Zena Colostrum Review: Affordable Gut & Immune Support That Works?

Zena Nutrition, a rising star in the supplement world, launched in 2024 1 with a mission to make wellness affordable for everyone, especially since it’s now stocked at Costco, making it accessible for a wide audience. But does the lower price mean lower quality? In this in-depth review, we evaluate Zena Colostrum using 10 trusted industry criteria to help you decide if it’s the right fit for your wellness routine.

Founder’s Story:

While details about the founders’ journey are scarce, Zena Nutrition emphasizes its commitment to accessibility and affordability 1. This resonates throughout their product line, which includes colostrum, greens powders, and collagen, all at prices that won’t break the bank.

Benefits of Zena Colostrum:

Zena Colostrum is touted for its potential to:

• Support gut health: Colostrum may help improve digestion, reduce gut inflammation, and promote a healthy gut microbiome.
• Boost immunity: Packed with immunoglobulins, colostrum may help strengthen the immune system and fight off infections.

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✅ Source & Quality

Zena sources its colostrum from U.S. dairy farms, though details about grass-fed or pasture-raised status are limited. While the origin is reliable, more transparency about farming practices would boost trust.

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✅ Processing Method

Zena claims to use gentle, low-heat processing, which helps retain essential bioactive compounds like immunoglobulins (IgG) and lactoferrin. This is a strong point, especially at this price range.

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✅ IgG (Immunoglobulin) Content

Zena Colostrum provides an IgG content of around 15-25%, which is lower than premium products like ARMRA (30-40%) or WonderCow (40%), but still effective for general immune support.

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✅ Third-Party Testing & Certifications

Zena claims every batch is third-party tested for quality, purity, and safety, so you can trust you’re getting their best.

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✅ Additives & Fillers

Zena Colostrum is free from artificial additives and fillers. Unless you use capsules, which are made of Hypromellose (HPMC) and are safe for consumption. Hypromellose, also known as hydroxypropyl methylcellulose (HPMC), is a plant-based polymer derived from cellulose, making it a popular alternative to gelatin capsules, especially for vegetarians and vegans. It’s been approved by regulatory agencies like the FDA and EFSA as a safe food and pharmaceutical additive. 

While hypromellose is generally safe, some individuals may experience mild side effects like digestive discomfort in rare cases, but these are typically not serious. It’s always a good idea to consult with a healthcare professional if you have any concerns or allergies. 

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✅ Liposomal vs. Non-Liposomal

Zena is a non-liposomal formula, which may limit bioavailability compared to newer liposomal options. However, for users just starting out, this traditional form still offers measurable benefits.

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✅ Ethical & Sustainable Sourcing

The website states our colostrum comes from grass-fed cows on trusted farms and is collected only after calves receive their essential first feed.

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✅ Form & Delivery Method

Available in powder form, Zena mixes easily into water or smoothies. It also comes in capsules —lightweight and convenient, especially for travel.

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✅ Customer Reviews & Reputation

Zena has mixed but generally positive reviews across platforms like Costco, Amazon, and Google, with users reporting improvements in digestion and immunity. However, some mention an inconsistency in texture or mixability.

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✅ Price & Value

One of Zena’s biggest strengths is its price. It’s among the most affordable colostrum supplements on the market and is often sold in multi-pack discounts at Costco. While it’s missing a few premium features, it delivers solid foundational benefits for a fraction of the cost.
Price per serving (1g): $0.5-$0.66 for dry powder based on the size of a jar. For capsule form – $0.8 per serving (3 capsules). Subscription discounts are available.

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🛍️ Where to Buy

Zena Colostrum is now available in select Costco locations and online through their official site and Amazon (powder) and Amazon (capsules), which offers and subscribe and save option. This makes it easy to access and even more appealing to budget-conscious shoppers.

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🔄 Return Policy

You can return unopened item(s) within 90 days of the purchase date for a full refund. You can return opened item(s) within 90 days of the delivery date for a 50% refund. 

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🐄 Final Rating: ★★★★☆ (4.1/5)

Pros:

• Affordable and widely available
• Clean formulation with sunflower lecithin
• Gentle processing method
• Convenient powder format
• Costco-ready pricing

Cons:
– Lower IgG concentration (15-25%)
– No liposomal delivery
– Limited transparency

🔗 Want to see how Zena compares to the top brands? View our Full Colostrum Comparison Guide