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You're in the right place. Browse our frequently asked questions to find clear, helpful answers about Harker Herbals products, ingredients, usage, online ordering and more. Or get in touch if you need a little extra guidance. We're here to make natural wellness simple.

Top FAQ

What makes Harker Herbals formulations different?

Our formulations are based on traditional herbal knowledge combined with modern quality standards. We use whole-plant extracts rather than isolated active compounds, supporting a more balanced herbal profile. Our products are developed in New Zealand with a focus on quality, traceability, and traditional herbal practice.

Why do you use whole-plant extracts?

We use whole-plant extracts rather than isolated active compounds, supporting a more balanced herbal profile.

Where are your products developed?

Our products are developed in New Zealand with a focus on quality, traceability, and traditional herbal practice.

Are your products natural?

We prioritise high-quality, naturally derived ingredients, including herbal extracts, vitamins, and minerals selected to support wellbeing.

Are your products safe to use?

Our products are made in a GMP-certified facility and follow strict quality and safety standards. Always use as directed and consult a healthcare professional if needed.

How do I choose the right product for me?

Start with your main wellbeing goal. Each product supports a specific need. You can explore product pages or contact our team for guidance.

Can I take multiple Harker Herbals products together?

Yes, many products can be used together. We recommend focusing on a few key goals at a time.

How long does it take to notice results?

This varies by individual and product. Some people notice changes quickly, while others see results build over time with consistent use.

What is a therapeutic dose and why does it matter?

A therapeutic dose refers to the amount of an ingredient used to meaningfully support the body, based on traditional use and modern formulation practices. Many products on the market contain very small amounts of active ingredients, which may not deliver noticeable support. We focus on formulating at levels that align with established herbal practice, so our products can be used confidently as part of a daily wellness routine.

Where are your products made?

Our products are made in New Zealand in a GMP-certified facility using globally sourced ingredients that meet strict quality standards.

How do your formulations ensure effective ingredient levels?

We carefully design our formulations to include meaningful levels of key ingredients, rather than just small amounts for label presence. This approach is guided by traditional herbal knowledge, product purpose, and quality considerations. Every formulation is balanced to support consistency, usability, and overall product integrity.

I’m not sure which product is right for me. Can you help?

Yes. If you’re not sure which product is right for you, email us at hello@harkerherbals.com and our qualified naturopaths can help guide you to the most suitable option for your needs.

Ingredients & Formulations

Where do you source your ingredients?

We source from trusted suppliers from around the world who meet strict quality standards.

Do your products contain allergens?

Common allergens are clearly listed on product label and page.

Do you use artificial preservatives?

We prioritise natural or nature-identical preservatives where appropriate.

Do your products contain sugar?

Some of our products contain naturally occurring sugars from herbal extracts or added ingredients such as glycerine or natural sweeteners. The amount varies by product, so please check the label or product page for specific information.

Are your products vegetarian or vegan-friendly?

Yes our US range of products use only plant-sourced and mineral ingredients.

What is the shelf life?

Shelf life varies by product and is listed on packaging.

Do you use synthetic ingredients?

We do not use any synthetic ingredients - all ingredients are from a natural source - some may have been processed into different forms but are still from a natural source.

Are your ingredients tested?

Yes, ingredients are tested to ensure quality, purity and consistency.

How should ingredients be stored?

Store in a cool, dry place away from direct sunlight. Always read the label for storage directions.

What makes your ingredients high quality?

We prioritise high-quality ingredients sourced from trusted suppliers who meet strict standards for identity, purity, and consistency. Each ingredient is selected based on its suitability for the formulation, with a focus on its synergy with the other active ingredients, whilst maintaining integrity from sourcing through to finished product.

How do you source your herbal ingredients?

Our herbal ingredients are sourced from established growers and suppliers with expertise in botanical materials. We consider factors such as origin, growing conditions, efficacy, purity, and processing methods to help ensure the quality and consistency of each ingredient used in our formulations.

Do you test your ingredients before use?

Yes, ingredients are assessed to confirm they meet quality and safety standards before being used in production. This helps ensure consistency across batches and supports the overall quality of the finished product.

Quality & Testing

Are your products made in GMP facilities?

Yes, products are manufactured in facilities operating to Good manufacturing Practice (GMP)

What is GMP facility?

A GMP facility is a production environment designed and operated to meet strict "Good Manufacturing Practice" standards, ensuring products like pharmaceuticals, medical devices, and food are consistently produced and controlled for quality, safety, and efficacy. It uses validated processes, controlled environments, and rigorous documentation.

How do you ensure product quality?

We combine carefully selected raw materials with strict quality controls, including supplier verification, ingredient testing, and controlled manufacturing processes.

Do you test finished products?

Yes, Harker Herbals products undergo testing as part of our quality assurance programme, including raw material verification and finished product checks where appropriate.

Are batches consistent?

We use controlled manufacturing processes to maintain batch-to-batch consistency, including carefully selected raw materials and quality checks throughout production.

Do you test for contaminants?

Yes, all products are tested to meet safety and quality standards.

What standards do you follow?

We follow recognized manufacturing and quality standards, such as GMP.

Are your suppliers audited?

We work with reputable suppliers who meet strict quality requirements. All of our suppliers are validated via an internal screening process.

Do you trace ingredients?

Yes, we maintain traceability across our supply chain.

Are your products certified?

While not all products carry third-party certification, our manufacturing follows recognized industry standards such as GMP

How do you ensure safety?

Through sourcing, testing, and controlled manufacturing processes.

How do you ensure consistency between batches?

We follow controlled manufacturing processes to maintain batch-to-batch quality. This includes careful sourcing, standardised formulations, and quality checks throughout production.

Why does ingredient sourcing matter for product quality?

The quality of the final product starts with the quality of the ingredients. Variations in sourcing, handling, and processing can impact consistency. By working with trusted suppliers and maintaining strict quality standards, we aim to deliver reliable products that customers can trust.

Where are your products manufactured?

All of our products are made in New Zealand. Our liquid products are primarily made at our Hastings facility, with other formats are produced by approved New Zealand Manufacturers.

Safety & Usage

Are your products safe to use?

Our products are made to high quality and safety standards. Always use as directed on the label.

Can I use your products every day?

Yes, most products are suitable for daily use when taken as directed.

Can I take multiple products together?

Many products can be used together. Always use the label and use as directed. If symptoms persist, see your healthcare professional.

Who should not use these products?

If you are pregnant, breastfeeding, or have a medical condition, check the label and consult a healthcare professional before use. Always read the label and use only as directed. If taking prescribed medication, consult your health professional before taking our product. If symptoms persist, seek professional medical advice.

Can I take your products if I’m on medication?

Always read the label and use only as directed. If taking prescribed medication, consult your health professional before taking our products. Some herbs and ingredients can interact with different medications and affect how they work. In particular, some herbs in our tonics and syrups may not be suitable alongside blood-thinning medication.

Can I take Harker Herbals products on an empty stomach?

This depends on the product. Refer to label and always use as directed.

Are there any side effects?

Our products are generally well tolerated when used as directed. Discontinue use if you experience discomfort. If you are unsure, see your healthcare professional.

How should I take your products?

Follow the directions on the label for dosage and timing. Always use as directed.

Can I use your products long-term?

Many products are designed for ongoing use as part of a wellness routine. Always read the label and use as directed.

My product tastes a bit different to the last one I bought. Is there something wrong with it?

Not usually. Because our products are made with natural ingredients, there can be seasonal variation that changes the flavor slightly from batch to batch. This is a normal part of genuine natural products.

Children's Range

Which children's products are available in the US?

The US Children's range includes Children's Deep Lung Support Syrup, Children's Ear, Nose & Throat, Children's Immune Daily, Children's Chest Night, Children's Immune & Wellbeing, Children's Calm & Sleep.

How do I choose the right product for my child?

Choose the product that best matches your child's wellness needs.

Can children's products be taken together?

Some products may be used together depending on your child's needs. Always read the label first.

Which products are suitable for children?

We offer specific products formulated for children. Check age guidance on labels.

What age can children start using your products?

Age suitability varies by product. Always follow label instructions.

Can I give adult products to children?

We recommend using products specifically formulated for children.

How should I give products to my child?

Follow dosage instructions and consider mixing with food or drink if suitable.

Can I mix products with juice or food?

Yes, many products can be mixed for easier consumption.

What if my child doesn’t like the taste?

Try mixing with water, juice, smoothies, or food where appropriate.

Can children take products daily?

Many children’s products are designed for continuous use when taken as directed.

Are your children’s products gentle?

Our children's products are gentle acting and are formulated with children in mind used as directed.

Which products support school routines?

Some products are commonly used as part of daily routines during school terms.

Should I consult a professional?

If unsure, consult a healthcare professional before giving products to children.

Ordering & E-Commerce

How long will it take for my order to arrive?

Your order will be fulfilled and delivered by Amazon. You will receive tracking information from us with your Amazon tracking information as soon as your order has been processed. Delivery times may vary depending on your location.

How much is shipping?

Shipping is calculated at the checkout.

Can I track my order?

Yes, tracking details are provided once your order is dispatched.

I made a mistake with my order. Can I cancel?

Once your order has been submitted, we can’t cancel or amend it. However, you may be able to return the product in line with our Shipping & Returns policy.

What is your return and refund policy?

If you have any concerns about your product, please email hello@harkerherbals.com. Our team may ask you to return the product for further investigation and, if the product is found to be faulty, provide a refund or replacement. Please refer to our Shipping & Returns policy for full terms and conditions.

Do I need an account to order?

No, you can checkout as a guest or create an account.

How do I use a discount code, and can I add it after I submit my order?

Enter your discount code at checkout before completing your purchase. Once your order has been submitted, we can’t cancel or amend it, including to add a forgotten discount code. Discount codes also do not apply to bundle offers or already discounted items.

Do you accept returns for products bought elsewhere?

We don’t accept returns for products purchased through a third party. Please contact the retailer you bought from and they will be able to help you directly.

How can I contact support?

You can contact us at hello@harkerherbals.com for order support or general questions.

Contact & Support

How can I contact support?

You can contact us at hello@harkerherbals.com for order support or general questions.