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Essential Amino Acid Supplement

$ 19.95

All 9 essential amino acids in free-form capsules, the foundational building blocks your body cannot produce on its own, designed to support muscle recovery, exercise routines, and daily performance.*
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Description

Essential amino acids are the nine amino acids the human body requires but cannot synthesize on its own. They must come from food or supplementation. While BCAAs (leucine, isoleucine, and valine) get most of the attention in the performance category, the full picture of muscle maintenance, recovery, and protein metabolism depends on all nine EAAs working together.*

Double Wood's Essential Amino Acids formula delivers all nine in free form, meaning they are readily available for use without the digestion step required for whole proteins or larger peptides. This makes them a practical and efficient option for use around training, whether before, during, or after exercise.*

Each bottle contains 225 capsules, providing 75 servings at the standard 3-capsule daily serving. Take on an empty stomach, with room to take additional servings around training up to the labeled maximum of 12 capsules per day, giving flexibility across different training volumes and body weights. If sensitive, take with water and/or a small amount of food.

Every batch tested. Third-party tests by ISO/IEC 17025 accredited labs. COAs published openly. For a more complete performance and recovery regimen, EAAs pair naturally with Creatine to support energy availability during training, or with Collagen to support broader connective tissue and joint function in an active lifestyle.*

All 9 EAAs in one capsule. Soy-Free, Gluten-Free, Non-GMO.

Benefits
  • All 9 essential amino acids in free form, directly available without the digestion step required for whole proteins or larger peptides*
  • Supports muscle recovery, lean tissue maintenance, and exercise routines as part of a consistent daily performance regimen*
  • 225 capsules per bottle, 75 servings at 3 capsules daily on an empty stomach, with flexibility up to 12 capsules per day for higher training volumes
  • No fillers, artificial flavors, or unnecessary additives. Gluten-Free, Non-GMO, manufactured in the USA
  • Every batch tested. Third-party tests by ISO/IEC 17025 accredited labs. COAs published openly.

Directions & Dosage

Take 3 capsules daily on an empty stomach as a baseline serving. Those training hard or with higher protein needs may take additional servings around exercise. If sensitive, take with water and/or a small amount of food. Do not exceed 12 capsules in one day.

The Science Behind All 9 Essential Amino Acids (Free Form), Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, Valine

Why all nine matter together. The three BCAAs (leucine, isoleucine, valine) are well known for their role in muscle protein synthesis signaling, particularly leucine's relationship to the mTOR pathway. But muscle protein synthesis requires all nine essential amino acids to proceed completely. A study by Wolfe (2017) published in the Journal of the International Society of Sports Nutrition found that EAA supplementation, not just BCAAs alone, has been associated with a more complete stimulus for muscle protein synthesis and recovery. This is the foundational rationale for choosing a full EAA formula over a BCAA-only product.*

Free form absorption and timing. Free form amino acids are absorbed more rapidly than amino acids from whole proteins, which require enzymatic digestion before absorption can begin. Research on the timing of EAA supplementation around exercise by Tipton et al. (2001) published in the American Journal of Physiology found that amino acid availability around the workout window has been studied for its role in supporting muscle protein synthesis rates. Double Wood's free form capsules provide amino acids in a format that is practical and portable for pre, intra, or post-workout use.*

EAAs versus BCAAs and protein powders. EAA supplements occupy a distinct position in the performance nutrition category. BCAAs provide only three of the nine essential amino acids, which limits their completeness for muscle protein synthesis. Whole protein powders provide all nine but require digestion time before amino acids are available. Free form EAA capsules provide all nine amino acids with rapid availability, no mixing required, and no digestive lag.*

View Latest Test Results

Third-party tested for quality and purity

This production lot was tested for essential amino acid content, heavy metals, and microbial quality.

Test Claim or Limit Result
Potency
L-Leucine NLT 205 mg/serving 217 mg/serving
L-Lysine NLT 185 mg/serving 196 mg/serving
L-Valine NLT 141 mg/serving 150 mg/serving
L-Threonine NLT 141 mg/serving 150 mg/serving
L-Isoleucine NLT 115 mg/serving 122 mg/serving
L-Phenylalanine NLT 72 mg/serving 76 mg/serving
L-Tryptophan NLT 37 mg/serving 39 mg/serving
L-Histidine NLT 37 mg/serving 38 mg/serving
L-Methionine NLT 35 mg/serving 38 mg/serving
Heavy Metals
Cadmium (≤4.1 ug/day) ≤3.6 ppm <0.022 ppm
Lead (≤0.5 ug/day) ≤0.4 ppm <0.025 ppm
Total Mercury (≤0.3 ug/day) ≤0.3 ppm <0.005 ppm
Arsenic (≤10 ug/day) ≤8.8 ppm 0.128 ppm
Microbial Testing
Total Aerobic Count ≤10000 cfu/g <1000 cfu/g
Yeast & Mold ≤1000 cfu/g <1000 cfu/g
Coliform ≤100 cfu/g < 100 cfu/g
E. Coli Absent Absent
Staphylococcus Aureus Absent Absent

Lot: AIKBBManufactured: 11/2025

Lab: Canyonside Labs - Twin Falls ID

View Certificate of Analysis (PDF)

See the original Certificate of Analysis for complete testing details, methods, and laboratory documentation.
View Certificate of Analysis View Third Party Test Results
Identity, potency, and contaminants verified per batch Identity, potency, and contaminants verified per batch
Manufactured in an FDA-registered cGMP facility Manufactured in an FDA-registered cGMP facility
Manufactured in the USA from Globally Sourced Materials Manufactured in the USA from Globally Sourced Materials

Benefits

  • Provides All Essential Amino Acids: This supplement provides all 9 of the essential amino acids that the body cannot create itself and must obtain from dietary sources.
  • Required for Countless Bodily Functions: The nine essential amino acids are required for many bodily processes such as building proteins and synthesizing hormones and neurotransmitters.
Benefits

All 9 Essential Amino Acids (Free Form), Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, Valine

Essential amino acids are the nine amino acids required for human health that the body cannot synthesize on its own. They must be obtained through diet or supplementation. Double Wood's formula delivers all nine in free form, providing direct availability for protein synthesis, muscle maintenance, and metabolic processes.*

The free form delivery means no digestion is required before the amino acids can be absorbed and utilized, making them efficient for use around exercise windows. Each serving provides a complete EAA profile at flexible dosing to support different body weights and training demands.*

All 9 Essential Amino Acids (Free Form), Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, Valine

What Customers Are Saying

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"Reputation of product and overall delivery and ordering experience has always been a good experience."

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"Always fast shipping and great selection no matter what you’re looking for."

Aaron B.

"Double Wood is always my go-to for supplements. Great, effective, clean products and always at a reasonable price."

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Supplement Facts

Pairs well with

Powerful alone, stronger together. Essential Amino Acid Supplement delivers targeted support on its own, but combining it with complementary ingredients can help create a more holistic and balanced approach to wellness.

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Frequently Asked Questions

What makes a full EAA formula more effective than BCAAs alone?

BCAAs provide only 3 of the 9 essential amino acids, important for signaling muscle protein synthesis, particularly through leucine's relationship to mTOR activity. Completing the muscle protein synthesis process requires all nine essential amino acids. Research suggests EAA supplementation supports muscle protein synthesis more completely than BCAAs alone, because the body needs the full amino acid profile to build and maintain muscle tissue, not just the three branched-chain ones.*

When is the best time to take EAA capsules and why?

Take the baseline 3-capsule serving on an empty stomach. Before, during, or after exercise are all effective timing windows for additional servings, since the key is having essential amino acids available while the body is most actively carrying out protein synthesis, which is heightened during and after training.* On non-training days, the baseline serving can still be taken to support daily protein maintenance goals.

How are free form amino acids different from amino acids in protein powder?

Protein powders contain amino acids bound in peptide chains that require enzymatic digestion before the individual amino acids can be absorbed. This introduces a time lag between consumption and amino acid availability. Free form amino acids skip this digestion step and can be taken up directly, making them faster to reach circulation for use in muscle protein synthesis.*

How many capsules should I take and how do I adjust for my body weight?

The standard serving is 3 capsules daily on an empty stomach. Those training hard or with higher protein needs may take additional servings around exercise, up to the labeled maximum of 12 capsules per day. Overall dietary protein intake matters too, if you consume adequate protein from food across the day, the baseline serving is often enough; if total daily protein is lower, additional servings around training can help close the gap.

What supplements pair well with EAAs?

Creatine is a well-suited performance pairing. EAAs supply the amino acid building blocks for muscle maintenance and recovery, while Creatine supports phosphocreatine replenishment and energy availability during high-intensity activity. Together they address the protein and energy dimensions of training support from a single pre or post-workout routine. Collagen is a second well-suited pairing for those focused on connective tissue wellness alongside muscle recovery, supporting joint and tendon function in an active lifestyle.*

Is Double Wood EAA a complete protein source?

EAAs contain all nine essential amino acids but do not contain all twenty amino acids found in a complete protein food. They provide the nine amino acids the body cannot synthesize, which is the most critical group for muscle protein synthesis and recovery. For overall protein nutrition, EAAs are best used as a targeted supplement alongside a diet that includes adequate whole protein sources, rather than as a sole protein replacement.

Is Double Wood Essential Amino Acids tested and where can I see the results?

Every batch tested. Third-party tests by ISO/IEC 17025 accredited labs. COAs published openly. Double Wood manufactures in a cGMP-certified facility using globally sourced ingredients tested domestically.

Overall rating: 4.769231 / 5 from 52 reviews.

AI Generated Review Summary

Summary topics

Review topics: [quality, price, supplement, sleep, wood, order].

Review highlights

Reviews

I have read that vitamins alone are not sufficient as a person ages.

"I will be 90 in August. Can you tell me how many doses of Essential Amioo Acid I should take if I work out daily for ~1 hour."

— george c. (5/5)

Order was accurate, and came

"Order was accurate, and came quickly."

— Betty C. (5/5)

Helps me lose manage weight

"Helps me lose manage weight . And I can feel the difference. When I work out"

— Steve S. (5/5)

Great

"Love it"

— Dallas W. (5/5)

Possible fountain of youth?

"Possible fountain of youth? Over all positive effect on my health. Big surprise was watching my grey/while hair and mustache turning grey with dark streaks through out. Helped with every ailment. From allergies to mental focus."

— david t. (5/5)

Affordable and Effective

"I researched various EAA products and decided on Double Wood because of the quality and affordability. As a senior, I have been quite pleased and will order again!!!!"

— Terri T. (5/5)

Every morning

"3 to start my day"

— Ted P. (5/5)

"Excellent fast acting supplement. High quality and reasonable priced, highly recommend."

— Vincent (5/5)

"Great product"

— syidale (5/5)

"Excellent product to assist in meeting daily protein requirements."

— Khadijah (5/5)

Q&A

Do the Essential Amino Acids product have an expiration date? I asked because I bought 2 bottles, and I finished one already but when checked the second bottle at the bottom is has an EXP:01/25
Thank you for reaching out with your question! For faster assistance with product-related inquiries, we recommend contacting our customer service team directly at hello@doublewoodsupplements.com. Our team will be happy to provide the information or support you need.
HOW MANY GRAMS OF PROTEIN PER SERVING?
Our Essential Amino Acids are not tested for protein content. The percentage of protein in one gram of amino acid depends on the specific amino acid because amino acids are the building blocks of proteins, and different amino acids have different molecular weights and compositions. However, if we consider the essential amino acids (EAAs) as a group, the percentage of protein in one gram of EAAs would be approximately 100%. This is because essential amino acids are those required for protein synthesis, and they are the components that make up proteins. So, in the context of essential amino acids, if you have 1 gram of EAAs, you essentially have 1 gram of protein, as all the essential amino acids are needed to form complete proteins. This product is 968 mg. 968 milligrams is equal to 0.968 grams.

Essential Amino Acid Supplement

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$ 19.95

Primary Benefit

Active Lifestyle & Fitness

Other Benefits

Men's Health

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