Home Ingredients HTEssence® (Hydroxytyrosol — Wacker)
AntioxidantCardiovascular

HTEssence® (Hydroxytyrosol — Wacker)

Olea europaea
Evidence Level
Limited
1 Clinical Trial
3 Documented Benefits
2/5 Evidence Score

HTEssence® is a high-purity, nature-identical hydroxytyrosol from Wacker, the olive polyphenol with one of the highest antioxidant capacities of any natural compound. Hydroxytyrosol is studied for supporting cardiovascular health and protecting cells from oxidative stress.

Studied Dose Commonly 5 to 25 mg of hydroxytyrosol per day.
Active Compound Nature-identical hydroxytyrosol, a pure olive (Olea europaea) polyphenol.

Benefits

Antioxidant defense

Hydroxytyrosol is one of the most powerful natural antioxidants, protecting cells, blood vessels, and LDL cholesterol from oxidation.

Supported by Trial 1

Cardiovascular support

Olive polyphenols such as hydroxytyrosol are studied for supporting healthy blood-vessel function and cardiovascular markers.

Supported by Trial 1

Broad cellular protection

Through its antioxidant action, hydroxytyrosol is studied for protecting cells and tissues from oxidative stress, with emerging research into broader metabolic and cellular health.

Supported by Trial 1

Mechanism of action

1

Free-radical scavenging

Hydroxytyrosol's catechol structure makes it an exceptionally effective scavenger of free radicals, protecting cells and lipids.

2

Antioxidant-enzyme support

Hydroxytyrosol supports the body's own antioxidant defenses and healthy blood-vessel signaling.

Clinical trials

1
Hydroxytyrosol and Oxidative Stress — RCT
PubMed

Randomized, double-blind, placebo-controlled trial of hydroxytyrosol (15 mg/day for 16 weeks) vs. placebo in adults with overweight and prediabetes. (Moratilla-Rivera et al. 2025, Clinical Nutrition)

Adults with overweight and prediabetes.

Hydroxytyrosol significantly reduced oxidized LDL and improved several oxidative-stress and inflammatory biomarkers versus placebo, directly supporting hydroxytyrosol's antioxidant and cardiovascular-marker claims.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Mild digestive upset is occasionally reported.
Discontinue if any unusual reaction occurs.

Important Drug interactions

Blood pressure medication — olive polyphenols may have a mild additive effect; monitor.
Generally compatible with a healthy diet.
Tell your doctor if you take cardiovascular medication.

More Antioxidant Ingredients

Antioxidant
AstaZine® (Natural Astaxanthin from Haematococcus pluvialis — BGG)
AstaZine® is BGG's premium natural astaxanthin from Haematococcus pluvialis microalgae — d…
Antioxidant
Green Tea
Green tea extract, derived from Camellia sinensis leaves, is rich in antioxidants like cat…
Antioxidant
NAC (N-Acetylcysteine)
NAC (N-Acetyl Cysteine) is a supplemental form of the amino acid cysteine, best known for…
Antioxidant
Lutein
Lutein is a yellow carotenoid antioxidant that plays a key role in eye health, particularl…

Explore Other Ingredients

Energy
SalidroPure™ (Pure Salidroside)
SalidroPure™ is NNB Nutrition's precision-fermented pure salidroside — the primary bioacti…
Cognitive
Suntheanine®
Suntheanine® is a patented, 100% pure L-isomer theanine produced via an enzymatic process…
Cognitive
L-Theanine
L-Theanine, an amino acid primarily found in green tea (Camellia sinensis), is commonly su…

Frequently asked questions about HTEssence® (Hydroxytyrosol — Wacker)

What is HTEssence?

HTEssence® is a high-purity, nature-identical hydroxytyrosol from Wacker, the olive polyphenol with one of the highest antioxidant capacities of any natural compound. Hydroxytyrosol is studied for supporting cardiovascular health and protecting cells from oxidative stress.

What is HTEssence used for?

HTEssence is researched primarily for Antioxidant and Cardiovascular. Hydroxytyrosol is one of the most powerful natural antioxidants, protecting cells, blood vessels, and LDL cholesterol from oxidation.

What is the recommended dosage of HTEssence?

The clinically studied dose is Commonly 5 to 25 mg of hydroxytyrosol per day. Always follow the product label and check with a healthcare provider for personal advice.

Is HTEssence safe, and does it have side effects?

For most healthy adults, HTEssence is well tolerated at studied doses. Reported effects can include: Generally well-tolerated. Mild digestive upset is occasionally reported. It may also interact with some medications. HTEssence is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does HTEssence interact with any medications?

Possible interactions include: Blood pressure medication — olive polyphenols may have a mild additive effect; monitor. Generally compatible with a healthy diet. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for HTEssence?

NutraSmarts rates the evidence for HTEssence as Limited (2 out of 5). It is backed by 1 clinical trial and 2 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(2 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Moratilla-Rivera I, Pérez-Jiménez J, Ramos S, Portillo MP, Martín MÁ, Mateos R. Hydroxytyrosol supplementation improves antioxidant and anti-inflammatory status in individuals with overweight and prediabetes: a randomized, double-blind, placebo-controlled parallel trial. Clin Nutr. 2025;52:17-26. doi: 10.1016/j.clnu.2025.07.006.PubMedUsed to support: Hydroxytyrosol-specific RCT (15 mg/day) reducing oxidized LDL and improving oxidative-stress and inflammatory markers — the primary human evidence for HTEssence's antioxidant and cardiovascular claims.
  2. Stevens Y, Winkens B, Jonkers D, et al. The effect of olive leaf extract on cardiovascular health markers: a randomized placebo-controlled clinical trial. Eur J Nutr. 2021;60(4):2111-2120..PubMedUsed to support: RCT of olive leaf extract (a broader olive-polyphenol source) improving cardiovascular health markers; supporting context for olive polyphenols, of which hydroxytyrosol is a key member.