What Are HPMC Capsules? Everything You Need to Know

If you've looked at supplement labels, you might have noticed "HPMC capsule" listed in the ingredients. It's not the active ingredient. It's the capsule shell itself. This article explains what HPMC is, how it compares to other capsule materials, and answers common questions about safety and suitability.

HPMC stands for Hydroxypropyl Methylcellulose (also called Hypromellose). It's a plant-derived material made from cellulose, the main structural component of plant cell walls.

Cellulose is naturally water-insoluble. Through modification, it becomes water-soluble HPMC, which forms stable, plant-based capsule shells suitable for holding supplement powders.

HPMC capsules are plant-based, vegan capsule shells used in dietary supplements and medications.

HPMC is approved as safe by regulatory authorities in both the EU (EFSA) and the US (FDA), where it holds the GRAS Status (Generally Recognised as Safe).

Safe tolerance levels far exceed any amount consumed from supplement use. Even taking multiple supplements in HPMC capsules daily remains well within established safety thresholds.

How HPMC behaves in the body: HPMC passes through the digestive system unchanged and is eliminated naturally. The body does not absorb it.

For decades, most supplement capsules were made from gelatin, derived from animal sources (typically pig, cow bones and skin, or fish). Gelatin capsules cost less to produce but have certain limitations:

Gelatin capsules:

• Derived from animal sources

• Not suitable for vegan or vegetarian diets

• May not meet halal or kosher requirements

• Can cause issues for those with fish or shellfish allergies (from fish gelatin)

• Less stable under extreme temperatures and humidity

• May become brittle or sticky depending on storage conditions

HPMC capsules:

• Plant-based and vegan

• Halal and kosher certified

• Allergen-free

• Stable across varied temperatures and climates

• Consistent performance across storage conditions

The answer depends on individual requirements. Here's an objective comparison:

HPMC advantages:

• Suitable for all dietary restrictions (vegan, vegetarian, religious requirements)

• More stable storage properties

• Allergen-free

• Plant-based sourcing

Gelatin advantages:

• Lower production costs

• Long history of pharmaceutical use

Many supplement manufacturers use gelatin for some products and HPMC for others, primarily based on cost considerations. Gelatin is less expensive to produce.

MakeWell uses HPMC capsules exclusively across all products. This approach ensures consistent suitability across the product range regardless of dietary requirements or religious observances.

Some supplements require protection from stomach acid to function effectively. Live Lactic Acid Bacteria and certain enzymes can be damaged by gastric acid before reaching the intestines.

For these products, MakeWell uses DRcaps®, HPMC capsules fortified with gellan gum that resist stomach acid and release contents in the small intestine.

MakeWell products using DRcaps®:

• G.I. Flora Immune (live lactic acid bacteria)

• Antiox CellProtect (Bromelain enzymes)

All other MakeWell products use standard HPMC capsules that dissolve in the stomach and release contents immediately.

Q: Are HPMC capsules vegan? Yes. They're made from plant-derived cellulose.

Q: Are they kosher and halal? MakeWell HPMC capsules are certified for both.

Q: Can I take HPMC capsules if I have allergies? HPMC capsules are allergen-free and don't contain common allergens, including gluten, dairy, soy, fish, or shellfish.

Q: Do HPMC capsules affect supplement absorption? No. HPMC capsules dissolve reliably and release their contents similarly to other capsule types. Most dissolve in the stomach within minutes.

Q: Are they more expensive? HPMC production costs more than gelatin, which may affect product pricing. The increased cost reflects broader dietary suitability.

Q: How long do HPMC capsules remain stable? MakeWell HPMC capsules maintain quality for up to 5 years when stored properly.

Disclaimer: This information is for educational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new supplement regimen.

DRcaps® is a Trademark of Lonza or its affiliates.