
User Reviews on Mankai: Real-Life Experiences
Mankai is a small plant with an impressive nutrition profile. Scientists have found nine types of amino acids and more than 60 nutrients in it - most notably vitamin B12. These give it potential heart health benefits, such as supporting healthy metabolism and reducing belly fat [1].
This article summarizes real-life experiences from people who have used Mankai, shared across popular online communities. Their stories may help you decide whether Mankai is right for you.*
Before exploring further, please read the disclaimer located at the end of this webpage.
Key Takeaways
- Mankai contains easily absorbed vitamin B12 and protein, offering a nutritional boost that many other plant sources lack [1].
- Users report benefits such as improved digestion, higher energy, better focus, and potential heart support.*
Why Mankai Has Become So Popular
Mankai (also known as Wolffia Globosa) is an aquatic plant commonly found in ponds, swamps, and lakes across Southwest Asia. In recent years, it has attracted remarkable attention due to growing demand for clean-label, plant-based ingredients and renewed interest in sustainable nutrition [2].
Its rise in popularity is also driven by conversations across online communities. Many people encountering topics related to vitamin B12 and vegetarian-friendly protein sources on Quora often see Mankai mentioned as a suggested option.*
This visibility has helped the ingredient reach audiences who previously had little knowledge of it.
Curiosity has increased further as users consistently share their experiences online. Many report noticeable changes after adding Mankai to their diet, prompting even more discussion and discovery.*
These testimonials circulate widely, creating a word-of-mouth effect — even though long-term scientific evidence is still limited.
*Based on users, not clinical evidence.
How We Collected These User Experiences
We collected and analyzed user feedback from open online sources such as Reddit discussions, Amazon reviews, Quora threads and community health forums to identify common experiences and trends related to Mankai use.
Comments containing ads or duplicates were removed to ensure a balanced overview of real consumer opinions. In addition, several scientific studies were reviewed to clarify the potential benefits and limitations of this supplement.
This summary reflects publicly shared opinions and research data - it is not professional medical advice. This article does not provide medical recommendations.
Reported Benefits from Real Mankai Users

Increased Nutritional Value for Vegans
Many users praised Mankai as a rare plant-based source of vitamin B12, especially valued by long-term vegans. Also, several noted that it tastes similar to kale or spinach, making it easy to add to vegan dishes like tofu scrambles or smoothies.*
A user commented that he was able to get his vitamin B12 from Mankai and felt fine using it, with no side effects: “This Christmas Eve made 11 years since I stopped eating animals (I was 9), and I’ve only recently started taking B12 supplements. It’s easy, but it would be great if I could introduce these into my diet.”*
Related article: Duckweed vs Azolla nutrition: Which is the better?
Improve digestion
Mankai is a plant, so it naturally contains fiber [1]. Some users have tried cooking it and found it easy to eat, with a taste similar to seaweed, and reported that it may help digestion and nutrient absorption. However, its long-term effectiveness is still unclear.*
Enhance Concentration
Mankai contains a significant amount of Omega-3, which supports brain function [1, 2]. Some studies and user experiences report positive effects*, but more research is needed to confirm its safety and long-term benefits.
Notably, Harvard research shows that combining Mankai with green tea as part of a Green-Mediterranean diet may help slow brain aging through anti-inflammatory effects, rather than just boosting alertness.
Reported Side Effects and User Complaints about Mankai
However, not all experiences were positive. Some users on Reddit warned about high oxalate content (2–4%) in duckweed, which could pose a risk for people susceptible to kidney stones.
To clarify this safety concern, a 2020 study in Toxicology Reports performed high-dose trials on animals. The findings showed no oxalate crystals in the urine and no kidney damage in the test subjects (Kawamata et al., 2020).
Although these results still need to be confirmed in humans, the experimental data indicates that the risk of toxicity might not be as high as online warnings suggest.
Others found its taste or texture unappealing, while a few doubted the bioavailability of its B12 compared to standard supplements.
In short, Mankai is seen as a promising and nutrient-rich plant, but its effectiveness and long-term benefits still need more research and careful use. All benefits shown above are based on user reports, not medical advice.
Common Dosages and How People Use Mankai
Mankai has only recently become popular as a nutritional supplement. Typical daily doses range around 100 g, and it has shown potential in boosting metabolism and reducing fat storage*.
Someone shared on his personal page: “The Green-MED group consumed green tea (3 - 4 cups/day) and Wolffia globosa (duckweed strain) green shake (100 g frozen cubes/day) with 800 mg/day polyphenols, while reducing red meat intake. We used MRI to measure abdominal fat.”*
Besides consuming it as a powdered shake, many users in Southwest Asia prepare Mankai in everyday dishes, such as mixing it with eggs for frying or adding it to salads. In general, its taste is similar to seaweed, and some people compare it to spinach.*
The information above comes from actual user feedback and does not have a scientific basis. You should do your own research and consult a doctor or nutritionist before using Mankai.

Who Might Benefit the Most (and Who Should Be Cautious)
Natural Mankai supplements are often considered by individuals looking for convenient plant-based nutrition.
With its naturally high protein and micronutrient content, Mankai is suitable for people following a plant-based diet or anyone wanting to diversify their daily meals with more plant-based ingredients.*
However, research on Mankai’s benefits, safety, and appropriate dosage remains limited. Before using any Mankai-containing product, you should check the certification of ingredient origin to ensure quality.
It’s also important to review details about the manufacturing process, third-party testing, and seek expert advice to ensure proper and safe use.*
Read more: What is Duckweed Tea? How to Make Duckweed Tea?
Overall User Sentiment: The Big Picture
Based on discussions, opinions on using duckweed (Mankai) as a nutrient source, especially for vitamin B12 and protein, are mixed.
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About 40% of users support its use, citing practical benefits like bioavailable B12, high protein, omega-3s, and iron, with just 100 g per day being enough to improve B12 levels in both vegetarians and meat-eaters.*
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Around 50% are more skeptical, noting that other plant sources of vitamin B12 often contain inactive forms. Mankai or seaweed may not provide usable vitamin B12, and the concept of plant-based B12 isn’t entirely new.*
Overall, while duckweed shows promise as a convenient, effective plant source of B12, caution remains due to concerns about the bioavailability of plant-derived B12 and the novelty of the research. Most of the users also point out potential risks from heavy metals or contamination in unclean water sources.*
All the information above comes only from actual user experiences and cannot be used as a scientific basis.
Conclusion
Based on the compiled information, Mankai can be viewed as a supplementary addition to everyday meals.*
However, like any food or supplement, it serves only as a supporting element. Long-term health ultimately depends on overall lifestyle habits.
Rather than relying solely on Mankai, it’s best to focus on building a healthy routine: maintaining a balanced diet, getting enough sleep, staying active, and managing stress.
These habits form the real foundation for long-term wellness and help your body function at its best. If you’re considering adding any supplement to your diet, consulting a healthcare professional is always recommended.*
Testimonial Disclaimer
*The testimonials presented on this website are provided by individuals based on their personal experiences with our products. These testimonials represent individual opinions and experiences, which may not be typical or applicable to all users of our products. Results may vary depending on a variety of factors, including individual health, lifestyle, and adherence to product usage instructions.References
- [1] Sela, I., Meir, A. Y., Brandis, A., Krajmalnik-Brown, R., Zeibich, L., Chang, D., … Shai, I. (2020). Wolffia globosa–Mankai Plant-Based Protein Contains Bioactive Vitamin B12 and Is Well Absorbed in Humans. Nutrients, 12(10), 3067–3067. https://doi.org/10.3390/nu12103067
- [2] Wolffia globosa (Mankai). (2024). Retrieved from https://www.alzdiscovery.org/uploads/cognitive_vitality_media/Wolffia_globosa_(Mankai)_UPDATE_(food_drink).pdf
- [3] Kawamata, Y., Shibui, Y., Takumi, A., Seki, T., Shimada, T., Hashimoto, M., Inoue, N., Kobayashi, H., & Narita, T. (2020). Genotoxicity and repeated-dose toxicity evaluation of dried Wolffia globosa Mankai. Toxicology Reports, 7, 1233–1241. https://doi.org/10.1016/j.toxrep.2020.09.006
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Product Disclaimer
Including an ingredient or study does not evaluate, endorse, or recommend any Vinatura product or any third-party product. Some ingredients discussed may not be used in any Vinatura product.
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