Key points
In short: Astaxanthin is a red-orange carotenoid pigment produced by the microalga Haematococcus pluvialis, and it is what gives salmon, trout, shrimp and krill their colour. Unusually among carotenoids, it is active in both the fat-based and water-based parts of the cell. Research interest in it is genuine but still early: larger and longer trials are needed before conclusions can be drawn about most of the outcomes being studied. No health claims for astaxanthin are currently authorised in GB.
- What it is and where it comes from: a carotenoid pigment from microalgae, also present in the seafood that eats them.
- What makes it structurally unusual: its molecular structure lets it sit across both the fat-soluble and water-soluble regions of a cell membrane, unlike most carotenoids which occupy one or the other.
- The regulatory position: botanical and carotenoid claims of this kind are not authorised in GB, so anything you read asserting a specific health outcome for astaxanthin sits outside that framework.
- Where the research is active: skin, eye, muscle, cardiovascular and cognitive outcomes are all under investigation, with a 2022 review in Molecules summarising the current picture. The evidence base is developing rather than settled.
- Typical supplement dose: Metabolics offers two options, both providing 4mg per capsule.
- Softgel versus capsule: the softgel has an oil base with added vitamin E, which suits a fat-soluble nutrient. The capsule is a simpler formulation without additional ingredients. Both are vegan-friendly.
- How to take it: with a meal containing fat, such as avocado, olive oil or nuts, since absorption of fat-soluble compounds improves alongside dietary fat.
- Vitamin E, where present: contributes to the protection of cells from oxidative stress.
We all want to stay active, vibrant, and confident as we age and nature has some incredible tools to help us along the way. One standout is astaxanthin, a powerful antioxidant found naturally in microalgae, often called the “king of carotenoids” for its wide-ranging benefits.
Why is astaxanthin getting so much attention?
Astaxanthin helps protect our bodies from oxidative stress, the everyday wear and tear on our cells that can lead to ageing, wrinkles, and lower energy levels. Unlike many antioxidants, astaxanthin works in both fat- and water-based parts of the body, giving it the ability to shield cells from damage more effectively.
In fact, a review published in the journal Molecules (2022) highlighted astaxanthin’s impressive potential to protect brain cells, support heart health, maintain muscle strength, and promote youthful skin, all key pillars of healthy ageing.
What does the research suggest?
Brain Health
Studies suggest astaxanthin can cross the blood–brain barrier and help protect brain cells from oxidative damage, supporting memory and cognitive function as we age.
Heart Health
Research indicates it may support healthy cholesterol levels and reduce inflammation in blood vessels, helping to lower the risk of cardiovascular problems.
Muscle Strength & Endurance
Astaxanthin supplementation has been linked to improved endurance, reduced muscle fatigue, and protection against age-related muscle loss (sarcopenia).
Skin & Eye Health
Studies show astaxanthin helps protect the skin from UV damage, supports elasticity, reduces the appearance of fine lines, and may slow age-related changes in vision.
Cellular Health
By supporting mitochondrial function- the “energy factories” of your cells-astaxanthin may help maintain vitality and promote longevity.
Reservations
While early research is very promising, larger and longer-term studies are still needed to fully confirm all of astaxanthin’s benefits.
Choosing the right astaxanthin for you
Metabolics offers two astaxanthin options, both delivering 4 mg of astaxanthin per capsule.
The Astaxanthin Softgels are ideal for those seeking potentially enhanced absorption, thanks to their oil base and added antioxidant vitamins such as vitamin E.
In contrast, the Astaxanthin Capsules provide a straightforward formulation without additional ingredients, suitable for those who prefer a simpler supplement profile. Both products are vegan-friendly.
Astaxanthin Top tip
Astaxanthin is best taken with a meal. Including healthy fats, such as avocado, olive oil, or nuts, may help support optimal absorption.
Taking small steps today, like adding targeted antioxidants to your routine, can help you feel better, stay stronger, and keep your skin glowing tomorrow.
