Diet Pills and Weight Loss Products: Efficacy and Side Effects

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Optifast Vs. Slimfast

Published Jul,18 2017 | By Elizabeth Nickelaid

Optifast and Slim-Fast are meal-replacement weight loss plans, substituting their products for at least two meals a day. Both programs offer shakes and bars, and Optifast adds soups to the menu. One major difference between the two is how they are administered.