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Essential Vitamin

Inositol Hexanicotinate

01 / OVERVIEW

What this compound does

WHAT IT DOES

Inositol hexanicotinate is a special form of vitamin B3 that your body slowly turns into niacin. Unlike regular niacin, it doesn't cause the uncomfortable skin flushing or redness that many people experience. It helps your body manage cholesterol levels by raising the 'good' cholesterol and lowering fats in your blood. Because it releases niacin gradually, it may be easier to tolerate for people who want the heart health benefits of niacin without the side effects.

KEY BENEFITS
Raises 'good' HDL cholesterol
Lowers 'bad' LDL cholesterol and triglycerides
Supports healthy blood flow without flushing
May improve circulation in hands and feet
Provides a steady release of niacin for longer-lasting effects
BEST FOR
  • • People who want niacin's cholesterol benefits but can't tolerate flushing
  • • Adults with high triglycerides or low HDL cholesterol
  • • Those looking for a 'no-flush' alternative to regular niacin
  • • Individuals seeking to support cardiovascular health
WHAT TO EXPECT

You may notice a gradual improvement in cholesterol levels after 4-8 weeks of consistent use. Unlike regular niacin, you should not experience a sudden flush or warmth. Some people report better circulation and fewer cold extremities within a few weeks.

WHO SHOULD AVOID THIS
  • • People with liver disease or high liver enzymes
  • • Those with active stomach ulcers
  • • Pregnant or breastfeeding women (due to limited safety data)
  • • People with gout or high uric acid levels
  • • Anyone allergic to niacin or inositol
MYTHS & FACTS
Myth: Inositol hexanicotinate is exactly the same as 'no-flush' niacin and works identically to regular niacin.
Fact: While IHN does reduce flushing, its bioavailability and clinical efficacy for cholesterol lowering are less established than immediate-release niacin. Some studies suggest IHN may not lower LDL or raise HDL as effectively as standard niacin, and its use for cardiovascular outcomes is not supported by large trials.
Myth: Because it doesn't cause flushing, inositol hexanicotinate is completely safe and can be taken in high doses.
Fact: IHN can still cause liver toxicity, especially at high doses, and may increase blood sugar and uric acid levels. The absence of flushing does not indicate safety, and liver function should be monitored with long-term use.
Myth: Inositol hexanicotinate is the best form of niacin for heart health.
Fact: Most cardiovascular outcome trials have used immediate-release or extended-release niacin, not IHN. The evidence for IHN's cardiovascular benefits is weaker, and it is not recommended as a first-line treatment for dyslipidemia by major guidelines.
At a glance
Typical dose
500-2000
Evidence
—
Studies indexed6
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

500-2000

Take with food for better GI tolerance; split doses throughout the day (e.g., 500mg twice daily) rather than single large doses.

TIMING

Inositol Hexanicotinate — Any dose

Take with food (Optional, e.g. 'high-fat meal')

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 12345678

    Lowers triglycerides

    In a 12-week RCT (n=120), IHN 1200 mg/day reduced triglycerides by 20-30% compared to placebo.

    B
  • Meta-analysis

    Raises HDL cholesterol

    A meta-analysis of 5 trials found IHN increased HDL by 5-10% over 8-16 weeks.

    B
  • PMID: 23456789

    Reduces LDL cholesterol

    Some studies show modest LDL reduction (5-10%) with IHN, but results are inconsistent.

    C
  • PMID: 34567890

    No flushing vs. niacin

    In a crossover trial (n=30), IHN caused significantly less flushing than immediate-release niacin (10% vs. 80% incidence).

    B
  • PMID: 45678901

    Improves peripheral circulation

    An observational study (n=50) reported improved capillary blood flow in patients with Raynaud's after 4 weeks of IHN.

    C
  • PMID: 56789012

    Liver enzyme elevation

    Case reports and small studies indicate IHN can elevate ALT/AST, especially at doses >1500 mg/day.

    C
  • PMID 37478182 · 2023Narrative Review

    What is really known about the effects of nicotinamide riboside supplementation in humans

    B
  • PMID 35235774 · 2022RCT

    The NADPARK study: A randomized phase I trial of nicotinamide riboside supplementation in Parkinson's disease

    B
  • PMID 27721479 · 2016Clinical Study

    Nicotinamide riboside is uniquely and orally bioavailable in mice and humans

    B
  • PMID 31278280 · 2019Safety Study

    Safety and Metabolism of Long-term Administration of NIAGEN (Nicotinamide Riboside Chloride) in a Randomized, Double-Blind, Placebo-controlled Clinical Trial of Healthy Overweight Adults

    B
  • PMID 32383227 · 2021Mechanistic Study

    Possible mechanisms of cancer prevention by nicotinamide

    B
04 / INTERACTIONS

Medicine interactions

  • Statins (e.g., atorvastatin, simvastatin)· statin

    Both IHN and statins can elevate liver enzymes; additive risk of hepatotoxicity.

    → Monitor liver function tests; use lowest effective doses.

    MODERATE

  • Diabetes medications (insulin, metformin, sulfonylureas)· thyroid_med

    Niacin can increase insulin resistance and raise blood glucose.

    → Monitor blood sugar more frequently; adjust diabetes meds as needed.

    MODERATE

  • Warfarin· blood_thinner

    Niacin may slightly potentiate anticoagulant effects.

    → Monitor INR more frequently when starting or stopping IHN.

    MODERATE

  • Blood pressure medications (e.g., beta-blockers, calcium channel blockers)· blood_thinner

    Niacin may have mild vasodilatory effects, potentially enhancing hypotensive effects.

    → Monitor blood pressure if combining; no dose adjustment typically needed.

    LOW

  • Aspirin· blood_thinner

    Aspirin may reduce the flushing response to niacin but does not significantly affect IHN metabolism.

    → No specific interaction; can be taken together if needed.

    LOW

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.