Think Sharp

30 Day Supply | 60 Capsules
$54.95 (Incl Tax)

A natural supplement designed to provide essential nutrients to support healthy brain function:

  • Supports mental clarity, focus and brain health.
  • Support for mental alertness and clarity.
  • Targeted nutrition for brain cells

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Key Benefits

Backed by Science

Brain Protection

Superior Quality

Think Sharp is formulated with natural herbal extracts such as sage, and bacopa which have a long history of use to support brain health. It also includes antioxidants from Red Grape Skin and Organic Sea Buckthorn to help protect the brain from free radical damage.

Key Benefits:

  • Supports brain health in aging.
  • Supports mental clarity, brain function, and sustained focus as you age.
  • Supports mental clarity.
  • Supports mental alertness and clarity.

Key Ingredients:

  • Sage: Traditionally utilized to support brain health, mental clarity, and focus.
  • Bacopa: A centuries-old remedy in traditional practice, it supports healthy brain function including mental clarity and focus.
  • Phosphatidyl L-Serine: Derived from sunflower, this supports brain health for the ageing brain. It supports brain functions such as mental clarity and focus.
  • Huperzine A: Derived from moss and known for centuries for its various health benefits, it specifically supports mental clarity and function.
  • CyanthOx™ Organic Sea Buckthorn: Sourced from sea buckthorn, a resilient plant grown in the Tibetan Plateau, this proanthocyanidin extract serves as an antioxidant.
  • Essential B Vitamins: Think Sharp includes B6 and B12 vitamins, along with Folate, which support healthy brain aging.

Always read the label and use as directed. If symptoms persist see your healthcare professional. Xtendlife, Christchurch.


Supplement Facts

Serving size: 2 Capsules
Servings per container: 30
Amount Per Serving   % DV*
Vitamin B6
(as Pyridoxal-5-Phosphate)
1.7 mg 100%
(as Calcium 5MTHF)

500 DFE
300 mcg Folic Acid

Vitamin B12
(as Cobamamide)
2.4 mcg 100%
Sage Extract
167 mg **
CyanthOxTM30 Sea Buckthorn Fruit Extract 150 mg **
Bacopa Leaf Extract 120 mg **
Phosphatidyl L-Serine
(from Sunflower)
75 mg **
Red Grape Skin Extract 
50 mg **
Huperzine A
(from Toothed Clubmoss Leaf & Stem)
150 mcg **

Other ingredients:Microcrystalline Cellulose, Maltdextrin Capsule (Hydroxypropylmethyl Cellulose, Water).

If you are pregnant, lactating or taking any medications, please consult your health practitioner before starting new supplements.


Servings per bottle: 30
Daily serving: 2 capsules per day. 

Take 2 capsules per day with or without food. 

Combines well with our Total Balance and Omega 3 products.

Consult your health practitioner if you are taking medications for dementia or Alzheimer's disease.

If you are pregnant, lactating or taking any medications, please consult your health practitioner before starting new supplements.

If you have any questions, please contact us at

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How long will it take to work?

We're using an ingredient called Sibelius™:Sage, which starts to work within one hour of taking the supplement, so people should really feel an almost immediate boost to their thinking. The other ingredients are really designed to build up and provide cumulative benefits over a longer time frame so say within one month. Individual results may vary.

When should I take the product?

Take two capsules per day, either with or without food. We strongly recommend taking it during the day rather than just before going to sleep because the Sibelius™:Sage extract does kick in within the first hour. Most people want to be feeling sharp, good and on form during the day and rest their brain at night.

This product shares many benefits with omega-3 fish oil. Which should I be taking?

We suggest you take both because they complement and reinforce each other because they work in slightly different ways.

We highly recommend everyone take DHA and our Xtendlife fish oil blends have a high content of it. There are some really good long-term studies showing that supplementation with DHA is protective against the development of dementia, but we haven't seen any studies published showing that taking DHA or any fish oil has an immediate and short-term effect on the sharpness of thinking.

Why are the doses of sage in Think Sharp lower than those in some of the clinical trials?

Levels of Sibelius™:Sage in some trials are 333 mg and Think Sharp has 167mg; there are two reasons for this.

Firstly, Sibelius™:Sage and huperzine work by the same mechanism (they boost the levels of acetylcholine in the brain and body), so if we used both, the higher levels of Sage could end up doubling the impact and have potential side effects.

Secondly, a 167 milligrams daily dose of Sibelius™:Sage has still been clinically proven to improve working memory, speed of processing, memory recall and a number of other memory domains.

Is it safe to take sage long-term?

Yes, the only issue is Thujones which are present in Sibelius Sage. The upper limit for daily consumption of Thujones is 6mg per day. Sibelius™:Sage contains thujones at a very low level (not more than 0.1%). A daily dose of 167mg Sibelius™:Sage that's in Think Sharp would deliver 0.167mg thujones, which is well below the upper daily limit for this substance.

Can I give Think Sharp to children or pets?

Not suitable for those under 18 years of age. Not suitable for pets.

Does this product contain any allergens?

No, it doesn't contain any allergens.

Is Think Sharp suitable for vegans or vegetarians?

Yes, Think Sharp is suitable for both vegans and vegetarians.

Will this supplement interfere with prescription medications?

All supplements should be taken 2-3 hours away from prescription medication. We recommend checking with your doctor before beginning any supplement.

Can I take other Xtendlife supplements alongside Think Sharp?

Yes, you can. All our products are formulated to work synergistically with each other.

Can I take Think Sharp if I am pregnant or breastfeeding?

No, we do not recommend this. The only product we recommend during this time is our Omega 3 / DHA fish oil, which has valuable properties to support both the health of the mother and baby. 
Fish oil is highly recommended by many medical professionals during pregnancy and breastfeeding to help support infant brain development, as well as systemic organ growth. It can also play a valuable role in supporting the post-natal mood and brain function of the mother. As the baby draws from the mother's precious stores of DHA, they can easily become depleted, therefore supporting levels with a supplement such as Omega 3 / DHA fish oil is very wise.