Advanced Parasite Cleanse & Gut Restoration
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
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.
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:
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.
Select Bundle: Buy 2 Bottles Of Parastrin™
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Secure Checkout • 60-day money back guarantee
Made in US • 3rd Party Tested
Standard Shipping: 3-6 Business Days*
Expedited Shipping: 2-4 Business Days*
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
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.
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:
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.
Join tens of thousands of Americans who’ve already experienced the benefits and seen results!
FORMULATED TO HELP
Helps promote the body’s natural elimination of unwanted intestinal organisms.
Supports a healthier intestinal environment and digestive balance.
Helps calm occasional bloating, gas, and digestive irritation.


Encourages a balanced gut microbiome for improved digestive wellness.
Plant-based ingredients help protect the body from oxidative stress.
Helps support the immune system’s natural defense within the digestive tract.
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.


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

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.

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

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

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

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

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.

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.
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No Additives
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No Preservatives
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No Fillers
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Vegan Friendly
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3rd Party Tested
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cGMP Certified
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
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Contains the enzyme Papain to eradicate parasitic worms
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Contains non-toxic Sweet Wormwood Extract to aid in elimination of parasites
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Contains Black Walnut Hulls to effectively kill parasites
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Contains BioPerine® for increased bioavailability and faster results
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Vegan-friendly
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100% Money-Back Guarantee
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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.
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.
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.
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.
Yes. Consistency is what makes this work. Skipping doses during the cleanse or maintenance phase reduces effectiveness and gives parasites more time to persist.
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.

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.