Dizziness
Lightheadedness or feeling of imbalance.
TL;DR
Dizziness is a symptom, not a diagnosis. Sorting it into vertigo (spinning), presyncope (about to faint) or imbalance points to completely different causes — and BPPV, the commonest, is fixed with a repositioning manoeuvre, not a supplement.
Overview
The single most useful thing anyone can do with dizziness is describe it precisely, because the word covers at least three unrelated problems. True vertigo, a sense that the room is spinning or tilting, points to the inner ear or its central connections. Presyncope, a lightheaded, greying-out feeling, points to blood pressure and cardiac output. Disequilibrium, feeling unsteady on the feet without any spinning, points to proprioception, vision and cerebellar function. Benign paroxysmal positional vertigo is the most common cause overall: dislodged otoconia in a semicircular canal produce intense spinning lasting under a minute, triggered by rolling over in bed or looking up. It is diagnosed by the Dix-Hallpike test and cured in most people by the Epley manoeuvre, often in a single visit, which makes it one of the highest-value diagnoses in medicine. Vestibular neuritis causes days of continuous vertigo after a viral illness and improves with vestibular rehabilitation, not with rest. Meniere's brings vertigo with hearing loss and fullness. Orthostatic causes — dehydration, blood pressure medication, anaemia — dominate the presyncope group. Supplements have a narrow role: correcting B12, iron or vitamin D deficiency where these genuinely contribute. Nothing supplemental treats BPPV.
Common Symptoms
- •Spinning sensation triggered by head movement
- •Lightheadedness on standing
- •Unsteadiness when walking
- •Nausea with movement
- •Ear fullness or hearing change
- •Visual blurring during head turns
Common Causes
- •Benign paroxysmal positional vertigo
- •Vestibular neuritis or labyrinthitis
- •Orthostatic hypotension and dehydration
- •Antihypertensives, sedatives and diuretics
- •Anaemia or B12 deficiency
- •Vestibular migraine
- •Meniere'"'"'s disease
Root Causes
Otoconia displacement in the semicircular canals, vestibular nerve inflammation after viral illness, endolymphatic hydrops in Meniere's, orthostatic hypotension from dehydration or antihypertensives, anaemia, arrhythmia, vestibular migraine, and peripheral neuropathy affecting balance input.
How It's Diagnosed
Diagnostic Markers
- Dix-Hallpike test for posterior canal BPPV
- HINTS examination to distinguish peripheral from central causes
- Lying and standing blood pressure
- Full blood count, ferritin and B12
- ECG where presyncope or palpitations feature
- Audiometry if hearing is affected
When to See a Doctor
Seek emergency care for dizziness with any of the HINTS red flags: new severe headache, double vision, slurred speech, facial or limb weakness, difficulty swallowing, or inability to walk unaided — these suggest stroke rather than inner ear. Also see a doctor for dizziness with fainting, chest pain, or new one-sided hearing loss.
Supplements Studied For This
Vitamin D
Reasonable for people with recurrent BPPV and low vitamin D. Not a treatment for an active attack, which needs the Epley manoeuvre.
Vitamin B12
Worth testing B12 if dizziness comes with unsteadiness, tingling or a macrocytic blood count. Outside deficiency there is no case for supplementing.
Diet & Lifestyle
Suggested Pattern
No general diet treats dizziness. Sodium restriction to around 2000mg daily is specifically useful in Meniere'"'"'s disease, and adequate fluid intake matters for orthostatic causes.
Supporting Research
Adverse Events Associated with Melatonin for the Treatment of Primary or Secondary Sleep Disorders: A Systematic Review
Hawthorn (Crataegus spp.) in the treatment of cardiovascular disease: a review of pharmacology and clinical safety
Prevention of complications related to traumatic brain injury in children and adolescents with creatine administration: an open label randomized pilot study
A pilot study of Rhodiola rosea (Rhodax) for generalized anxiety disorder (GAD)
Neuroprotection and Therapeutic Implications of Creatine Supplementation for Brain Injury Complications
Frequently Asked Questions
Who It Affects
Dizziness accounts for around 3-4% of emergency department visits, and roughly 20% of adults report an episode in any given year.
Quick Facts
- •BPPV episodes last under a minute and are triggered by head position, not by standing up
- •The Epley manoeuvre resolves BPPV in roughly 80% of people after one or two treatments
- •Dizziness that is constant for days is rarely BPPV
- •Blood pressure and heart medications are among the most common reversible causes in older adults
Lifestyle Tips
- •Describe the sensation precisely to your clinician — spinning, faint, or unsteady changes the whole workup
- •Ask about the Dix-Hallpike test and Epley manoeuvre if episodes are brief and position-triggered
- •Stand up in stages and hydrate consistently if you feel faint rather than spinning
- •Do vestibular rehabilitation exercises rather than resting after vestibular neuritis
- •Review blood pressure and sedative medication timing with your prescriber
My Notes
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.