Parastrin™

Advanced Parasite Cleanse & Gut Restoration

  • Helps target and eliminate intestinal parasites*
  • Supports healthy digestion & gut microbiome balance*
  • Promotes intestinal cleansing & digestive comfort*

Select Bundle: Buy 2 Bottles Of Parastrin™

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Description

Approved Science® Parastrin™ is an advanced intestinal cleanse formula designed to help support digestive health and promote a balanced gut environment. This powerful blend combines carefully selected botanical extracts and enzymes - including Sweet Wormwood, Black Walnut Hulls, Garlic Bulb, and Papain - along with BioPerine® to enhance absorption and overall effectiveness.

Parastrin™ works to help target unwanted parasites while supporting healthy digestion and intestinal function. By helping cleanse the digestive tract and restore balance within the gut, this formula supports overall digestive comfort and wellness.

Manufactured in a top-quality, cGMP-certified and FDA-licensed laboratory, Parastrin™ is produced to the highest standards for purity, safety, and potency. The ingredients in this formula have been studied in scientific research exploring their role in digestive health, microbial balance, and intestinal cleansing.

  • 3rd Party Tested

  • Vegan-Friendly

  • Money-Back Guarantee

  • GMP Certified

  • No Preservatives

How to take

Start with the 2-week cleanse: take 2 capsules in the morning and 2 capsules in the evening before meals. 

After that, move into maintenance by taking 1 capsule twice daily for up to 2 months.

For ongoing protection, this cycle can be repeated every 4–6 months.

After completing the cleanse cycle, taking Approved Science Probiotic can help replenish beneficial gut bacteria and support a healthier digestive balance.

Ingredients List

Sweet Wormwood (Artemisia annua) Extract (aerial parts), Black Walnut (Juglans nigra) Hull Powder, Barberry (Berberis vulgaris) Extract (root) (standardized to 5% Berberine), Triphala (Terminalia chebula, Emblica officinalis, Terminalia belerica) Powder (fruit), Clove (Syzygium aromaticum) Bud Powder, Garlic (Allium sativum) Bulb Powder, Pumpkin Seed (Cucurbita pepo) Powder, Thyme (Thymus vulgaris) Powder (leaf), Myrrh (Commiphora myrrha) Powder (gum), Papaya (Carica papaya) Powder (fruit), Papain 2000 USP/mg (fruit), BioPerine® (Piper nigrum) Fruit Extract (standardized to 95% Piperine) (standardized 50:1), Vegetable Cellulose (capsule), Rice Flour.

Allergen Info: Contains Black Walnut.

This formula is vegan-friendly.

Shipping & Returns

Shipping:

We currently offer Standard and Express shipping within the United States. The cost for shipping is based upon total order amount and can be seen inside your cart at the time of purchase. Standard shipping typically takes between 3-6 business days and Express takes 2-4 business days, once the product leaves our warehouse.

International shipping typically takes 2 - 4 weeks.

*There may be a 1-2 day processing time before the item is shipped.

Returns:

At Approved Science®, we stand behind our quality controls and offer a 60-day, money-back, satisfaction guarantee.


If at any time you are unsatisfied with a product you purchased from us or from one of our authorized sellers, you may return any opened & unopened bottles within sixty (60) days for a full refund of the purchase price, excluding shipping, by contacting our customer service team. Please see our full return policy for more information.

Thousands of 5-star reviews

Join tens of thousands of Americans who’ve already experienced the benefits and seen results!

After constantly traveling for 6 months, I wasn't surprised that I needed Parastrin. It has been a game changer! 10/10.

Lily A.

Approved Science consistently delivers supplements that work and parastrin is no exception! Another fantastic product!

Steven B.

I can't recommend this product enough! My digestive issues have completely disappeared. I have so much more energy and mental clarity.

Jordan D.

I found other parasite cleanses to be very harsh on my gut so I really appreciate that Parastrin is both gentle and effective.

Anita Q.

My naturopath told me I had parasites (yikes) and told me about Parastrin. What a relief to finally feel better! Highly recommend.

Alex N.

After struggling with chronic digestive issues and trying everything, northing helped until I tried Parastrin. This stuff really works!

Jenny S.

On top of always feeling bloated and uncomfortable, I was also tired all the time. My friend recommended Parastrin and I'm so happy she did!

Sharon K.

This product changed my life. I am no longer suffering after I eat and my bloating has totally gone. I feel so much lighter. 5 stars!

Kimberly G.

Out of the many parasite cleanses I've tried, this one made a real difference. This is also the longest I have gone without a reinfection. Thank you!

Tyler A.

TOP QUALITY CLINICALLY SUPPORTED INGREDIENTS FOR A COMPLETE PARASITE CLEANSE

FORMULATED TO HELP

SUPPORT INTERNAL CLEANSING

Helps promote the body’s natural elimination of unwanted intestinal organisms.

RESTORE GUT BALANCE

Supports a healthier intestinal environment and digestive balance.

SOOTHE DIGESTIVE DISCOMFORT

Helps calm occasional bloating, gas, and digestive irritation.

PROMOTE A HEALTHY MICROBIOME

Encourages a balanced gut microbiome for improved digestive wellness.

PROVIDE ANTIOXIDANT DEFENSE

Plant-based ingredients help protect the body from oxidative stress.

SUPPORT IMMUNE DEFENSE

Helps support the immune system’s natural defense within the digestive tract.

How Does Approved Science Parastrin™ Work?

Parastrin™ is formulated with carefully selected botanical ingredients traditionally used to support intestinal cleansing and digestive health. This advanced formula works to help create an environment that is less hospitable to unwanted organisms while supporting the body’s natural elimination processes. By targeting multiple aspects of digestive wellness, Parastrin™ helps promote internal balance, gut comfort, and overall digestive health.

STEP #1 CLEANSE

Unwanted organisms in the digestive tract can contribute to bloating, digestive discomfort, and fatigue. Parastrin™ contains targeted plant extracts used to support the body’s natural cleansing process and promote elimination.

STEP #2 SUPPORT

Key herbal ingredients help support digestive balance and promote a healthier intestinal environment. These compounds work together to support gut function, maintain microbial balance, and help restore digestive harmony.

STEP #3 PROTECT

Plant-based antioxidants help defend digestive tissues from oxidative stress while supporting a healthy intestinal lining. This protective support helps maintain gut comfort and promotes overall digestive wellness.

 

STEP #4 MAINTAIN

A balanced digestive system is important for long-term gut health. Parastrin™ helps support the body’s natural detoxification and elimination pathways while encouraging a healthy intestinal environment and ongoing digestive balance.

CLINICALLY BACKED FORMULA TO ELIMINATE PARASITES

These ingredients have been selected based on clinical data and chosen for their quality and purity to ensure an unmatched parasite cleanse

  • Sweet Wormwood

    SWEET WORMWOOD Trends in Pharmacological Sciences Artemisinins: their growing importance in medicine

    Contains the extract of Sweet Wormwood which is a non-toxic species of Wormwood. It is rich in artemisinins, which have demonstrated promising results in combating certain parasitic infections.     

  • Thyme

    THYMESultan Qaboos University medical journal Antimicrobial activities of clove and thyme extracts

    A herb with anti-inflammatory and antimicrobial properties. It has been used since ancient times to eliminate intestinal parasites.

  • Triphala Powder

    TRIPHALA POWDEREvidence-based complementary and alternative medicine : eCAM Evaluation of Antimicrobial Activity of Triphala Constituents and Nanoformulation

    A traditional Ayurvedic herbal blend that combines the benefits of three fruits - Amla, Haritaki, and Bibhitaki - to promote a balanced gut microbiome, thereby diminishing the presence of parasites and worms.

  • PAPAIN 2000

    PAPAIN 2000Revista do Instituto de Medicina Tropical de Sao Paulo In vitro efficacy of latex and purified papain from Carica papaya against Strongyloides venezuelensis eggs and larvae

    Papain is an enzyme found in Papaya that helps to break down parasites and kill parasitic worms. Papain also helps prevent future parasite infections.

  • Black Walnut Hulls

    BLACK WALNUT HULLSExperimental parasitology Juglone induces cell death of Acanthamoeba through increased production of reactive oxygen species

    Black Walnut contains juglone, a potent compound that disrupts the metabolic function of parasites and kills them. Additionally, it serves as a natural laxative, aiding in the elimination of parasites from the body.

  • Myrrh Gum Powder

    MYRRH GUM POWDERJournal of the Egyptian Society of Parasitology Effect of mirazid (Commiphora molmol) on experimental giardiasis

    Myrrh Gum is a natural resin that studies indicate can help kill parasites and other harmful microbes.

  • GARLIC BULB

    GARLIC BULB Alexandria Journal of Medicine Efficacy of Allium sativum (garlic) against experimental cryptosporidiosis

    Allium sativum contains sulfuric amino acids that have been shown to possess antiparasitic properties. These amino acids help inhibit the growth and reproduction of various parasites and intestinal worms.

  • BIOPERINE (PIPERINE)

    BIOPERINE® (PIPERINE)Asian Pacific Journal of Tropical BiomedicineBioavailability enhancers of herbal origin: An overview

    BioPerine® is a patented, concentrated source of Piperine, an alkaloid found in black pepper shown to increase the absorption and bioavailability of nutrients.  

  • Pumpkin Seed Extract

    PUMPKIN SEED EXTRACTInternational journal of molecular sciences Evaluation of Anthelmintic Activity and Composition of Pumpkin (Cucurbita pepo L.) Seed Extracts-In Vitro and in Vivo Studies

    Pumpkin Seeds contain cucurbitacin, a potent chemical compound with antiparasitic properties. It not only exhibits the ability to paralyze parasites but also facilitates their expulsion from the body.

  • Papaya Fruit Powder

    PAPAYA FRUIT POWDERJournal of medicinal food Effectiveness of dried Carica papaya seeds against human intestinal parasitosis: a pilot study

    Papaya aids in digestion and waste elimination, thereby helping to cleanse the body of parasites.

  • CLOVE

    CLOVEParasite The effect of pumpkin seed cake and ground cloves (Syzygium aromaticum) supplementation on gastrointestinal nematode egg shedding in sheep

    Cloves, derived from the Syzygium aromaticum tree, are known for their antiparasitic effects. They help break down parasite defenses and disrupt their metabolism, aiding in their removal from the body.

  • BARBERRY EXTRACT

    BARBERRY EXTRACTIranian journal of parasitology Protoscolecidal Effect of Berberis vulgaris Root Extract and Its Main Compound, Berberine in Cystic Echinococcosis

    A red berry that comes from the Berberis vulgaris plant. It contains the antioxidant Berberine which is an antiparasitic agent and can help destroy tapeworm cysts.


No Additives

No Preservatives

No Fillers

Vegan Friendly

3rd Party Tested

cGMP Certified

HOW DOES PARASTRIN™ COMPARE?

After extensive research of parasite cleanses, we have created a unique formula to help eradicate parasites and help prevent recurrences. 

Each ingredient has been carefully selected based on 20 years of research and clinical studies, ensuring maximum results with no side effects.

APPROVED SCIENCE PARASTRIN™

GAIA HERBS MICROBIOME CLEANSE

MT ANGEL PARA RESPONSE

HEALTH FORCE SUPERFOODS SCRAM

NATURAL AVENUE LABORATORIES PARANIX

Contains 250mg Allium sativum for its antiparasitic properties

Contains the enzyme Papain to eradicate parasitic worms

Contains non-toxic Sweet Wormwood Extract to aid in elimination of parasites

Contains Black Walnut Hulls to effectively kill parasites

Contains BioPerine® for increased bioavailability and faster results

Vegan-friendly

100% Money-Back Guarantee

Frequently Asked Questions

How long does it take to see results?

Most people start noticing changes during the 2-week cleanse phase, especially as the body begins clearing unwanted organisms. For deeper issues or recurring exposure, the full process can take longer. That’s why the maintenance phase exists, to help fully clear and stabilize your gut.

How do I take Parastrin™ for best results?

Start with the 2-week cleanse: take 2 capsules in the morning and 2 capsules in the evening before meals. After that, move into maintenance by taking 1 capsule twice daily for up to 2 months. For ongoing protection, this cycle can be repeated every 4–6 months.

After completing the cleanse cycle, taking a probiotic can help replenish beneficial gut bacteria and support a healthier digestive balance.

Why isn’t a single cleanse enough?

Because parasites don’t just disappear overnight. Eggs, larvae, and reinfestation cycles are the real problem. The initial cleanse targets active parasites, while the maintenance phase helps deal with what’s left behind and supports a more stable gut environment.

What makes Parastrin™ more effective than other parasite cleanses?

Most products hit one angle and hope for the best. Parastrin™ was built to do the full job:
1. Destroy parasites with targeted ingredients
2. Eliminate them from the body
3. Help prevent reinfestation
4. Restore gut balance afterward
That’s the difference between a temporary fix and a complete approach.

Do I need to take this every day?

Yes. Consistency is what makes this work. Skipping doses during the cleanse or maintenance phase reduces effectiveness and gives parasites more time to persist.

Can I take Parastrin™ with other supplements?

Yes, and many people stack it with a probiotic to help rebuild healthy gut bacteria during and after the cleanse. If you’re on medication, check with your healthcare provider first.

Try Parastrin™ Risk-Free for 60 days

If you are unsatisfied with your purchase, we offer a 60-day money-back guarantee.
You can return both opened and unopened bottles for a full refund of the returned bottles (excluding shipping costs).

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*Results will vary from person to person depending on the individual’s existing health condition, physical lifestyle, and diet. Testimonials and results contained within may not be an implication of future results and are based on the experiences of a few people and you may not have similar results. Always consult your doctor prior to making any dietary changes or starting any nutrition, health control or exercise program. This product is not intended to diagnose, treat, cure, or prevent any disease. The information in this website is not intended as a substitute for medical advice. These statements have not been evaluated by the Food and Drug Administration.