rooms and forget why, and my thoughts feel slow and muffled.

    What Is Actually Happening

    Inflammatory particles cross the gut-brain axis, depleting key cognitive messengers like acetylcholine and dopamine.

    Dr. Cassie's Recommended Starting Point

    Neuro-Focus Protocol with Alpha-GPC (Rebalance Clarity)

    View Cognitive Protocol →
Experiencing more than one of these symptoms? Take Dr. Cassie's 2-Minute Diagnostic Quiz to Map Your Combined Profile →

WHY NOTHING HAS WORKED PERMANENTLY YET

You Didn't Fail.You Started in the Wrong Place.

If you have spent hundreds of dollars on hormone drops, detox teas, and probiotics that fizzled out after three weeks, your body is not broken. You simply took them in the wrong sequence.

Why Conventional Supplements Fail

  • Hormones cannot balance inside an inflamed gutWhen your digestive barrier is irritated, your intestinal cells cannot absorb targeted hormone nutrients.
  • Spent hormones get reabsorbedWhen your liver and gut enzymes are overwhelmed, discarded estrogen recirculates directly back into your bloodstream.
  • ResultYou experience a brief two-week surge, followed by an immediate return of bloat, fatigue, and hormonal imbalance.

Dr. Cassie's Three-Phase Clinical Protocol

  1. Step 1

    Rest

    Calm Mucosal Inflammation

    Glowing illustration of an inflamed gut calming down

    What It Does

    Extinguishes digestive fires and quiets the systemic immune alarm.

    Key Actions

    • Soothes the irritated intestinal lining using gentle, concentrated botanicals.
    • Reduces inflammatory signaling compounds (cytokines) that disrupt ovarian communication.

    What You Notice

    Visible relief in stomach distension and bloat within the first 7 to 14 days.

  2. Step 2

    Rebuild

    Seal the Gut Barrier

    Glowing illustration of a healthy gut and microbiome

    What It Does

    Repairs microscopic gaps in the intestinal wall and restores beneficial flora.

    Key Actions

    • Feeds tight cellular junctions with therapeutic amino acids and mucosal protectants.
    • Activates native gut signaling peptides such as natural GLP-1 for steady metabolism and satiety.

    What You Notice

    Food sensitivities decrease, afternoon energy stabilizes, and gas disappears.

  3. Step 3

    Rebalance

    Clear Hormones & Optimize Thyroid

    Glowing balanced scales over a network of molecules

    What It Does

    Restores healthy estrogen clearance and turns on active thyroid metabolism.

    Key Actions

    • Binds reactive estrogen metabolites with Calcium D-Glucarate so they leave the body permanently.
    • Provides selenium and zinc cofactors to convert storage thyroid hormone (T4) into active fuel (T3).

    What You Notice

    Predictable, comfortable menstrual cycles, balanced mood, and clear mental focus.

Find Your Starting Phase in 2 Minutes →

DOCTOR-FORMULATED PROTOCOLS BY PHASE

Where Most Women Start

Choose the protocol that matches the symptom cluster you want to address first.

Phase 1 & 2 Foundation (Rest + Rebuild)

Fix Your Gut Protocol: Metaburn, The Remodeler powder and Probiotic Align

4.9 / 5.0 from 428 verified reviews

Fix Your Gut Protocol

The Foundation System

Clinical Role: Phase 1 & 2 (Calm Inflammation & Seal the Barrier)

Best For: Daily bloating, irregular digestion, food sensitivities, and stagnant metabolism.

Key Clinical Benefits

  • Seals the Gut Barrier: Zinc Carnosine and L-Glutamine repair microscopic junctions to prevent inflammatory leaks.
  • Soothes Digestive Tissue: Deglycyrrhizinated Licorice (DGL) and Marshmallow Root coat and calm the mucosal lining.
  • Supports Native GLP-1: Targeted gut peptides naturally support healthy appetite regulation and blood sugar balance.

Simple Daily Routine: 3 capsules each morning with your first meal.

One-Time Purchase$154

Subscribe & Save 10%$138.60

Ships every 30 days; cancel or pause anytime

Order the Fix Your Gut Protocol →
Mighty Methylfolate, 60 capsules, with white capsules beside the bottle

4.8 / 5.0 from 187 verified reviews

Mighty Methylfolate + Cellular Energy

Clinical Role: Phase 1 (Cellular Restoration & Energy)

Best For: The 2:00 PM afternoon slump, sluggish mornings, and persistent brain fog.

Key Clinical Benefits

  • Bioavailable B9 (L-5-MTHF): Pre-methylated folate that bypasses genetic roadblocks to power cellular energy directly.
  • Brain-Ready Choline (Alpha-GPC): Crosses the blood-brain barrier to replenish acetylcholine, the primary neurotransmitter for mental focus.
  • Stimulant-Free: Clean mitochondrial fuel without caffeine jitters or afternoon crashes.

Simple Daily Routine: 1 capsule daily with water.

One-Time Purchase$44

Subscribe & Save 10%$39.60

Add Mighty Methylfolate to Cart →

Phase 3 Targeted Support (Rebalance Hormones & Thyroid)

DIM Elite CDG, 90 capsules, with white capsules beside the bottle

4.9 / 5.0 from 612 verified reviews

DIM Elite CDG

Hormonal Clearance & Estrogen Detox

Clinical Role: Phase 3 (Clear Stagnant Hormones)

Best For: Irregular or painful periods, luteal phase mood swings, hormonal cystic acne, and breast tenderness.

Key Clinical Benefits

  • DIM (Diindolylmethane): Cruciferous phytonutrient that guides estrogen into gentle, protective clearance pathways.
  • CDG (Calcium D-Glucarate): Inhibits the gut enzyme beta-glucuronidase, preventing recycled estrogen from re-entering your blood.
  • BioPerine: Standardized black pepper extract that increases DIM nutrient absorption by up to 30%.

Simple Daily Routine: 1 to 2 capsules daily with food.

One-Time Purchase$60

Subscribe & Save 10%$54.00

Order DIM Elite CDG →
Thyroid Balance, 120 capsules, on a dark blue stand with capsules, Brazil nuts and turmeric root

4.9 / 5.0 from 239 verified reviews

Thyroid Balance

Active Metabolic & T3 Conversion Support

Clinical Role: Phase 3 (Metabolic Rate & Temperature)

Best For: Feeling constantly freezing, morning sluggishness, thinning hair, and resistant weight.

Key Clinical Benefits

  • Enzyme Cofactors (Selenium & Zinc): Essential trace minerals that trigger the conversion of storage T4 into active T3.
  • Adaptogenic Support (Ashwagandha KSM-66): Helps lower excess cortisol, shielding thyroid receptor sites from chronic stress.
  • Cellular Amino Acid (L-Tyrosine): The foundational building block needed to manufacture native thyroid hormones.

Simple Daily Routine: 2 capsules every morning with breakfast.

One-Time Purchase$39

Subscribe & Save 10%$35.10

Order Thyroid Balance →

Best-Value Doctor's Recommended Starter Bundle

The Complete Hormone Reset System

Phases 1, 2, and 3 Combined

Clinical Role: Comprehensive 60-Day Gut & Hormone Restoration

5.0 / 5.0 from 518 verified reviews

What Is Included in the System

  • 1x Fix Your Gut Protocol System (Phase 1 & 2: Rest & Rebuild)
  • 1x DIM Elite CDG 90-Count (Phase 3: Estrogen Clearance)
  • 1x Mighty Methylfolate 60-Count (Cellular Energy & Neuro Support)
  • Free Bonus: Dr. Cassie Smith's 60-Day Patient Protocol Guide & Meal Companion ($37 Value)
DIM Elite CDG and Mighty Methylfolate bottles with capsules and a protocol guide booklet

Bundle Value: $258

$199

Save $59 + Free Priority US Shipping

Subscribe & Save 15%: $179.10 · Save $78.90 + Free Shipping

Claim Your Complete Reset System (Save $59) →
A hand holding up a single white capsule against a blue sky

FREE CLINICAL TRIAGE TOOL

Stop Guessing in the Supplement Aisle. Get Dr. Cassie's Exact Clinical Protocol in 2 Minutes.

Answer seven straightforward questions about your daily symptoms to receive your tailored, doctor-designed roadmap:

  1. 1

    Map Your Symptom Timings (60 Seconds)

    Tell us when you feel exhausted, how your stomach feels after dinner, and how your cycle behaves.

  2. 2

    Identify Your Biological Phase (30 Seconds)

    Our intake tool analyzes whether your primary bottleneck is mucosal gut irritation (Rest), barrier leakage (Rebuild), or blocked hormone clearance (Rebalance).

  3. 3

    Receive Your Custom Protocol (Instant Screen Results)

    Get your exact starting formula, daily timing recommendations, and clinical milestone milestones for weeks 1 through 8.

Over 24,000 women have used this clinical assessment to find their starting protocol. 100% free, private, and instant.

Start Your 2-Minute Clinical Assessment →

REAL WOMEN. VERIFIED TRANSFORMATIONS.

From 'Your Labs Look Normal' to Finally Feeling Like Yourself Again.

Read how women who were dismissed, exhausted, and stuck in the supplement cycle broke through by fixing the gut-hormone axis in the right order.

"I finally tossed out the oversized desk cardigan I used to hide my bloat."

  • BeforeWoke up with a flat stomach, but looked six months pregnant by 4:00 PM every single workday.
  • Week 3Abdominal tightness and post-lunch digestive gas dropped by over 80%.
  • Month 2Energy remained completely stable during late afternoon meetings without extra coffee.
  • NowWearing high-waisted jeans to dinner without unbuttoning in the car on the way home.

Elena R., 38, Austin, TX

Verified Buyer | Fix Your Gut Protocol | 4 Months

"My monthly week of PMS panic and cystic jawline bumps simply disappeared."

  • BeforeSevere luteal-phase mood drops on day 21, painful breast tenderness, and cystic acne along the jawline.
  • Month 1Noticeably less breast tenderness and smoother digestion.
  • Month 2Period arrived right on schedule without the customary week of emotional overwhelm and tears.
  • NowClear skin throughout the entire month and predictable, pain-free cycles.

Danielle M., 42, Denver, CO

Verified Buyer | DIM Elite CDG + Fix Your Gut | 6 Months

"The only endocrine line I trust for both my patients and myself."

  • Clinical QualityDosed to actual clinical research standards rather than dusted into low-cost proprietary blends.
  • Effective SynergiesThe combination of Calcium D-Glucarate for estrogen detox and pre-methylated B9 for cellular energy works rapidly.
  • Patient OutcomesConsistently delivers measurable improvements in digestive comfort and hormonal stability for patients dismissed by standard labs.

Dr. Rachel V., DNP, APRN, Functional Medicine Nurse Practitioner, Chicago, IL

Healthcare Practitioner Review | The Complete Reset System | Clinic Recommender

"My morning brain fog cleared, and my hands are no longer ice blocks."

  • BeforeTold her TSH was 'normal,' but felt freezing cold indoors, woke up exhausted, and lost hair in the shower.
  • Day 30Hands and feet warmed up, and the heavy morning brain fog completely lifted.
  • Month 3Shower hair shedding returned to normal, and energy stays steady from 7:00 AM to 9:00 PM.

Caroline T., 49, Charlotte, NC

Verified Buyer | Thyroid Balance + Mighty Methylfolate | 3 Months

  • 94%

    experienced measurable reduction in daily bloat within 21 days.

  • 89%

    reported calmer cycles and improved mood by cycle two.

  • 96%

    reported finally feeling that their symptoms were medically understood.

100% CLINICAL CONFIDENCE

The 60-Day 'Finally Heard' Guarantee: Test Dr. Cassie's Protocol for a Full 60 Days. If It Doesn't Work, You Pay Nothing.

Real endocrine and digestive healing takes biological time: your gut lining requires 21 to 30 days to seal its mucosal barrier, and your cycle requires a full monthly rhythm to reflect balanced estrogen and thyroid clearance. That is why we give you a full 60 days to evaluate your results.

  1. 1

    Order Your Recommended Protocol Today

    Your 60-day window begins the day your package arrives at your front door.

  2. 2

    Take It Consistently for 30 to 45 Days

    Follow Dr. Cassie's daily routine to allow the Rest, Rebuild, and Rebalance phases to work.

  3. 3

    Measure Your Real-World Results

    Notice your digestion, your 2:00 PM energy, your cycle symptoms, and your morning clarity.

  4. 4

    Keep the Results or Keep Your Money

    If you do not feel an undeniable shift, email our clinical team at support@shopmodernendocrine.com. We will immediately refund 100% of your purchase price. You do not even have to return empty bottles.

Over 98.4% of women who begin Dr. Cassie's protocols keep taking them. If you are in the 1.6% who does not see results, you pay nothing.

Frequently Asked Questions

Do I need to be a patient at the Modern Endocrine clinic to order these supplements?
  • No: Modern Endocrine's clinical practice in Oklahoma City provides medical consultations and telehealth across 46 states, but these retail protocols were formulated specifically so anyone can access Dr. Cassie's clinical formulations directly from home without needing a doctor's appointment.
  • Every product is available for open purchase and is backed by Dr. Cassie's 60-day money-back guarantee.
How do I know whether my main problem is my gut, my hormones, or my thyroid?
  • In female biology, these systems are deeply interconnected: gut inflammation blunts thyroid hormone conversion and blocks healthy estrogen elimination.
  • If you have multiple symptoms (such as bloating combined with fatigue and irregular periods), start with Dr. Cassie's 2-Minute Quiz above to find which phase needs attention first.
I have already tried probiotics and hormone supplements that failed. Why will this work?
  • Most supplements use wrong sequencing: Taking hormone herbs into an inflamed gut guarantees poor absorption and recycled hormones.
  • Most supplements are underdosed: Modern Endocrine protocols use therapeutic clinical trial doses, free of cheap fillers and synthetic folic acid.
  • Our 3-step sequence fixes the root cause: Rest the gut first, Rebuild the barrier second, and Rebalance hormones third.
Can I take these protocols if I am on thyroid medication, HRT, or birth control?
  • Modern Endocrine formulas use clean micronutrients and gentle botanicals that work in harmony with your physiology.
  • Clinical rule of thumb: Take our protocols at least 2 hours away from prescription thyroid medications (such as levothyroxine) to avoid competing for absorption.
  • As with any new wellness routine, we always encourage discussing your protocol with your personal healthcare provider.
How quickly can I realistically expect results?
  • Weeks 1 to 2 (Rest Phase): Noticeable reduction in daily abdominal bloating and post-meal digestive heaviness.
  • Weeks 3 to 4 (Rebuild Phase): Steadier afternoon energy without caffeine crashes, plus clearer morning focus.
  • Month 2 (Rebalance Phase): Calmer, more predictable menstrual cycles, reduced breast tenderness, and clearer skin.
Am I locked into a recurring subscription?
  • No: Every protocol can be purchased as a one-time order with zero recurring charges.
  • If you select Subscribe & Save to receive 10% to 15% off and free shipping, you have total control to pause, adjust delivery dates, or cancel at any time with one click in your account.
Are these formulas safe for sensitive digestive tracts?
  • Yes. Dr. Cassie formulated these products specifically for patients with delicate digestion.
  • 100% free of gluten, dairy, soy, corn, artificial sweeteners, synthetic food dyes, and magnesium stearate.
  • Encapsulated in clean vegetarian cellulose capsules that dissolve smoothly without gastric distress.

WEEKLY CLINICAL INSIGHTS

The Weekly Clinical Dispatch by Dr. Cassie Smith, MD

Every Sunday morning, Dr. Cassie breaks down one complex hormone, gut, or metabolic topic the way she explains it to private patients in her clinical office:

  • Why standard lab ranges label sick women 'normal'
  • Food pairings that soothe mucosal gut inflammation
  • Simple daily adjustments to support natural estrogen clearance

Includes Instant Free Download: The Patient's Lab Test Decoder: What 'Normal' Really Means for Women.

Zero spam. Zero selling of your data. Unsubscribe whenever you wish with a single click.

Protocols ($39+)Take 2-Min Quiz →