Last month, a new client told me she’d tried “everything” for her exhaustion. CoQ10, iron, a fancy adrenal support blend, three different B vitamins, and a mitochondrial cocktail she’d read about online. Her bathroom cabinet looked like a supplement graveyard, and she was still waking up tired, dragging through her afternoons, and collapsing on the couch by 7pm.
“My blood tests are normal,” she said. “My GP says I’m fine. But I feel like I’m running on empty all the time.”
If you’ve ever felt this way, you’re not alone. TATT (Tired All The Time) is one of the most common reasons people book with me. And while supplements absolutely have a role to play, throwing everything at the problem without understanding why you’re tired rarely works.
Let me walk you through what I’ve learned after 12 years of working with exhausted clients, and what actually makes a difference when it comes to mitochondrial energy and persistent fatigue.
What Actually Causes TATT (Beyond Just Being Busy)
There’s a difference between normal tiredness and the kind of fatigue that doesn’t shift no matter how much you rest. Normal tiredness responds to a good night’s sleep or a weekend off. TATT doesn’t.
When someone tells me they’re tired all the time, I’m looking for patterns that point to deeper metabolic dysfunction. Your mitochondria are the energy-producing powerhouses in every cell of your body. When they’re not working optimally, everything feels harder. Getting out of bed, concentrating at work, exercising, even just staying present with your kids.
The usual suspects I investigate first:
- Nutrient deficiencies (iron, B vitamins, magnesium, CoQ10)
- Chronic stress and elevated cortisol
- Poor quality or insufficient sleep
- Blood sugar dysregulation
- Thyroid dysfunction (even when tests are “normal”)
- Hormonal imbalances
- Gut issues affecting nutrient absorption
- Chronic inflammation
Sometimes TATT is a symptom of something bigger. Subclinical hypothyroidism, insulin resistance, perimenopause, or post-viral fatigue. That’s why I don’t jump straight to supplements without understanding the full picture first.
I wrote more about this here: Is a Naturopath Worth It for Chronic Fatigue?
How I Assess Mitochondrial Function in Clinic
Standard blood work often misses the energy story. Your GP might test haemoglobin and thyroid, call it normal, and send you on your way. But normal doesn’t mean optimal, and it certainly doesn’t explain why you feel terrible.
When I’m investigating energy issues, I’m looking at functional markers that tell me how well your cells are actually producing ATP (the energy currency your body runs on).
Key markers I assess:
- Ferritin (iron stores, not just haemoglobin)
- Active B12 and folate
- Vitamin D
- Magnesium (red blood cell, not serum)
- Thyroid panel (TSH, free T3, free T4, antibodies)
- Fasting glucose and insulin
- Cortisol (often via salivary testing)
- Inflammatory markers (CRP, homocysteine)
The difference between normal and optimal can be significant. A ferritin of 15 might be “within range,” but in my experience, most people feel their best when it’s above 50. Same goes for B12, vitamin D, and thyroid hormones.
If you’re interested in how functional pathology differs from standard testing, I’ve covered that in detail here: The Hidden Gaps in Your Blood Work
Key Points: Why Mitochondrial Health Matters for Energy
- Mitochondria produce over 90% of the energy your cells need to function
- Nutrient deficiencies directly impair mitochondrial ATP production
- Chronic stress, inflammation, and poor sleep damage mitochondrial membranes
- Standard blood tests often miss subclinical deficiencies that affect energy
- Optimal nutrient levels are different from “normal” lab ranges
The Supplements That Actually Move the Needle
Let’s talk about what works. These are the supplements I prescribe most often for mitochondrial support and chronic fatigue, based on what I see shift energy levels in clinic.
CoQ10 (Ubiquinol vs. Ubiquinone)
This one comes up in almost every chronic fatigue case I work with. Coenzyme Q10 is a critical component of the mitochondrial electron transport chain. Without adequate CoQ10, your cells can’t produce ATP efficiently.
There are two forms: ubiquinone (the oxidised form) and ubiquinol (the reduced, active form). Most people absorb ubiquinol better, especially if they’re over 40 or dealing with gut issues.
Dosing ranges I use in practice:
- General mitochondrial support: 100-200mg daily
- Chronic fatigue or statin use: 200-400mg daily
- Always taken with food (it’s fat-soluble)
Who benefits most:
- Anyone on statin medications (which deplete CoQ10)
- People with chronic fatigue, fibromyalgia, or post-viral fatigue
- Those with cardiovascular concerns
- Anyone over 40 (natural production declines with age)
I don’t always start with CoQ10, though. If someone’s ferritin is sitting at 12, or their B12 is borderline, those deficiencies need addressing first.
Magnesium (But Not All Forms Are Equal)
Magnesium is involved in over 300 enzymatic reactions in your body, including ATP synthesis. Most Australians don’t get enough from diet alone, and chronic stress burns through magnesium faster than you can replace it.
The form matters more than most people realise. Magnesium oxide is cheap and poorly absorbed. Magnesium citrate can help with constipation but might be too much if your gut is sensitive.
The forms I recommend most often:
- Magnesium glycinate: Best for energy, sleep, and nervous system support without laxative effects
- Magnesium threonate: Crosses the blood-brain barrier, helpful for brain fog and anxiety
- Magnesium citrate: When constipation is part of the picture
How to know if you’re deficient:
- Muscle cramps or twitches
- Poor sleep quality
- Anxiety or feeling “wired but tired”
- Headaches or migraines
- Chocolate cravings (yes, really)
Blood tests for magnesium are notoriously unreliable because most of it’s stored in your bones and tissues, not your serum. I usually trial magnesium supplementation and see how people respond.
Common mistakes people make:
- Taking too much too fast (start low and build up)
- Taking it at the wrong time (evening for sleep, morning for energy)
- Choosing the wrong form for their symptoms
B Vitamins (Especially B12 and Folate)
B vitamins are cofactors in nearly every step of mitochondrial energy production. Without adequate B12, folate, and other B vitamins, your cells can’t convert food into usable energy.
This is where activated forms matter. Methylcobalamin and methylfolate are the active forms of B12 and folate. If you have MTHFR gene variations (which about 40% of people do), you might struggle to convert synthetic folic acid into the active form your body can use.
Signs you might need more than just a multivitamin:
- Persistent fatigue despite “normal” blood work
- Brain fog or poor concentration
- Low mood or anxiety
- Tingling in hands or feet (B12 deficiency)
- Elevated homocysteine
I’ve written extensively about MTHFR here if you want to understand the genetics side: MTHFR Explained
Dosing considerations:
- B12: 500-1000mcg daily (methylcobalamin or adenosylcobalamin)
- Folate: 400-800mcg daily (as methylfolate, not folic acid)
- B complex: Usually preferable to isolated B vitamins, as they work synergistically
I don’t often use high-dose B vitamins long-term unless there’s a clear deficiency. Once levels are optimised, a good quality B complex is usually sufficient.
Iron (When It’s Low and When It’s Not the Answer)
Iron deficiency is the most common nutritional deficiency I see in tired women. And I mean see, because the standard tests often miss it.
Your GP might test haemoglobin (which measures red blood cells) but not ferritin (which measures iron stores). You can have “normal” haemoglobin and still be functionally iron deficient.
Why ferritin matters more than haemoglobin:
- Ferritin tells you about your iron stores, not just your current red blood cell count
- Low ferritin affects energy, hair health, immune function, and thyroid conversion
- Most people feel best with ferritin above 50-70, but labs often consider anything above 15 “normal”
How to supplement without wrecking your gut:
- Start with iron bisglycinate (much gentler than ferrous sulfate)
- Take on an empty stomach if tolerated, with vitamin C
- Avoid tea, coffee, and calcium within 2 hours of iron
- Add a probiotic if constipation is an issue
I’ve covered this in more detail here: Iron Supplements Making You Constipated?
Important: Not everyone with fatigue needs iron. If your ferritin is already optimal, more iron won’t help and might even cause oxidative stress. This is why testing first matters.
L-Carnitine
L-carnitine shuttles long-chain fatty acids into your mitochondria where they’re burned for fuel. Without adequate carnitine, your cells can’t efficiently use fat for energy.
Who responds well:
- People eating low-protein diets (carnitine is primarily found in meat)
- Those with chronic fatigue or post-viral fatigue
- Anyone dealing with brain fog alongside physical exhaustion
The acetyl vs. standard form debate:
- Acetyl-L-carnitine: Crosses the blood-brain barrier better, helpful for cognitive fatigue
- L-carnitine: Better for physical energy and exercise recovery
Dosing: 500-2000mg daily, usually split into two doses. I prefer acetyl-L-carnitine for most clients because brain fog and physical fatigue often go hand in hand.
Alpha Lipoic Acid
Alpha lipoic acid (ALA) is both a powerful antioxidant and a cofactor in mitochondrial energy production. It’s particularly useful when blood sugar dysregulation is part of the fatigue picture.
What it does:
- Supports glucose metabolism and insulin sensitivity
- Protects mitochondria from oxidative damage
- Regenerates other antioxidants (vitamin C, vitamin E, glutathione)
- May improve nerve function
Dosing: 300-600mg daily, taken on an empty stomach for best absorption.
I often pair ALA with CoQ10 and magnesium when someone’s dealing with both fatigue and blood sugar issues. It’s one of those supplements that addresses multiple root causes at once.
PQQ (Pyrroloquinoline Quinone)
PQQ is the newer kid on the block for mitochondrial support. It doesn’t just protect existing mitochondria – it actually stimulates the growth of new mitochondria (a process called mitochondrial biogenesis).
What the research actually says:
- Small but promising studies on cognitive function and energy
- Appears to work synergistically with CoQ10
- May support cardiovascular health
When it’s worth adding to the mix:
- Severe or long-standing chronic fatigue
- Post-viral fatigue syndromes
- When other mitochondrial supports have helped but there’s still a gap
Dosing: 10-20mg daily, usually in combination with CoQ10.
I don’t start with PQQ. It’s more expensive, and I want to address the basics (iron, B12, magnesium) first. But for stubborn cases, adding PQQ to a mitochondrial protocol can sometimes be the missing piece.
Key Points: The Core Mitochondrial Support Stack
Start here for most people:
- CoQ10 (100-200mg ubiquinol)
- Magnesium glycinate (300-400mg elemental)
- Active B complex with methylated B12 and folate
- Iron bisglycinate (only if ferritin is low)
Add these for more complex cases:
- Acetyl-L-carnitine (500-1000mg twice daily)
- Alpha lipoic acid (300-600mg)
- PQQ (10-20mg with CoQ10)
The Supplements I Don’t Recommend (And Why)
After 12 years in practice, I’ve seen plenty of overhyped supplements that promise energy but rarely deliver.
Adrenal support blends are often a waste of money. Most contain low doses of multiple herbs without addressing why your adrenals are stressed in the first place. If cortisol is genuinely dysregulated, you need targeted support based on test results, not a kitchen-sink formula.
Generic multivitamins usually contain synthetic forms of B vitamins and minerals that don’t absorb well. The doses are often too low to be therapeutic for someone with genuine deficiencies.
Energy drinks and caffeine pills might give you a short-term boost, but they’re borrowing energy from tomorrow. They don’t address the underlying mitochondrial dysfunction, and they often make the crash worse.
More isn’t better. I’ve seen clients taking 15+ supplements at once, hoping something will work. That approach usually backfires. It’s expensive, overwhelming, and you can’t tell what’s actually helping.
Start with the basics, test where you can, and add strategically based on your individual picture.
Beyond Supplements: What Actually Supports Energy Long-Term
Supplements are tools, not solutions. If your sleep is terrible, your blood sugar is all over the place, and you’re running on stress hormones, no amount of CoQ10 will fix that.
Sleep Hygiene Isn’t Negotiable
You cannot supplement your way out of chronic sleep deprivation. If you’re only getting 5-6 hours a night, or your sleep is fragmented, mitochondrial function will suffer no matter what you take.
Non-negotiables:
- Consistent sleep and wake times (even on weekends)
- Dark, cool room
- Screen-free hour before bed
- Managing middle-of-the-night waking (often blood sugar or cortisol related)
The Blood Sugar Connection Most People Miss
Blood sugar crashes create fatigue, brain fog, and cravings. If you’re skipping breakfast, relying on coffee and carbs, and crashing by 3pm, your mitochondria are constantly scrambling to keep up.
What helps:
- Protein with every meal (20-30g minimum)
- Avoiding long gaps between meals (3-4 hours max for most people)
- Limiting refined carbs and sugar
- Eating a substantial breakfast within an hour of waking
Movement vs. Exercise When You’re Exhausted
High-intensity exercise can worsen fatigue if your mitochondria are already struggling. But complete rest isn’t the answer either.
What I recommend:
- Start with gentle movement (walking, yoga, stretching)
- Build gradually as energy improves
- Listen to post-exertional malaise (if you crash after activity, you’ve done too much)
- Prioritise daily movement over occasional intense workouts
Stress Management That Doesn’t Require an Hour of Meditation
Chronic stress is one of the biggest drains on mitochondrial function. Elevated cortisol damages mitochondrial membranes, depletes magnesium and B vitamins, and impairs sleep.
You don’t need a perfect meditation practice. You need realistic strategies that fit your life:
- 5-10 minutes of breathing exercises
- Regular time outside
- Setting boundaries at work
- Saying no to things that drain you
- Getting support when you need it
I’ve written more about managing cortisol here: Natural Ways to Lower Cortisol
Quality Matters More Than You Think
Not all supplements are created equal. The magnesium you buy at the supermarket is not the same as what I prescribe in clinic, even if the label looks similar.
What to look for:
- Therapeutic doses (not just token amounts)
- Bioavailable forms (methylated B vitamins, chelated minerals)
- Third-party testing for purity
- Minimal fillers and excipients
- Manufacturing standards (GMP certified)
Practitioner-only supplements cost more because they’re formulated with absorption and efficacy in mind, not just profit margins. When someone’s spending money on supplements that don’t work because they’re poorly absorbed or under-dosed, it’s frustrating for everyone.
I’ve covered this debate in detail here: Are Naturopathic Supplements Worth the Price?
When to Get Professional Support
Sometimes DIY doesn’t cut it. If you’ve been exhausted for months (or years), tried various supplements, and nothing’s shifted, it’s time to dig deeper.
Signs your fatigue needs more than supplements:
- You’ve been tired for more than 3-6 months despite rest and lifestyle changes
- Your fatigue is getting worse, not better
- You’re experiencing other symptoms (hair loss, weight changes, mood issues, pain)
- Basic supplements haven’t helped or made things worse
- You’re not sure where to start or what to test
What comprehensive testing looks like:
- Full thyroid panel (not just TSH)
- Iron studies (ferritin, serum iron, transferrin saturation)
- Active B12, folate, vitamin D
- Fasting glucose and insulin
- Cortisol mapping (salivary testing)
- Inflammatory markers
- Sometimes: gut testing, hormones, or heavy metals depending on presentation
Working with a naturopath means you get a personalised plan based on your test results, your symptoms, and your lifestyle. Not a generic protocol from the internet.
Trial and error without a clear plan usually wastes time and money. I’ve seen too many people spend hundreds of dollars on supplements that were never going to help because they were addressing the wrong problem.
If you’re dealing with chronic fatigue and want support, I work with clients Australia-wide via online consultations: Chronic Fatigue Support
Final Thoughts
There’s no one-size-fits-all supplement protocol for TATT. What works for your friend or what you read in a Facebook group might not be what you need.
The most effective approach involves:
- Understanding why you’re tired (testing, not guessing)
- Addressing nutrient deficiencies first
- Supporting mitochondrial function with targeted supplements
- Fixing sleep, blood sugar, and stress
- Giving it time (real improvement takes weeks to months, not days)
Realistic timeline for seeing improvements:
- Weeks 1-2: Might not feel much yet (nutrients are building up)
- Weeks 3-6: Energy starts lifting, less crashing in afternoons
- Weeks 8-12: More consistent energy, better sleep, improved resilience
- Months 3-6: Significant improvement if you’ve addressed root causes
If you’ve tried everything and nothing’s worked, it usually means one of two things: you’re addressing the wrong problem, or there’s an underlying condition that needs investigating (thyroid, hormones, chronic infection, mould exposure, etc).
Ready for Personalised Support?
If you’re tired of being tired and want a clear plan based on your individual needs, I’d love to help.
In an initial consultation, we’ll review your health history, discuss your symptoms in detail, and order any testing needed to understand what’s driving your fatigue. From there, I’ll create a tailored protocol that addresses your specific deficiencies and root causes – not just throw supplements at the problem.
Book an online consultation here to get started with a personalised energy restoration plan.
