See it in action
Short films from the people who make it, and real posts from the people who take it.
The research behind it
The active compound here is fucoidan, a sulfated polysaccharide found in brown seaweed, and it carries an unusual amount of published attention for an ingredient sold this way.
More than 3,700 indexed papers
A search of PubMed, the US National Library of Medicine's index of biomedical literature, returned 3,734 papers referencing fucoidan when we checked on 15 September 2026. Two things to be precise about. Most are preclinical, meaning laboratory and animal work rather than human trials, which is normal for a compound at this stage. And a paper referencing a compound is not a paper endorsing it: the count includes reviews, methods work and studies that found nothing.
Why brown seaweed
Fucoidan concentration varies widely by species and by how the seaweed is processed. The LIMU line uses a 5X fucoidan concentration from Undaria pinnatifida, which is the species most of the published work is based on.
Traditional use
Seaweed has been a dietary staple in coastal Japan, Korea and Polynesia for centuries. Long dietary history is not evidence of efficacy, but it is the reason researchers started looking.
Preclinical research describes biological activity observed in a laboratory. It does not establish that a food or supplement produces a specific result in people.
Questions people actually ask
LIMU Lean Burn, answered straight
How much should I take?
One 12 fl oz can, used as a snack replacement between meals. Each can carries 120 mg of natural caffeine from coffee bean, about the same as an 8 oz cup of coffee. This is the serving size on Partner.Co's own fact sheet for this product, not our interpretation of it.
Compare every product's dosageWhat is actually in it?
Hydrolyzed Collagen Protein – 20 g, LIMU Seaweed Blend™ (Fucoidan-rich, organic, non-GMO) – 25 g, Soluble Fiber – 7 g, Natural Caffeine (from guarana seeds) – 120 mg, Weight Loss Blend (Proprietary): L-Theanine, Green Tea Extract, Natural Caffeine, Conjugated Linoleic Acid, Resveratrol, Sweeteners: Pure Cane Sugar & Stevia. Where an amount per serving is shown, it is taken from the product's Supplement Facts panel.
Where does this ship from, and who am I buying from?
The Perfect Nutrition is an independently owned marketplace and an authorized Partner.Co distribution partner. We are not Partner.Co and we do not manufacture anything. Products ship as the genuine, unaltered article through Partner.Co's fulfilment network.
How this relationship worksCan I return it if it does not suit me?
Most products carry a 30-day money-back guarantee, and Slenderiiz Day & Night Drops carry 45 days. Keep the original packaging and the batch number where you can, since both are needed to process a return. Return shipping is the customer's responsibility.
Full returns policyShould I check with a doctor first?
If you are pregnant or nursing, taking prescription medication, managing an existing condition, or buying for someone under 18, yes. We are a retailer. We can tell you what is in a product and what the label says, and we are not in a position to tell you it is appropriate for you.
Individual results may vary. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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