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: Before starting, you must speak with a doctor or dietitian to ensure the Very Low Calorie Diet (VLCD) is safe for you.

Retailers vary by country, with some requiring a clinic membership for specific high-intensity products like Optifast 900. Buying OPTIFAST VLCD |FAQ buy optifast online

: Ensure you are buying the correct variant (e.g., shakes, bars, soups, or desserts) for your specific program level. Where to Buy Online : Before starting, you must speak with a

: Optifast availability and product names vary. In Australia, look for "Optifast VLCD," while in the US and UK, the equivalent is often "Optifast 800". : Before starting