Old School Labrador Pet Supplement Line
OSL Muscle Treats

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Pre-Workout
5211 reviews
Unlike other pre-workouts, its unique two-stage formula delivers steady energy and hydration. This means no crashing, no dependency, just more strength and endurance from start to finish.
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Creatine Monohydrate
173 reviews
This natural amino acid reliably increases muscle size, strength and stamina. What’s more, each serving contains BioFit™ probiotic - which helps gut flora and aids quicker ingredient absorption.
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Protein Blend
963 reviews
A blend of three protein sources: eggs, milk (casein + whey) and beef. It provides a powerful muscle-building effect and keeps you feeling full without the extra fat, sugar, or cholesterol.
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Fat Burner
4598 reviews
A highly effective thermogenic fat burner that helps speed up the body’s metabolism and convert stored fat into energy without wasting muscle.
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Post Workout
2108 reviews
Contains an effective mixture of three essential muscle building ingredients: BCAAs, Creatine Monohydrate, and L-Glutamine to help stimulate and retain your muscle mass.
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Pre-Workout + Protein + Fat Burner
36 reviews
This stack includes our two-stage pre-workout, muscle-building protein blend, and muscle-preserving fat burner. You’ll have more energy to work out harder, with quality protein to keep your muscles fed, all while burning fat, and only fat.