Keep your brain sharp, your nerves resilient, and your liver running cleanly. Source Naturals Inositol & Choline 400 mg / 400 mg delivers an equal 1:1 balance of two foundational nutrients your body relies on to build sturdy cell membranes, produce memory neurotransmitters, and break down fats efficiently.
✓Sharper Memory & Brain Function: Choline acts as the direct fuel your brain uses to produce acetylcholine, the master messenger for focus, learning, and muscle coordination.
✓Healthy Liver Fat Clearance: Both nutrients act as natural "fat movers" (lipotropic agents), helping your liver export fats smoothly so they do not build up over time.
✓Calm, Steady Nerve Signaling: Inositol supports cellular messenger systems inside your nervous system, promoting emotional balance and smooth signal transit between nerves.
✓Stronger Cellular Walls: Provides raw building blocks for phosphatidylcholine and phosphatidylinositol, keeping trillions of cell walls supple, flexible, and protective.
✓Clean, Hypoallergenic Formula: Zero yeast, dairy, eggs, gluten, soy, wheat, sugar, or artificial preservatives.
What Are Inositol & Choline? (In Plain English)
Think of your body as a high-speed communications network made of roughly 30 trillion individual cells. For those cells to talk to each other, they need two things: sturdy outer walls to protect their delicate machinery, and clear chemical messengers to send orders back and forth.
That is exactly where Inositol and Choline come in. While historically grouped with the B-vitamin family (often nicknamed vitamin B8 and vitamin B4), modern science recognizes them as essential structural nutrients that your body cannot always produce in high enough quantities on its own.
Choline (The Brain & Liver Worker)
Choline is an essential nutrient officially recognized by the National Academy of Sciences. Your brain turns choline straight into acetylcholine — the neurotransmitter responsible for attention, learning, memory recall, and motor commands. In your liver, choline builds the transport vehicles needed to carry fats into your bloodstream for energy rather than letting them accumulate in liver tissue.
Inositol (The Cellular Messenger)
Inositol (specifically myo-inositol) is a specialized carbohydrate molecule that acts as your cells' internal relay station. When a brain chemical like serotonin or dopamine knocks on the outside of a cell door, inositol carries that message into the cell nucleus so your brain registers calm, balance, and focus.
How the 1:1 Synergy Works in Your Body
Taking inositol or choline by itself can be helpful, but pairing them in an exact 400 mg to 400 mg ratio creates a powerful biological partnership known as synergy — where 1 + 1 equals far more than 2:
Every cell in your body is surrounded by a two-layer barrier called the phospholipid bilayer. Choline helps assemble phosphatidylcholine, while inositol creates phosphatidylinositol. Together, these two fats form the fluid structural armor that keeps cell membranes healthy, allows nutrients to enter, and keeps environmental toxins out.
2. Lipotropic Fat Metabolism & Liver Cleanse
"Lipotropic" literally means fat-loving or fat-moving. When your liver takes in dietary fats, it must wrap them in specialized proteins called Very Low-Density Lipoproteins (VLDL) before sending them off to nourish muscles or organs. Without adequate choline and inositol, your liver cannot package these fats, causing them to stall inside liver cells. Inositol and choline work hand-in-hand to promote clean, natural liver clearance.
3. Nervous System Balance & Cognitive Flow
Your nervous system relies on smooth, uninterrupted electrical currents running through nerve fibers. Phosphorus-containing inositol compounds act as biological switches that govern how nerve impulses travel, while choline keeps the acetylcholine supply chain running so mental fatigue does not slow down your reflexes or train of thought.
The Scientific Evidence: Clinical Backing & Research Insights
At VitaNet ®, we believe your health decisions should be backed by transparent, peer-reviewed clinical research — not marketing hype. Here is what modern biomedical studies confirm regarding choline and inositol:
Memory & Long-Term Cognitive Vitality
In the renowned Framingham Offspring Study, researchers evaluated nearly 1,400 adult participants over several years. Those with higher dietary choline intake performed significantly better on standardized verbal memory and visual memory tests, while also showing healthier brain white matter structures on magnetic resonance imaging (MRI).
Citation: Poly C, et al. Am J Clin Nutr. 2011;94(6):1584-1591. PMID: 22071706.
Hepatic Health & Fat Export Mechanisms
Clinical nutritional reviews by the University of North Carolina Nutrition Research Institute have demonstrated that insufficient choline intake rapidly leads to fatty infiltration in liver tissue. Restoring choline and phospholipid precursors reverses this accumulation by restoring normal hepatic VLDL assembly and lipid transport.
Citation: Zeisel SH, da Costa KA. Nutr Rev. 2009;67(11):615-623. PMID: 19906248; Corbin KD, Zeisel SH. Curr Opin Gastroenterol. 2012;28(2):159-165. PMID: 22134222.
Cell Signaling & Neurochemical Relay
Pharmacological evaluations of myo-inositol indicate that it serves as an indispensable substrate in the phosphoinositide (PI) cycle. This cycle is critical for relaying neurotransmitter signals across cell membranes in the central nervous system, helping regulate balanced mood and healthy stress response mechanisms.
Citation: Bizzarri M, et al. Expert Opin Drug Metab Toxicol. 2016;12(10):1181-1196. PMID: 27329438; Croze ML, Soulage CO. Biochimie. 2013;95(10):1811-1827. PMID: 23764390.
Complete Supplement Facts & Ingredient Listing
Source Naturals adheres strictly to comprehensive Good Manufacturing Practices (cGMP), providing high-potency, pure ingredients without hidden fillers.
Supplement Facts
Serving Size: 1 Tablet | Servings Per Container: 100
Active Ingredient
Amount Per Serving
% Daily Value
Choline (as choline bitartrate)
400 mg
73%
Inositol
400 mg
†
† Daily Value (DV) not established.
* Percent Daily Values are based on a 2,000 calorie diet.
Free of Common Allergens: Contains NO yeast, dairy, egg, gluten, soy, or wheat. Free of Artificial Additives: Contains NO sugar, starch, salt, preservatives, artificial colors, artificial flavors, or chemical fragrances. Suitable for vegetarians.
Suggested Usage, Dosage & Safety Guidelines
How to Take:
Take 1 tablet daily, preferably with a meal and a tall glass of water. Taking choline with food helps optimize digestion and nutrient assimilation.
Storage Instructions:
Store in a cool, dry place away from direct sunlight, excess heat, and humidity. Keep the bottle tightly capped when not in use.
Important Precautions & Physician Consultation:
If you are pregnant, may become pregnant, or are breastfeeding, consult your healthcare provider prior to using this product. If you have a diagnosed medical condition (particularly bipolar disorder or liver disease) or are taking prescription medications, speak with your doctor before starting any new dietary supplement. Do not use if either tamper-evident seal is broken or missing. Keep out of reach of children.
Why Buy Source Naturals from VitaNet ® LLC?
Trusted Since 1995
Serving wellness shoppers nationwide for over three decades with authentic, fresh, and professionally warehoused supplements.
12-Month Money-Back Guarantee
We stand by our products 100%. We even pay the return shipping on all returns for a complete refund of your purchase price.
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Frequently Asked Questions (FAQ)
What is the difference between Inositol and Inosine?
They are completely different substances! Inositol is a carbocyclic sugar-like compound (often known as vitamin B8) vital for cell membrane structure and neurotransmitter communication. Inosine is a nucleoside involved in ATP cellular energy production. Source Naturals Inositol & Choline provides pure Inositol combined with Choline to support nerve signaling, brain function, and lipid transport.
Why are Inositol and Choline paired together in a 400 mg / 400 mg dose?
Both nutrients work hand-in-hand to build cell walls (phospholipids) and clear fats out of your liver (lipotropic action). Providing an equal 400 mg amount of each creates a balanced nutritional foundation that supports both your liver's metabolic pathways and your brain's neurotransmitter networks simultaneously.
What is the best time of day to take Inositol and Choline?
Most individuals prefer taking 1 tablet in the morning or early afternoon with a meal. Taking it with food supports smooth digestion, and the morning timing ensures your brain has ample acetylcholine support for focus and daily cognitive tasks.
Does Choline Bitartrate support liver health?
Yes. Choline is required for your liver to create phosphatidylcholine, which is needed to synthesize Very Low-Density Lipoproteins (VLDL). VLDL transports triglycerides and fat out of liver cells into the bloodstream. Without sufficient choline, dietary fats can become trapped inside the liver.
Are there any side effects from taking Inositol & Choline?
At the standard serving of 1 tablet daily (400 mg each), side effects are rare and mild. Occasionally, sensitive individuals might experience mild digestive changes, such as loose stools or nausea, if taken on an empty stomach. Taking your tablet alongside a meal typically resolves any stomach sensitivity.
Peer-Reviewed Scientific Citations
Poly, C., Massaro, J. M., Seshadri, S., et al. (2011). The relation of dietary choline to cognitive performance and white-matter hyperintensity in the Framingham Offspring Cohort. The American Journal of Clinical Nutrition, 94(6), 1584–1591. DOI: 10.3945/ajcn.110.008938. PMID: 22071706.
Zeisel, S. H., & da Costa, K. A. (2009). Choline: an essential nutrient for public health. Nutrition Reviews, 67(11), 615–623. DOI: 10.1111/j.1753-4887.2009.00246.x. PMID: 19906248.
Corbin, K. D., & Zeisel, S. H. (2012). Choline metabolism provides novel insights into nonalcoholic fatty liver disease and its progression. Current Opinion in Gastroenterology, 28(2), 159–165. DOI: 10.1097/MOG.0b013e32834e7b4b. PMID: 22134222.
Bizzarri, M., Fuso, A., Dinicola, S., Cucina, A., & Bevilacqua, A. (2016). Pharmacodynamics and pharmacokinetics of inositol(s) in health and disease: toward an evidence-based approach. Expert Opinion on Drug Metabolism & Toxicology, 12(10), 1181–1196. DOI: 10.1080/17425255.2016.1202887. PMID: 27329438.
Croze, M. L., & Soulage, C. O. (2013). Potential role and therapeutic interests of myo-inositol in metabolic diseases. Biochimie, 95(10), 1811–1827. DOI: 10.1016/j.biochi.2013.05.011. PMID: 23764390.
National Institutes of Health (NIH) Office of Dietary Supplements. (2022). Choline: Fact Sheet for Health Professionals. U.S. Department of Health and Human Services.
FDA Disclaimer: *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your qualified healthcare practitioner before beginning any nutritional supplement program, particularly if you are pregnant, nursing, taking prescription medication, or managing a medical condition.
