Also known as: Perna canaliculus, GLM, Lyprinol, New Zealand mussel extract
Joint & ConnectiveGood evidence
A shellfish extract from New Zealand with an unusual fatty acid profile and reasonable evidence for joint comfort. Processing method decides whether a product retains what matters.
Typical dose
200.0–1200.0 mg per day
Daily with food; allow 8-12 weeks
What it is
Green-lipped mussel is Perna canaliculus, farmed along the New Zealand coast. Interest in it began with observations about the joint health of coastal Māori communities with high shellfish consumption.
The extract supplies omega-3 fatty acids in an unusual profile, including eicosatetraenoic acid, alongside glycosaminoglycans and various lipid fractions.
Processing is decisive. The active lipids degrade with heat and oxidation, so freeze-dried or stabilised preparations retain considerably more than cheaper heat-dried powders. A stabilisation method should be stated on the label.
How it works
The omega-3 fatty acids act on inflammatory signalling in a broader way than fish oil, with laboratory work suggesting effects on both of the main enzyme pathways involved rather than just one.
Eicosatetraenoic acid is the distinctive component, and it is not present in meaningful amounts in fish oil.
The glycosaminoglycan content overlaps with what chondroitin supplies, though the amounts in a typical dose are small compared with a dedicated chondroitin supplement.
What the evidence shows
Controlled trials in adults with joint discomfort have reported improvements in comfort, stiffness and physical function over several weeks to months.
Some trials have reported effects comparable to or better than fish oil at equivalent omega-3 doses, which supports the idea that the distinctive fatty acid profile contributes something.
Trials are modest in size and several are industry-linked, and results vary between preparations, which fits the processing sensitivity. Within the joint category it sits among the better-supported options.
Dosing
Lipid extracts are used at 200 to 400 mg daily; whole freeze-dried powder at 1,000 to 1,200 mg. Those figures are not interchangeable, so check which you have.
Take with food, since the active components are lipids and absorb better alongside fat.
Allow eight to twelve weeks. Effects in trials accrued over that period rather than appearing quickly. Look for a stated stabilisation or freeze-drying method, since heat-processed powder may supply very little of what the research used.
Green-lipped mussel is generally well tolerated, with digestive upset and nausea the most commonly reported effects.
Shellfish allergen declaration is mandatory. Anyone with a shellfish allergy must avoid it entirely, and it is not suitable for vegetarians or vegans.
As with any omega-3 source, high intakes may affect how readily blood clots. Speak to your doctor before use if you take anything affecting clotting, and stop before scheduled surgery.
Who should avoid it
Shellfish allergen declaration applies; avoid entirely with a shellfish allergy. Not suitable for vegetarians or vegans. Speak to your doctor before use if you take anything affecting blood clotting or any regular medication. Stop before scheduled surgery. Not established in pregnancy or breastfeeding.
This entry is provided for information only. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Consult a qualified healthcare professional before use if you are pregnant, breastfeeding, taking medication or under medical supervision.
