L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine®) (100 mg, 60 capsules) by ProHealth

SKU: P206

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NAD+ Pro provides 15 grams of pure NAD+ powder to support energy, mood, appetite control and healthy metabolism.

  • Supports increased energy
  • Supports healthy mood
  • Supports appetite control and metabolism

Supports Energy Levels. NAD+ helps support energy levels. Because your body requires NAD+ to efficiently process food into energy, low NAD+ levels may impact how energized you feel. (1)

Supports Metabolism. NAD+ is an essential metabolite and coenzyme for multiple metabolic pathways and cellular processes. The ability of NAD+ to form its reduced version, NADH, is critical for all metabolic reactions in humans, including turning food into fuel. Aging typically causes slowing metabolism, and NAD+ may be able to help. (2)

Supports Healthy Mood. NAD+ may increase serotonin levels, our “feel good” neurotransmitter that supports healthy moods. (3)

View Certificate of Analysis »


1. Cantó C, Menzies KJ, Auwerx J. NAD(+) Metabolism and the Control of Energy Homeostasis: A Balancing Act between Mitochondria and the Nucleus. Cell Metab. 2015;22(1):31-53. doi:10.1016/j.cmet.2015.05.023

2. Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nat Rev Mol Cell Biol. 2021;22(2):119-141. doi:10.1038/s41580-020-00313-x

3. Kuchmerovskaia TM, Klimenko AP, Parkhomets PK, Donchenko GV. [Effect of NAD on uptake and release of some mediators by synaptic vesicles of the rat's brain]. Ukr Biokhim Zh (1978). 1993;65(3):66-70. PMID: 7904781

4. Roh E, Myoung Kang G, Young Gil S, et al. Effects of Chronic NAD Supplementation on Energy Metabolism and Diurnal Rhythm in Obese Mice. Obesity (Silver Spring). 2018;26(9):1448-1456. doi:10.1002/oby.22263

Supplement Facts
Serving Size: 1 capsule
Servings Per Container: 60
Amount Per Serving %DV*
Suntheanine® (L-Theanine) 100 mg
GABA 275 mg
5-HTP 10 mg
†Daily Value not established


Suntheanine ® is a registered trademark of Taiyo International, Inc. Use of Suntheanine® is protected by US Patent NO. US 6,589,566 B2
  • Other Ingredients: Capsule (gelatin, water), cellulose, magnesium stearate, silicon dioxide, stearic acid. Contains ingredients made from soy.
  • Contains No: Gluten, casein.
  • Suggested Daily Use: As a dietary supplement, take 1 to 2 capsules as needed, preferably between meals or as recommended by your health care professional.
  • Note: Do not use if tamper-evident seal is broken or missing. Close tightly after each use.

NAD+ Pro provides pure NAD+ (nicotinamide adenine dinucleotide) in a bioavailable powder sublingual format. When NAD+ is absorbed through the mucus membranes under the tongue it bypasses the gut and has the ability to cross the blood-brain barrier and increase NAD+ levels in the brain and throughout the body.
  • BioAvailable Powder. ProHealth’s NAD+ Pro Powder is a bioavailable powder sublingual format that allows for the similar benefits experienced through IV NAD therapy for a fraction of the cost, with much great convenience.
  • Pharmaceutical Grade. The NAD+ Pro Powder is Pharmaceutical Grade and made without chemical solvents.
  • Quality Manufacturing Practices. All of our products are manufactured in an FDA-registered, GMP-certified facility.
  • Third-Party Tested in the USA. Every batch of NAD+ Pro Powder is tripped-tested by third-party labs in the USA to ensure the highest quality, purity and potency. Certificates of Analysis are available.
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Customer Reviews

Based on 19 reviews

L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine®) (100 mg, 60 capsules) by ProHealth

Aaron B.
L theannine calm plex works

Great for low sleep nights after taking the pill I feel like I slept 8 hours . Awesome 😎

Calming supplement

Helps even out our mood!

Robert R.
L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine®) (100 mg, 60 capsules) by ProHealth

L-Theanine Calm-Plex with GABA and 5-HTP (Suntheanine®) (100 mg, 60 capsules) by ProHealth combines all three of the active ingredients that I was buying separately to help with my mood. When I saw this product on the ProHealth site I immediately jumped at the chance of purchasing this product. I haven't been let down. It works, it's very effective and very cost efficient for such a quality product. I highly recommend it.

Nancy C.

My husband has issues staying asleep because he can’t shut his brain off. These help him relax so he gets a long and restful sleep.

Marci R.

This supplement really does calm.

Lamiya C.
Changed My Life

This supplement has completely changed my mental for the better. I thought I needed heavy mental help and medications, but this has given me clarity, balance, and calmness I haven't experienced with any other product. This is now and forever will be my life saver and daily regimen. Thank you so much!

Dianne G.
Recommended by my physician

I’m very pleased with the result.

Sam P.

Very please with effective ness

danny e.
Higher dose than most

I use this brand because there is a higher dose in one capsule

Frequently asked questions

As a dietary supplement, take 1 to 2 capsules as needed, preferably between meals or as recommended by your health care professional.
Simply close tightly after each use.
L-theanine generally does not have side effects, but 5-HTP may cause nausea, heartburn, gas or loss of appetite. High doses of 5-HTP (which are not found in this formula) can cause serotonin syndrome, a dangerous condition caused by too much serotonin in the body.