9 Best Glycine Propionyl Capsules of December 2025

• CALMING SLEEP SUPPORT - Glycine is considered a semi-essential amino acid that is produced naturallyby the body and has a calming effect on the brain. Because of this, glycine promotes relaxation and soundsleep. We formulated our glycine with 1000 mg, a significantly higher dose than many traditional glycine supplements, to provide the maximum benefits.
• HEALTHY SLEEP FOR ALL - A good night’s sleep is one of the most effective ways to take care of ourselves. But hectic lifestyles, stress, and even exposure to blue light impacts our sleep habits. When taken before bed, glycine promotes healthy sleep, without causing daytime drowsiness.
• ADDITIONAL WHOLE BODY HEALTH BENEFITS - Glycine has been shown to impact mood, cognition and mental health positively. It is also needed for collagen production. But that’s not all: clinical trials suggest glycine may help support healthy glucose and fructose metabolism. In addition, it helps to preserve normal muscle mass and promotes healthy body composition.
• INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. This product is certified non-GMO and gluten-free. Manufactured in the USA and a Certificate of Analysis is available for every product we produce.
• LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach and that rigorous scientific research is the path to get us there. Or formulations are created using the exact ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy is achieved.

Life Extension

• With ongoing use, supports balanced cortisol levels and a healthy response to everyday stress.*
• Contains clinically studied ingredients including the adaptogen Sensoril brand ashwagandha and Suntheanine L-Theanine .*
• Promotes relaxation and calm to support restful sleep.* (Melatonin-free supplement)
• Your adrenal glands play a large role in regulating stress levels. Cortisol Manager helps to reduce stress and support adrenal health.*
• Certified vegan. Contains no gluten, dairy, or wheat.

Integrative Therapeutics

• Non-GMO, Gluten Free; Free Of Wheat, Yeast, Milk, Lactose, Soy, Artificial Color, Artificial Flavor
• Horbaach Glycine is an amino acid supplement that delivers 3000 mg of glycine per serving
• Glycine is a neurotransmitter that supports the body
• Support cognitive health and a positive mood now with glycine!*
• Our pure, quick-release glycine capsules are carefully packed in the USA

Horbäach

• PROMOTES RESTFUL SLEEP*/NEUROTRANSMITTER AND NERVOUS SYSTEM SUPPORT*: Glycine functions as a calming neurotransmitter in the brain, where it facilitates nerve impulses and is important for the maintenance of healthy sleep patterns.*
• Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
• VEGAN CAPSULES/PHARMACEUTICAL GRADE & FREE-FORM: Glycine is the smallest and simplest amino acid, making it versatile for use in a wide range of functions, and is necessary for the production of glutathione, DNA, creatine, bile, hemoglobin, and most proteins.*
• CERTIFICATIONS/CLASSIFICATIONS: Corn Free, Dairy Free, Egg Free, Made without Gluten, Non-GMO, Nut Free, Soy Free, Vegan/Vegetarian
• GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
• Packaged in the USA by a family owned and operated company since 1968
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

NOW

• PURE POWDER/PROMOTES RESTFUL SLEEP*: Glycine is also a precursor of creatine, which is used to construct DNA and RNA.*
• Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
• NERVOUS SYSTEM SUPPORT*/PHARMACEUTICAL GRADE: Supports glycogen storage, thereby making more glucose available for energy production.*
• CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Soy Free, Vegan
• GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
• Packaged in the USA by a family owned and operated company since 1968.
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

NOW

• ✅ BUY MORE = SAVE MORE! - Save 5% on orders using promotion code: BVYSUP05 when you buy 3 bottles or more. ✅ SAVE EVEN MORE and get 15% off with promo code BVYSUP15 when you buy 6 bottles or more. (Cannot be combined with any other offers)
• ✅BOOST BLOOD FLOW TO FEEL AND LOOK HEALTHIER: Revitalize your skin, organs, limbs, and mind by promoting healthy blood circulation. L-carnitine has shown to help keep your heart pumping at full capacity, keeping you looking and feeling refreshed, sharper, and younger. Healthy blood flow is key heart health, pain management, and brain function. If you feel like just don’t have “IT” anymore, better circulation could help you regain your old form.
• ✅ MORE EFFECTIVE THAN GENERIC L-CARNITINE: Our high absorption formula comes with concentrated levels of pure propionyl L-carnitine (PLCAR) instead of basic L-carnitine so all compounds can go DIRECTLY TO WORK on your blood flow. PLCAR has shown to be the fastest, most effective way to support blood circulation, and many people report they feel refreshed not long after switching.
• ✅PERFORM AT YOUR PEAK WITH JITTER-FREE ENERGY: Pro athletes know that better circulation is like nature’s pre-workout. That’s why they love L-carnitine. Propionyl L-carnitine optimizes blood flow, helping your body shuttle more energy to your heart, muscles, and brain NATURALLY. That means you can lift heavier, run further, and recover faster with NO DRAWBACKS. PLCAR is one of the best endurance supplements if you want clean, natural energy without the jitters or crash.
• ✅PROVEN SAFE AND EFFECTIVE (NO ARTIFICIAL FILLERS): VitaMonk is dedicated to optimizing our customer’s lives with 100% all-natural supplements. We prioritize purity and healthfulness. We only source only the highest quality propionyl-L-carnitine and never dilute it with synthetics or fillers to cut costs. Everything is formulated by our doctors, made in state-of-the-art facilities, and compliant with FDA/GMB standards.

Biovy

• NATURAL HEART SUPPORT: Swanson's fast-acting Propionyl L-Carnitine supplement is the form found most concentrated in heart tissue. Our formula supports cardiovascular health, cellular energy, and muscle strength with ingredients you can trust.
• OPTIMUM FORMULA: Delivering 515mg Propionyl-L-Carnitine and 150mg Glycine per capsule, our heart support supplement is formulated for high absorption. Enhance your cardio-health program with our natural and effective carnitine supplement!
• DOSAGE INSTRUCTIONS: Our wellness supplements offer everyday solutions for an enhanced mind and body using only the purest ingredients. Take one veggie capsule one to two times per day with water on an empty stomach. Do not take before bedtime.
• OUR QUALITY COMMITMENT: For nearly 50 years, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in our GMP certified facilities, and our purity and potency testing includes independent third-party labs.
• MONEY BACK GUARANTEE: At Swanson, we guarantee that every health product is made from the purest, freshest nutrients. If you aren't satisfied with any product(s) purchased within the last 30 days, return the unused portion to us for a full refund.

Swanson

• ✅ BUY MORE = SAVE MORE! - Save 5% on orders using promotion code: VTAMNK05 when you buy 3 bottles or more. ✅ SAVE EVEN MORE and get 15% off with promo code VTAMNK15 when you buy 6 bottles or more. (Cannot be combined with any other offers)
• ✅ NO ARTIFICIAL FILLERS - GlycoTrax is a premium version of Glycine Propionyl-L-Carnitine ( GPLC ) used to promote increased blood circulation, endurance, nitric oxide release, and heart health. This bottle gives you 60 capsules with NO artificial fillers whatsoever. Optimal, safe results.
• ✅ SUPPORT HEALTHY BLOOD FLOW - Ready to improve your circulation? Or maybe just improve your workouts? VitaMonk’s GlycoTrax has you covered. GPLC supports massively increased blood circulation for whatever your needs may be.
• ✅ SAFE & EFFECTIVE - At VitaMonk we have sourced extremely high quality GPLC and go to great lengths to make sure our supplements meet the highest safety standards. We follow strict FDA guidelines and GMP compliance standards for ultra-pure products.
• ✅ 100% MONEY BACK GUARANTEE - Try it now with no financial risk whatsoever. We guarantee your satisfaction or we'll give you your money back. It's that easy.

VitaMonk

• ✅ BUY MORE = SAVE MORE! - Save 5% on orders using promotion code: VTAMNK05 when you buy 3 bottles or more. ✅ SAVE EVEN MORE and get 15% off with promo code VTAMNK15 when you buy 6 bottles or more. (Cannot be combined with any other offers)
• ✅ EXTRA LARGE SERVING SIZE & NO ARTIFICIAL FILLERS - GlycoTrax is a premium version of Glycine Propionyl-L-Carnitine to promote increased blood circulation. This bottle gives you an extra large serving size of 120 capsules, and no artificial fillers whatsoever, for optimal, safe results.
• ✅ BLOOD FLOW SUPPORT - This powerful form of GPLC helps promote blood circulation and support blood flow throughout your entire body. This increased blood flow will help you in a number of areas of your life including athletic performance, heart health and more.
• ✅ SAFE & EFFECTIVE - At VitaMonk we have sourced extremely high quality GPLC and go to great lengths to make sure our supplements meet the highest safety standards. We follow strict FDA guidelines and GMP compliance standards for ultra-pure products.
• ✅ 100% MONEY BACK GUARANTEE - Try it now with no financial risk whatsoever. We guarantee your satisfaction or we'll give you your money back. It's that easy.

VitaMonk