What is Betaine HCL & Pepsin and who is it for?
Thorne’s Betaine HCL & Pepsin provides betaine hydrochloride (a source of hydrochloric acid) and pepsin (a protein-digesting enzyme) to support optimal stomach acidity and digestive function. Each serving supplies these compounds in forms that complement the stomach’s natural digestive processes.
This supplement is designed for individuals who may benefit from additional support for stomach acid production, particularly those experiencing occasional indigestion related to protein-rich meals, older adults (as stomach acid production naturally declines with age), or individuals whose healthcare practitioner has identified low stomach acid as a concern.
Why choose Betaine HCL & Pepsin?
Many digestive concerns aren’t caused by too much stomach acid – they’re caused by too little. While heartburn and indigestion are often assumed to result from excess acid, low stomach acid (hypochlorhydria) can produce similar symptoms and is far more common than most people realize, especially as we age.
Unlike antacids that reduce stomach acid, Betaine HCL & Pepsin supports your stomach’s natural acid production. Thorne uses pure, undiluted, lactose-free pepsin, distinguishing it from many other products that may contain diluted or lower-quality pepsin preparations.
Fairfield Nutrition Thoughts
As a Functional Medicine practitioner, I frequently work with clients experiencing digestive concerns that trace back to inadequate stomach acid production. This is one of the most underappreciated factors in gut health, yet it affects protein digestion, nutrient absorption, and the overall health of the digestive tract.
In my practice, I’ve seen countless clients benefit from proper stomach acid support, particularly those over 50, those with nutrient deficiencies despite good diets, and those who struggle to digest protein-rich meals. This is a foundational tool in my approach to restoring optimal digestive function.
How does it work?
Think of stomach acid as your digestive system’s first line of defence and preparation. It’s not just about breaking down food – it’s about creating the right environment for the entire digestive cascade that follows.
Protein digestion initiation: Hydrochloric acid converts pepsinogen (an inactive enzyme) into pepsin (the active form). Pepsin then begins breaking down protein molecules into smaller peptides, making them easier for your small intestine to absorb. Without adequate stomach acid, this conversion doesn’t happen efficiently, and proteins pass through partially undigested.
Nutrient liberation and absorption: Stomach acid is essential for liberating nutrients from food and making them available for absorption. It’s particularly crucial for vitamin B12, iron, calcium, magnesium, zinc, folate, and beta-carotene. When stomach acid is low, even a nutrient-rich diet may not translate to adequate nutrient status.
Protective gastric environment: The acidic environment of the stomach serves as a protective barrier against ingested pathogens and helps prevent unwanted bacterial overgrowth in the small intestine. Proper stomach acidity also stimulates the flow of bile from the gallbladder and pancreatic enzymes, which are essential for fat digestion and overall nutrient breakdown.
What can this support?
This formula provides nutritional support for:
Age-related digestive changes: Stomach acid production naturally decreases with age. Many people over 60 produce significantly less hydrochloric acid than they did in their younger years, affecting their ability to digest protein-rich foods and absorb certain nutrients.
Protein-heavy meals: If you notice discomfort, fullness, or a feeling that food is “sitting” in your stomach after eating meat or other protein-rich foods, it may indicate insufficient stomach acid or pepsin for efficient protein digestion.
Nutrient absorption concerns: When lab work reveals low levels of iron, B12, or other nutrients that depend on stomach acid for absorption, supporting gastric acid production may help address the underlying absorption issue.
Post-gallbladder removal: Adequate stomach acid helps stimulate bile flow. After gallbladder removal, supporting stomach acid production can help encourage proper bile release from the liver.
General digestive support: For individuals whose healthcare practitioners have identified low stomach acid as a contributing factor to digestive discomfort, this supplement provides targeted nutritional support.
Common questions
How do I know if I have low stomach acid?
Common signs include feeling overly full after meals, burping, bloating, or experiencing indigestion specifically after protein-rich foods. Some people notice undigested food in their stools. However, these symptoms can have multiple causes, so it’s best to work with a healthcare practitioner for proper assessment.
How should I take this supplement?
Take 1-2 capsules with each meal that contains protein. Start with one capsule and assess your response. Some practitioners recommend a gradual increase in dosage, but this should be done under professional guidance. The capsules should be swallowed whole, not opened.
Can I take this if I have heartburn?
Paradoxically, heartburn can sometimes be caused by low stomach acid rather than excess acid. However, if you have been diagnosed with peptic ulcers, do not use this product. If you’re taking H2-blockers or proton pump inhibitors (acid-reducing medications), do not use Betaine HCL & Pepsin concurrently as these work in opposite ways.
What if I feel burning or warmth after taking it?
A slight warming sensation in the stomach is normal, but if you experience significant burning, discomfort, or pain, discontinue use and consult your healthcare practitioner. This may indicate that you don’t need HCL supplementation or that the dose is too high for your needs.
Is this safe for long-term use?
Betaine HCL & Pepsin is typically used on an as-needed basis with meals. Some individuals use it long-term under practitioner supervision, while others find they can reduce or discontinue use as their digestive function improves. Work with your healthcare provider to determine the appropriate duration for your situation.
Key Features
- Betaine hydrochloride for stomach acid support
- Pure, undiluted, lactose-free pepsin
- Supports protein breakdown and nutrient absorption
- Promotes optimal gastric pH
- 225 capsules per bottle
- Free from gluten and major allergens
- Practitioner-grade quality from Thorne
Suggested Use
Take 1-2 capsules with each meal or as recommended by your healthcare practitioner. Take with adequate water. Do not take this product out of the capsule.
Ingredients (per 2 capsules)
- Betaine Hydrochloride – 1.04g
- Pepsin (porcine) – 47mg
Other ingredients: Hypromellose capsule, calcium laurate, leucine, silicon dioxide
Free from: Lactose (pepsin is lactose-free)
These statements have not been evaluated by the TGA. This product is not intended to diagnose, treat, cure, or prevent any disease.












