Frequently Asked Questions

What is OsoLean powder?

Mannatech’s OsoLean powder is an all-natural protein blend that in a clinical study targeted fat loss while sparing lean muscle, when combined with a reduced-calorie diet such as the OsoLean Plan and proper exercise.*

What ingredients are in OsoLean powder?

The OsoLean powder is a specially formulated whey protein blend that includes an advanced protein peptide technology, which helps the body burn fat while maintaining lean muscle.*

What is the Mannatein™ Blend?

The Mannatein™ blend is the proprietary name for our partially hydrolyzed whey protein isolate and whey mineral complex.  The OsoLean powder is comprised of this blend and soy lecithin.

I have had weight-reduction surgery. Can I use OsoLean powder?

Weight-reduction surgery is always very serious. Any changes to diet or exercise, especially those recommended with use of OsoLean powder, should be discussed with your personal healthcare professional who is most familiar with your medical history and current lifestyle program.

What does OsoLean powder taste like?

Our OsoLean powder tastes similar to dairy products such as skim milk.

How many calories does 1 serving of OsoLean powder contain?

One serving of OsoLean powder contains 45 calories.

How many grams of fat does 1 serving of OsoLean powder contain?

Mannatech’s OsoLean powder is considered fat-free as it contains less than 0.5 grams of fat per serving.

How do I use OsoLean powder?

Mix 1 serving (2 scoops) in 8 fluid ounces of liquid or add to food twice daily. For best results, take OsoLean powder with 8 fluid ounces of liquid 20 minutes before breakfast and 20 minutes before dinner. OsoLean powder can be mixed directly into beverages and sprinkled into foods.

What can I mix OsoLean powder in?

The OsoLean powder mixes well with virtually anything. It goes well with beverages such as coffee, milk, meal replacement drinks and fruit juice—even plain water. Our OsoLean powder also mixes well with cereal, yogurt and soups.

Can I add OsoLean powder to the GlycoSlim drinks?

Yes!

Can I use OsoLean powder in food?

Yes! Mannatech’s OsoLean powder blends perfectly with countless foods right before serving. However, for best results we suggest following the recommended directions for use—with 8 fluid ounces of liquid 20 minutes before breakfast and 20 minutes before dinner.

How is OsoLean powder different from ordinary whey protein?

Most whey protein is simply that—whey. In developing OsoLean powder, Mannatech secured a proprietary process where specific parts of whey protein, called peptides, are separated and concentrated to ensure the optimal level of fat-loss peptides.* Mannatech’s OsoLean powder also contains sialic acid, a sugar found in glycoproteins.

Is the soy lecithin in OsoLean powder non-GMO?

The OsoLean powder is made with non-genetically modified (or non-GMO) soy lecithin.

How much protein is in OsoLean powder?

Each serving (2 scoops) of OsoLean powder contains 10 grams of protein.

Does OsoLean powder contain gluten?

Mannatech’s OsoLean powder is gluten-free.

I am allergic to casein. Can I use OsoLean powder?

Mannatech’s OsoLean powder is a whey protein supplement, but it may contain trace amounts of casein. Testing for the presence of casein has not been performed. Anyone with allergies to casein should discuss use of this product with their personal healthcare professional.

I am lactose intolerant. Can I take OsoLean powder?

There is a small amount of lactose in OsoLean powder, but it is significantly less than what is found in an eight-ounce glass of milk. Since the effects of lactose intolerance vary with each person, consult your healthcare practitioner with any concerns regarding OsoLean powder.

Can OsoLean powder be used during pregnancy?

The OsoLean powder is designed for use by adults who want to lose fat and spare lean muscle, when used in conjunction with a reduced-calorie diet and proper exercise.* Due to the high nutritional demands of pregnancy, expectant mothers who wish to use OsoLean powder should discuss its use and the accompanying lifestyle changes with their personal healthcare professional to determine if it is appropriate for them.

Can OsoLean powder be used by nursing mothers?

Our OsoLean powder is designed for use by adults who want to lose fat and spare lean muscle, when used in conjunction with a reduced-calorie diet and proper exercise.* Due to the high nutritional demands of breastfeeding, nursing mothers who wish to use OsoLean powder should discuss its use and the accompanying lifestyle changes with their personal healthcare professional to determine if it is appropriate for them.

Can children use OsoLean powder?

Mannatech’s OsoLean powder was not developed for use by children. If a parent would like for his/her child to use this product, use of OsoLean powder and the accompanying lifestyle changes of calorie reduction and proper exercise should be discussed with the child’s healthcare professional.