Frequently Asked Questions

No, your orders will not be affected. Starting August 29, 2025, all goods entering the U.S. will require customs clearance and may be subject to duties, even for small shipments. However, Fenben LAB anticipated this change and prepared in advance. We have fully stocked our U.S. warehouses, which means your orders are shipped directly within the United States. This ensures:

• No customs delays – orders are processed and delivered on time.
• No extra charges – you will not face unexpected duties or import fees.
• No disruptions – access to Fenben LAB products remains smooth and reliable.

For customers worldwide, nothing changes either: orders are always fulfilled from the nearest Fenben LAB warehouse to ensure the fastest and most reliable delivery. Fenben LAB continuously monitors international regulations to guarantee uninterrupted supply across all regions.

We have invested in state-of-the-art testing equipment to establish strict in-house quality control. Our commitment to excellence is demonstrated through the use of advanced technology, including a brand-new Bruker FT-IR spectrometer, designed for precise and reliable product identity testing, and an Agilent HPLC device, which rigorously analyzes product purity with exceptional accuracy. These cutting-edge tools ensure that every product meets the highest standards and exceeds customer expectations.

Follow the following steps to make an order on the Fenben LAB webstore:

1. Visit the ‘Shop’ section of the Fenben LAB website.
2. Choose one of the desired product categories – 222mg capsules, 444mg capsules, 500mg capsules, powder, or bulk powder.
3. Once in the product page, to the right of the product image you can see the red window. By clicking the box inside, you can choose the product variation that you want. Capsule choices: 30, 90, 180, 360 or 720 capsules. You can choose powder in 25g, 100g or 250g containers. Larger amount of powder – 500g, 1000g or 2000g:

4. Once the desired variation and amount of the product is set, you can go ahead and click the yellow ‘Add to Cart’ button.
5. When all the products are chosen, you can visit your cart by clicking the red ‘Cart’ button at the top right corner of the page. Once your shopping cart summary slides out, press the red ‘Checkout’ button.

At checkout:

Step 1:

Enter your Billing information. If your billing address differs from your delivery address, press the checkmark next to the ‘Ship to a different address?’ text and enter your delivery address.

Step 2:

Choose the shipping method, if more than one option is available.

Step 3:

Choose the payment method between Credit/Debit Card payment, PayPal payment and Bank /Wire Transfer.

If you are having difficulties with the Credit/Debit Card payment method, please see the answer to the ‘I am trying to make an order and my card keeps getting declined. What can I do?‘ question at our FAQ page.

Step 4:

Press the ‘Place order’ button where you will be taken to the payment method completion page.
Once the payment is complete, your order will be complete as well.

Fenben LAB Fenbendazole capsules can be opened, but they do not open easily.

Fenbendazole itself is insoluble in water. The capsule shells in which Fenbendazole is contained are water-soluble, so they cannot protect against direct contact with moisture.

The Fenben LAB Fenbendazole 222mg, 444mg and 500mg capsules use the same Fenbendazole powder as the one sold as Fenben LAB Fenbendazole powder. Their purity is identical.

The 500mg fenbendazole capsules can be combined in different quantities to form totals such as 1000mg, 1500mg, or 2000mg.

Fenben LAB Fenbendazole 222mg, 444mg and 500mg capsule shells are made of identical materials. They are made of modified cellulose, which is plant-based.

Yes, of course. The shells are made of modified cellulose, making them fully biodegradable and environmentally friendly.

Fenben LAB's Fenbendazole capsule shells are made of modified cellulose, which is plant-based.

There are no fillers in Fenben LAB Fenbendazole capsule products.

The only ingrediеnt is 100% Fenbendazole.

Our store uses USD as the base pricing currency. All product prices are set in USD, and other currencies (EUR, GBP, AUD, CAD) are displayed through automatic real-time conversion based on current exchange rates. Because these rates fluctuate, prices in non-USD currencies may vary slightly over time.

All promotions and discounts are applied directly to the USD price, since USD is our base currency.
Other currencies are updated automatically through conversion, so the displayed discount amount in EUR, GBP, AUD, or CAD may differ from the USD value shown in banners or emails.
The USD price is always the fixed reference point for all promotions.

There are no fillers in Fenben LAB Fenbendazole powder products.

The only ingrediеnt is 100% Fenbendazole.

The 222mg capsules are size 0, which is 0.76 in or 19.4 mm in length (±0.76 mm). The 444mg and 500mg capsules are size 00, which is 0.85 in or 21.7 mm in length (±0.76 mm). Please see the capsule size comparisons below.

Fenben LAB offer Fenbendazole in various forms, ensuring purity and fast delivery, with a focus on quality, safety, and environmentally responsible packaging.

Yes, we are the only ones providing a 100% product delivery guarantee to our clients.

A special ~222mg Measuring Spoon/Scoop is included in every Fenben LAB powder product. It is a great measure for 222mg Fenbendazole powder. For weighing micro-measurements, milligram scales are used, which can be purchased online.

One gram (g) is equivalent to 1 000 milligrams (mg).
Fenben LAB Fenbendazole 250g Powder consists of 250 000 milligrams.

Fenben LAB Fenbendazole powder is convenient to measure with a special ~222mg Measuring Spoon/Scoop that is included in every Fenben LAB powder product.

Fenben LAB 25g powder / 0.88 oz / 25 000 mg / 112 spoons of 222mg Fenbendazole.
Fenben LAB 100g powder / 3.53 oz / 100 000 mg / 450 spoons of 222mg Fenbendazole.

Fenben LAB 250g powder / 8.82 oz / 250 000 mg / 1 126 spoons of 222mg Fenbendazole.
Fenben LAB 500g powder / 17.64 oz / 500 000 mg / 2 252 spoons of 222mg Fenbendazole.
Fenben LAB 1000g powder / 35.27 oz / 1 000 000 mg / 4 504 spoons of 222mg Fenbendazole.
Fenben LAB 2000g powder / 70.55 oz / 2 000 000 mg / 9 008 spoons of 222mg Fenbendazole.

Fenben LAB Fenbendazole as a pure substance is hydrophobic. The modified cellulose capsule shells containing Fenbendazole dissolve in water. However, Fenbendazole itself does not dissolve in water.

If you do not plan to open the container constantly, the best thing to do would be to place the bottle in a dry, dark area, which is below 77 °F (<25 °C), equivalent to room temperature, e.g. a cabinet.

We also advise you not to throw away the silica gel packets because they are great at protecting the bottle contents from collecting humidity.

Fenben LAB Fenbendazole powder is not affected by indoor humidity.

If the indoor humidity is below 60%, Fenben LAB Fenbendazole capsules are not affected.

Fenben LAB Fenbendazole products can be stored at room temperature, but we recommend storing them in the refrigerator.

Fenben LAB Fenbendazole powder can be held inside the refrigerator, as well as inside the freezer. 

Fenben LAB Fenbendazole capsules can be held in the refrigerator.

The capsules can not be stored in the freezer as the extremely low temperatures cause the shells to crumble.

Yes, Fenben LAB ensures that its Fenbendazole products are stored under optimal conditions in all of its warehouses. This ensures that the packaging is not damaged and that the properties of the product are not affected.

The expiration date of our products is about 2 years, depending on the batch number. If kept tightly closed in the freezer, the expiration date can be extended significantly.

Fenbendazole is soluble in fat to some degree.

Pure Fenben LAB Fenbendazole powder is hydrophobic. This means that it does not dissolve in water.

In our shop, we have arranged the Fenbendazole products in boxes according to the size of capsules, not according to the number of capsules in the packaging. As a result, when a customer goes to the box for the desired weight of a product, they often do not notice that there is a wide choice of products.

In the box you can select the desired amount of Fenbendazole and then, at the click of a button, you will see the actual price of the exact product you have selected.

When you receive the shipment confirmation email from Fenben LAB, you can track where your shipment is by clicking on the ‘Track Your Order’ button.

Even though you have provided your delivery address for receiving the parcel, sometimes deliveries are often made to the customer’s Mailbox or the nearest Parcel Locker, not the delivery address. You then receive tracking updates to your email address or phone.

PayPal has payment plan options. In checkout, select PayPal as payment method. When you get redirected to PayPal please log into your PayPal account and see if the ‘Buy now and Pay in 3’ payment plan is available as an option.

Please see the link below to check if it is eligible for you. PayPal Pay in 3

Step 1:

At checkout click the ‘Click here to enter your code’ text and the ‘Coupon code’ box appears.

Step 2:

Enter the discount code in the ‘Coupon code’ box and click the ‘APPLY COUPON’ button to the right of the box.

Your discount is now added to the subtotal. You can now see the final product price.

As we are a European company and our payment processor is from Europe, some banks, mostly from North America, block our orders.

There are few ways to resolve this situation:

• The easiest way to make a payment is through the PayPal system. There is no need to have an account. Select PayPal as payment method, when you get redirected to PayPal, press the ‘Pay with Band Account or Credit Card’ button on the bottom of the window to pay with your card. Please see the image:

• If you wish to pay only using the ‘Card’ payment option at checkout, please call your bank to inform them about this payment and ask to remove the limitation. Then place a new order.

Please visit the link below for a convenient shopping experience.

 Shop | Fenben LAB 

Feel free to call us if you need more assistance. 

At Fenben LAB, the quality and purity of our Fenbendazole products are our highest priorities. To ensure that all our products meet the most rigorous standards, each batch undergoes thorough analysis for purity and quality.

If you've received your order of Fenbendazole and have changed your mind, we fully understand and are here to support you. Our policy allows the return of products provided they are unopened and unused. Should you decide to return your product, please follow the outlined steps below to ensure a smooth and swift refund process:

Contact customer service: Get in touch with our dedicated customer service team at your earliest convenience. They are committed to providing hassle-free assistance and will guide you through the return process.

Follow return instructions: You will receive detailed instructions from our customer service on how to securely return your Fenbendazole product, ensuring it arrives back to us in its original condition.

Refund process: Upon receiving and verifying the product's condition, we will process your refund promptly. The refund will be credited to your original payment method, though the timing may vary based on your bank or payment provider's policies.

Please remember that our refund policy applies only to unopened and unused products, and returns must be made within 60 days of purchase for a full refund. Our customer service team is ready to assist you with any concerns and guide you through the return and refund process. Do not hesitate to reach out for instructions on returning the product.

If you decide to cancel your Fenbendazole purchase with us and the payment has already been processed, but your order hasn't left our warehouse, rest assured, we've got you covered. We will issue a refund and cancel the order. Please contact our customer service, by clicking here.

Yes, your parcel should still reach you. Our customer service team will contact you to verify the delivery address if there are any uncertainties.

If you notice an error in the delivery address you provided, please contact our customer service team immediately.

Fenben LAB covers all costs associated with the 100% product delivery guarantee. We offer this guarantee to you at no extra charge.

Yes, we guarantee delivery of your parcel. If it's lost during shipment, we'll resend it to you at no additional charge.

Please make sure that the cap of the bottle is shut when storing it in the refrigerator. Repeated opening can cause the humidity inside the refrigerator to collect in the container. 

Yes, we will certainly deliver your parcel. We will resend it to you free of charge.

If you can not find your confirmation email, there might be a few reasons:

1. The Email went to the “Spam” folder.
2. If you are using Gmail, the Email might have gone to “Promotions” or “Social” folder.
3. You might have made a typo while entering your email address while filling our your order.
4. Email server issues occurred.
5. The payment might have not gone through. Therefore your order was not completed.

If you received our order confirmation message in your Spam, Promotions or Social directory, please move the message to your Inbox.
You will then receive the delivery notification in your Inbox folder. This email will contain tracking number and courier information for your Fenben LAB order.

We are very sorry if the email went to your “Spam” folder. Even though this happens extremely rarely, we are doing everything we can so this does not happen again.

For more detailed information, please visit our Shipping page

Enter your country in the provided box to see the estimated delivery time for your shipment with either free or paid shipping options.

We do not offer express shipping in the USA because we ship from the warehouse closest to you. Therefore, our product will reach you as quickly as possible regardless.

For more detailed information, please visit our Shipping page.

In the American market, our Fenben LAB products are distributed on the Amazon platform under the name 'FenLAB'. These are the same products with the original packaging, though the product presentation may vary in the photos. If you purchase our products through the Amazon platform, you can do so with confidence, as we guarantee the quality and authenticity of the FenLAB brand.

See on Amazon

Yes, of course. We stock Fenben LAB products in our warehouses in Vilnius, Lithuania, and Germany. Since both are located within the EU, your order will be shipped quickly and efficiently, ensuring fast delivery across Europe.

Yes, of course. We have Fenben LAB products in our warehouse in Bristol, UK. This ensures that our products can be delivered to you immediately.

Yes, of course. We stock Fenben LAB products in 8 warehouses across the United States. Your order will always be shipped from the warehouse closest to you to ensure the fastest delivery. Our U.S. warehouses are located in: Texas, Georgia, Wisconsin, California, New Jersey, Tennessee, Pennsylvania, and Illinois.

For more detailed information, please visit our Shipping spage.

For more detailed information, please visit our Shipping page.

For more detailed information, please visit our Shipping page.

For more detailed information, please visit our Shipping page

For more detailed information, please visit our Shipping page.

You can find more detailed information on our Shipping page.

Please enter your country in the provided box, and then you will see the estimated delivery time for both free and paid shipping options.

Your satisfaction with our Fenbendazole products is our top priority at Fenben LAB. We stand behind the quality and effectiveness of our products, which is why we offer a 60-day money-back guarantee. This policy allows you to shop with confidence, knowing that you're protected if the product doesn't meet your expectations.

Please be aware that our guarantee only applies to products that are still unopened and unused. If you're not completely satisfied for any reason, and the product remains in its original condition, you may return it within 60 days of purchase for a full refund. If you have any concerns or are dissatisfied for any reason, our customer service team is on hand to help you through the simple return and refund process.