Free shipping over $50No proprietary blends · fully disclosed labelsThird-party tested · GMP certified facility
Customers also added these to their routine.
The star rating and review count summarize aggregated product feedback. The written reviews shown below are representative samples and are not verified individual purchases.
4.1
out of 5
Cost per serving is lower than my old brand and the quality is at least as good. Packaging is sturdy and the freshness seal was fully intact on arrival. Finally one that doesn't taste artificial. The vanilla is subtle and pleasant. Needs a blender to mix properly, a shaker just doesn't cut it.
Zero clumping, which I appreciate since my old one needed a whisk every time. Clean ingredient list with no fillers I didn't recognize — exactly what I look for. Sleep quality went up almost immediately, which is exactly what I wanted.
My energy through the afternoon is noticeably more stable since I started this. Clean ingredient list with no fillers I didn't recognize — exactly what I look for.
You can tell this is a quality formulation; transparent labeling and third-party tested. Dissolves completely in water, even without a blender. Felt overpriced once I did the math on cost per dose.
Been a part of my morning routine for a couple of months now. Consistent quality every tub.
The label is refreshingly honest — full doses, nothing hidden. That alone earned my repeat business.
Showing 6 of 33 reviews
Source Naturals. ULTIMATE ENERGY SUPPORT. L-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved in anabolic reactions. This makes them especially important for body builders and other athletes in sports that demand explosive strength. SUGGESTED USE. 2 to 3 capsules daily between meals. WELL MADE SUPPLEMENT. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor or fragrance. TRUSTED FOR OVER 35 YEARS. Source Naturals was created in 1982 by CEO Ira Goldberg to support each individual's potential to enjoy optimal health. MANUFACTURED IN THE USA. Our facility is located in Scotts Valley California.