
Can You Take NAC Nattokinase and Bromelain Together?
Nattokinase, Bromelain, and NAC are three widely recognized supplements known for their roles in supporting cardiovascular health, reducing inflammation, and enhancing antioxidant defense.
In recent years, they have also gained attention for their potential to address post-viral complications such as Long COVID, particularly in relation to lingering spike protein activity, systemic inflammation, and circulatory issues.
However, whether using these supplements together is both safe and effective remains an important question.
By exploring the individual mechanisms of action and possible synergistic interactions among these compounds, this article aims to provide a clear and comprehensive understanding of their combined use.
We will also highlight key considerations, including safety, dosage, and potential benefits—especially in the context of post-viral recovery.
Before exploring further, please read the disclaimer located at the end of this webpage.
Key Takeaways
- Some studies have indicated that Nattokinase, Bromelain, and NAC can be safely and effectively used together in certain cases.
- Combining Nattokinase, Bromelain, and NAC can bring about significant health benefits.
- Some potential side effects may occur when combining Nattokinase, Bromelain, and NAC.
- Determining the appropriate dosage and usage regimen is crucial when combining these supplements.
Can You Take Nattokinase, Bromelain and NAC Together?
Research has demonstrated favorable outcomes when both Bromelain and Acetylcysteine are used together [4].
However, as of now, it has only been found that Nattokinase potentially interacts with certain cardiovascular drugs [5].
Therefore, while Nattokinase, Bromelain, and NAC each possess distinct biological activities, they may synergize when used together.
However, before starting this combination, be sure to discuss it with a doctor or healthcare professional to ensure safety.

Nattokinase is an important enzyme produced from the bacterium Bacillus subtilis natto.
This enzyme can directly break down fibrin and remains stable in the digestive tract, making it suitable for oral thrombolytic therapy.
NK is also considered a valuable nutritional supplement, with safety and ease of large-scale production [1].
Additionally, Nattokinase has applications in treating hypertension, Alzheimer's disease, and vitreoretinal disorders.
Many people choose to use supplements containing Nattokinase and have reported noticeable health benefits.*
User Ang shared: "I have been having to take Nattokinase for my blood flow for many years now (I’m 53). Some work well, some I have felt like I was ripped off. This one works exceptionally well! I reordered it because I’ve had no flow issues since starting this one."*
Similarly, user Blackberrysnowdrift also left a positive comment: "I use for heart health, circulation... I Highly recommend this product."*

Bromelain is a crude extract from the stem and fruit of pineapple, consisting of a mixture of enzymes and other components such as phosphatase, glucosidase, and cellulase.
Bromelain exhibits multiple enzyme activities with a pH range from 5.5 to 8.0 and is produced from fresh pineapple juice through filtration and drying methods [2].
Bromelain functions by selectively inhibiting the synthesis of pro-inflammatory prostaglandins and possessing analgesic and antibacterial properties.
NAC (N-Acetyl Cysteine), or Acetylcysteine, is a cysteine derivative used as a nutritional supplement. NAC has potent antioxidant and anti-inflammatory properties, helping to maintain cellular redox balance [3].

Adequate intake of cysteine and NAC plays a crucial role in maintaining health and replenishing glutathione, one of the body's most powerful antioxidants.
These amino acids may also support the treatment of chronic respiratory issues, improve reproductive function, and promote brain health.
How Do Nattokinase, Bromelain, and NAC Work Together?
Nattokinase, Bromelain, and NAC each play a unique role in supporting the body’s response to inflammation, oxidative stress, and circulatory imbalances—factors that are increasingly being associated with Long COVID and residual spike protein activity.
When used together, they may offer synergistic effects that are particularly relevant to those experiencing prolonged post-viral symptoms.
Enhanced Anti-Inflammatory Activity
Both Bromelain[6] and NAC[7] are known for their ability to reduce inflammation and alleviate discomfort related to immune system overactivation. In cases of Long COVID, chronic inflammation may contribute to symptoms such as muscle pain, brain fog, and fatigue.
When combined with Nattokinase—which may help modulate vascular inflammation—their synergistic effect may provide broader support for managing systemic inflammation.
Support for Circulatory and Vascular Health
Nattokinase is well-documented for its fibrinolytic (clot-dissolving) properties, which can be beneficial in addressing microclot formation—a phenomenon increasingly observed in some Long COVID patients.
When used in combination with Bromelain and NAC, which support vascular health through anti-inflammatory and antioxidant mechanisms, this trio may promote improved blood flow and oxygen delivery to tissues.
Digestive and Mucosal Support
Gastrointestinal symptoms are another common complaint in post-COVID recovery. Bromelain helps support protein digestion and soothes intestinal inflammation, while NAC aids in protecting the digestive mucosa through its antioxidant action.
Together with Nattokinase’s circulatory benefits, this combination may help restore balance in the gut and improve nutrient absorption in individuals recovering from viral illness.
Side Effects May Happen When Using This Combine
Although rare, using this combination may cause adverse effects such as digestive disturbances or allergic reactions in some individuals:
- Digestive disorders: Bromelain may cause mild side effects such as diarrhea, nausea, vomiting, and heavier-than-normal menstrual bleeding in some individuals, especially when taken at high doses.
- Increased risk of bleeding: It's also advisable to avoid using Bromelain and Nattokinase if you're taking blood thinners like Warfarin, as they may increase the risk of excessive bleeding.
- Allergic reactions: Bromelain should not be used by individuals allergic to pineapple or substances with potential cross-reactivity, such as grass pollen, latex, celery, fennel, carrots, and wheat.
- Drug interactions: There may be interactions between the components in this combination and other medications you're taking. Therefore, it's important to discuss with your doctor or pharmacist about any potential drug interactions.
If you experience any adverse symptoms while using this combination, stop immediately and seek guidance and treatment from a doctor or healthcare center.
Things Need to Consider When Taking Nattokinase, Bromelain, and NAC
Just like with any supplement we introduce into our bodies, it's essential to plan and understand how to use it safely and effectively.
Therefore, when using the combination of Nattokinase, Bromelain, and NAC, there are several things to consider:
- Dosage: Adhere to the recommended dosage for Nattokinase and each component. Overdosing can lead to unwanted side effects.
- Drug interactions: Discuss with your doctor or healthcare professional if you are taking any other medications.
- Health conditions: Consult with your doctor before using this combination if you have any health issues, exceptionally high blood pressure, digestive issues, or bleeding disorders. Because using Nattokinase may have implications for cardiovascular health.
- Allergic reactions: Monitor carefully for signs of allergic reactions after starting this combination, and stop using and consult with your doctor if any signs of allergic reactions occur.
- Product quality: Choose products from reputable and certified manufacturers to ensure product quality and safety. Currently, many counterfeit products are on the market, so to avoid "losing money and losing goods," choose products from reputable sources.
- Duration of use: Determine the duration of using this combination based on the guidance of your doctor or healthcare professional. Each type will be designed for specific usage hours; consider the instructions on the products for particular times.
Read more: 7 Best Nattokinase Supplements for Cardiovascular Health
Conclusion
In summary, we can conclude that using Nattokinase, Bromelain, and NAC together can bring significant health benefits, including improving blood circulation, reducing inflammation, and supporting immune function.
However, this can also cause some side effects and unwanted interactions, especially when combined with other medications. It's important to ensure they suit your current health condition.
Before using any supplements, consult with your doctor or healthcare professional first.
Related Article:
- Nattokinase And Vitamin K2: Are They The Same Thing?
- Benefits Of Nattokinase Supplements: Side Effects & Usage
- Nattokinase vs Aspirin: Natural or Pharmaceutical Blood Thinners?
References
- [1] Dabbagh F, Manica Negahdaripour, Aydin Berenjian, et al. Nattokinase: production and application. Applied microbiology and biotechnology. 2014;98(22):9199-9206. doi:https://doi.org/10.1007/s00253-014-6135-3
- [2] Pavan R, Jain S, Shraddha, Kumar A. Properties and Therapeutic Application of Bromelain: A Review. Biotechnology Research International. 2012;2012:1-6. doi:https://doi.org/10.1155/2012/976203
- [3] Cristina, Nayara Gomes Graciliano, Fabiana Andréa Moura, Cabral A, Oliveira M. N-Acetylcysteine (NAC): Impacts on Human Health. Antioxidants. 2021;10(6):967-967. doi:https://doi.org/10.3390/antiox10060967
- [4] (A) Bromelain and Acetylcysteine present a synergistic effect on severe... ResearchGate. Published 2021. Accessed May 9, 2024. https://www.researchgate.net/figure/A-Bromelain-and-Acetylcysteine-present-a-synergistic-effect-on-severe-acute-respiratory_fig1_349850528
- [5] Chen H, McGowan EM, Ren N, et al. Nattokinase: A Promising Alternative in Prevention and Treatment of Cardiovascular Diseases. Biomarker insights. 2018;13:117727191878513-117727191878513. doi:https://doi.org/10.1177/1177271918785130
- [6] Fitzhugh DJ, Shan S, Dewhirst MW, Hale LP. Bromelain treatment decreases neutrophil migration to sites of inflammation. Clinical immunology. 2008;128(1):66-74. doi:https://doi.org/10.1016/j.clim.2008.02.015
- [7] Queiroz K, Fabiana Andréa Moura, Marques J, Roberto O, Célia J, Oliveira M. Oxidative Stress and Inflammation in Hepatic Diseases: Therapeutic Possibilities of N-Acetylcysteine. International journal of molecular sciences. 2015;16(12):30269-30308. doi:https://doi.org/10.3390/ijms161226225
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