Although many common protein supplements are derived from animal products, some are vegan. If you prefer vegan supplements, look for options that include protein sources like: Hemp: In addition to protein, hemp powder provides additional fiber and minerals like zinc. Pea: Supplements made from yellow split peas can provide an efficient source of branched-chain amino acids, which prompt your body to produce muscle protein. Soy: As one of the few complete plant-based proteins, soy supplements are ideal for vegans. Rice: Brown rice protein is designed to boost muscle growth, especially after weight training sessions. Pumpkin Seed: These seed-based supplements provide high levels of protein as well as minerals like magnesium and iron.