{"id":19365,"date":"2026-10-10T05:08:55","date_gmt":"2026-10-09T21:08:55","guid":{"rendered":"https:\/\/www.gofitorganic.com\/singapore\/fat-blocker-supplements\/"},"modified":"2026-10-10T05:08:55","modified_gmt":"2026-10-09T21:08:55","slug":"fat-blocker-supplements","status":"publish","type":"post","link":"https:\/\/www.gofitorganic.com\/singapore\/fat-blocker-supplements\/","title":{"rendered":"Fat Blockers: How They Work, Side Effects and What to Expect (Singapore 2026)"},"content":{"rendered":"
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Short answer:<\/strong> A fat blocker is a supplement or medicine taken with a meal to reduce how much of that meal\u2019s fat your body absorbs. Supplements usually rely on a fibre such as chitosan, which binds some dietary fat in the gut, while the prescription medicine type blocks the enzyme that digests fat and is only used under a doctor\u2019s care. Either way the effect is modest, it applies only to the meal it is taken with, and the common side effects are digestive. Chitosan is made from crustacean shells, so it is not for anyone allergic to shellfish. In Singapore we sell ZENSO Kuro Oiru, a rose-milk chewable taken before lunch and dinner: see Kuro Oiru on our Singapore store<\/a>.<\/p>\n<\/div>\n

Fat blockers are sold everywhere in Singapore, from pharmacy shelves to marketplace listings. Here is what the category is, how the ingredients work and what side effects to expect.<\/p>\n

See also: ZENSO review Singapore: how the sets compare<\/a>.<\/em><\/p>\n

What is a fat blocker?<\/h2>\n

\u201cFat blocker\u201d covers two different things. The first is a prescription medicine<\/strong> that stops lipase, the enzyme that breaks down dietary fat, so part of the fat in a meal passes through undigested. That is a medicine your doctor decides on and monitors; we do not sell medicines.<\/p>\n

The second is a fat-blocker supplement<\/strong>: tablets or chewables, usually built around a fibre that binds some fat, often with other ingredients aimed at how the body uses and stores fat. These are foods, not medicines, and they are the subject of the rest of this guide.<\/p>\n

How do fat blockers work?<\/h2>\n

The best-known binder is chitosan<\/strong>, a fibre made from the shells of crustaceans such as shrimp and crab. In the gut it can attach to some of the fat from a meal, so less of that fat is taken in. It only works on food eaten at about the same time, so fat blockers are taken shortly before meals.<\/p>\n

Most modern formulas add ingredients that act on what happens after you eat rather than on absorption:<\/p>\n