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Authentic Chinese Herbal Medicine since 1969
Plum Flower® Herbal Teas

Manufacturing


Commitment to Quality

During the past 40 years, we have been committed to providing products of the highest quality. We have carefully chosen exceptional manufacturing partners to create our products. Starting materials are tested and species verified, then processed according to strict manufacturing specifications. Extensive laboratory testing throughout the process confirms quality standards are met, and results are routinely verified by laboratory testing conducted in the US. The quality, processing and testing standards of our products are based on requirements outlined in the Pharmacopoeia of the People’s Republic of China to ensure that our products are medicine grade. Our commitment to quality in every aspect has resulted in safe, high quality products you and your patients have trusted since 1969.

Product Excipients

Mayway is committed to using as few food additives in the preparation of our products as possible. However, we are sometimes compelled to use excipients in certain products to ensure their quality and effectiveness. Excipients are ingredients that aid in the manufacture of a quality medicinal-grade product, often facilitating optimal stability, dissolution, and absorption, and can help to form, stabilize and protect active substances.
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In China, the medical traditions, standards and practices are unique and quite different from the West. There, both herbal preparations and drugs are used and often used together throughout the mainstream medical system. Our manufacturers in China reflect the character and demands of this market and are equipped and licensed to make both pharmaceutical and herbal products. They utilize their scientific expertise, skills and experience in selecting the best methods for manufacturing our products.

The excipients used in making our products may include one or more of the following, and are listed under “Other ingredients” on individual product labels:

Plum Flower® and Minshan® Teapills
Activated carbon: Used in coating pills for consistent color, texture and smoothness.
Botanical wax: Used in coating pills as a lubricant to increase ease of swallowing and to preserve ingredients from deterioration from moisture in the air.
Maltose: A binding agent made from disaccharides.
Talcum: Used in coating pills as a glidant (flow agent) to promote the smooth flow of ingredients.

Plum Flower® Tablets
Botanical wax: Used in coating pills as a lubricant to increase ease of swallowing and to preserve ingredients from deterioration from moisture in the air.
Castor Oil: Used to emulsify certain active ingredients to improve bioavailability.
Dextrin: A hypoallergenic, pharmaceutical-grade binding agent derived from cornstarch.
Honey: A binding agent.
Hypromellose: Used in coating tablets as a lubricant to increase ease of swallowing.
Magnesium stearate: Used for its lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of the extracts into solid tablets.
Microcrystalline cellulose: A naturally derived excipient commonly used for its compressibility and carrying capacity. It creates tablets that are extremely hard and stable, yet able to disintegrate rapidly. It is also used as an anti-caking agent and emulsifier.
Peach gum: A complex mixture of saccharine and glycoprotein made from tree sap used as a stabilizer and binder.
Povidone K30: A binding agent; not absorbed by the body.
Silicon dioxide: Used as a glidant, or flow agent, to prevent ingredients from sticking together. Also commonly used in processed foods for its anti-caking properties.
Sucrose: Used in coating tablets as a lubricant to increase ease of swallowing.
Sodium starch glycolate: Talcum: Used in coating pills as a glidant (flow agent) to promote the smooth flow of ingredients.

Plum Flower® Single Herb Extract Powders
Dextrin: Used as an anti-caking agent to curb clumping.

Plum Flower® Capsules
Dextrin: Used in coating pills as a glidant (flow agent) to promote the smooth flow of ingredients.
Magnesium stearate: Used as a glidant (flow agent) to prevent powder from sticking together, ensuring a consistent and stable mixture.

Star Ring® Infusions
Cane sugar: Used as a sweetener and binder.

Pan Gao Shou® Liquid Extracts
Benzoic acid E210: Used as a preservative.
Ethylparaben E214: Used as a preservative.

Raw Material Selection

Page from Pharmacopoeia of Chinese MedicineOur commitment to quality starts from the very beginning. First, we begin with the correct species and the correct herb part. All herbs, whether Plum Flower® Premier Quality™ Chinese Herbs or constituents in our Plum Flower® products, are the officially validated species as listed in the Chinese Pharmacopoeia or other government accepted Materia Medicas.
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This dedication to accuracy in our raw material selection helps ensure efficacy, and more importantly, safety, as substituted herbs may cause harmful side effects. Herbs are sourced from their indigenous regions, ensuring authenticity and quality. Upon receipt, herbs are inspected to ensure correct species identification, proper maturity, and quality before they can be used in our products.

 

Teapill Manufacturing

Condenser for concentrating herb formulasThe manufacturing of a teapill begins with the decoction of a formula at a low, precisely controlled temperature. Extractors are stainless steel, vacuum-sealed chambers, and this combination of low temperature extraction and vacuum–sealed container ensures that no active ingredients or essential oils are lost when released during the decoction process.
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Essential oils are lifted up by the steam within the extractor and collected for later addition. The extracted liquid is pumped into heated condensers to further concentrate into a paste. The paste is blended with one or more powdered herbs chosen from the original formula to form a herbal dough. The dough is cut into small balls, after which a small amount of talcum (Hua shi) and activated carbon may be added for smoothness and consistency on the pill exterior. The balls are spun into our superior quality teapills, and coated with a fine layer of edible wax to for easier swallowing and to help naturally preserve freshness.

Finished batches of teapills are tested for various quality assurance parameters including active ingredient constituents, moisture content, disintegration time, heavy metals (lead, arsenic, mercury, cadmium) and microbial contamination. These tests are performed on every batch of finished product. Following extensive in–house testing, heavy metal testing on random batches is conducted again at third party accredited labs to confirm results and to ensure that our standards of purity and safety are met.

 

Plum Flower® Premier Quality™ Chinese Herbs

Bag of Plum Flower Premium Quality Chinese herbsAll Plum Flower® Premier Quality™ Chinese Herbs are the officially validated species as listed in the Chinese Pharmacopoeia or other government accepted Materia Medicas. Herbs are sourced from their indigenous regions, ensuring geo-authenticity and quality, and usually come to us direct from the growers and harvesting co–ops. Upon receipt, each herb is inspected to ensure correct species identification, proper maturity, and quality.
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Inspection is conducted by highly trained staff using macroscopic, microscopic, and sometimes thin layer chromatography (TLC) means to confirm species. Herbs are tested also for sulfur dioxide residues and for certain pesticide residues to ensure safety and quality.

Plum Flower® Premier Quality™ Chinese Herbs are processed according to Official PRC Pharmacopoeia and Materia Medica methods to reduce toxicity, modify herb characteristics, and to enhance efficacy. Further processing may include cutting (by machine or hand), steaming, and drying. Proprietary methods have been developed to avoid the typical manner of preserving herbs with sulfur dioxide fumigation and other preservatives. The processed and prepared herbs are vacuum packaged and nitrogen injected, either in between the double bags, or into the bag if singly bagged, to naturally preserve freshness.

Finished batches of Plum Flower® Premier Quality™ Chinese Herbs are subjected to over 15 tests for quality assurance including species verification, moisture content, heavy metals (lead, arsenic, mercury, cadmium), and microbial contamination. They are also tested for certain pesticide residues. These tests are performed on every batch of finished product and can be verified and traced by the batch number on every package or bottle.

 

Tablet Manufacturing

The manufacturing of a tablet begins with the decoction of a formula at a low, precisely controlled temperature. Extractors are stainless steel, vacuum-sealed chambers, and this combination of low temperature extraction and vacuum–sealed container ensures that no active ingredients or essential oils are lost when released during the decoction process.
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Essential oils are lifted up by the steam within the extractor and collected for later addition. The extracted liquid is pumped into heated condensers to further concentrate into a paste. The paste is blended with one or more powdered herbs chosen from the original formula to form a herbal dough. This dough is then pressed into shape with carefully controlled pressure to ensure appropriate dissolution rate and absorption time when ingested. Various excipients are also used when necessary to ensure consistent quality.

Finished batches of tablets are tested for various quality assurance parameters including active ingredient constituents, moisture content, disintegration time, heavy metals (lead, arsenic, mercury, cadmium) and microbial contamination. These tests are performed on every batch of finished product. Following extensive in–house testing, heavy metal testing on random batches is conducted again at third party accredited labs to confirm results and to ensure that our standards of purity and safety are met.

Extract Powder Manufacturing

Base of three-story spray drying tower, openThe manufacturing of an extract powder begins with the decoction of a single herb or formula at a low, precisely controlled temperature. Extractors are stainless steel, vacuum-sealed chambers, and this combination of low temperature extraction and vacuum–sealed container ensures that no active ingredients or essential oils are lost when released during the decoction process.
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Essential oils are lifted up by the steam within the extractor and collected for later addition. The extracted liquid is pumped into heated condensers to evaporate excess water until the extract reaches an ideal density. The concentrated liquid is pumped to a spray dryer, where the liquid is atomized into a mist and introduced into the spray–drying tower, within which is a helix of hot air. As the herbal mist makes contact with the heated air, the water content evaporates, and the solids in the extract become small particles and spiral to the bottom of the tower in a matter of seconds.

Individual herbs can vary significantly in the amount of dissolved solids they yield during extraction. Many do not have the needed substance to form a powder, and our single herb extract powders contain a pharmaceutical-grade, non-GMO corn-based dextrin when necessary.

It is important to note that our formula extract powders do not contain any excipients. They are spray-dried directly from the condensed herbal decoction, and the resulting powder is the natural yield of the formulation

Individual herb extract standards are set by a small committee within the Quality Control Department, which has developed optimal production guidelines for each herb or formula by creating micro-batches in a laboratory environment.

Each batch of finished powder is tested to our quality assurance standards for moisture content, dissolution, heavy metals (lead, arsenic, mercury, cadmium) and microbial contamination.

Following extensive in–house testing, heavy metal testing on random batches is routinely conducted at third party labs to confirm results and to ensure that our standards of purity and safety are met.

Capsule Manufacturing

Generally, capsule products are made by compacting powders or granules into gelatin or vegetarian capsules. A fine selection of Chinese herbal supplements is available in the Plum Flower® Capsule line. All capsules used are vegetarian and the ingredients are natural yield extract powder or a combination of natural yield and standardized extracts.

Infusion Manufacturing

Infusions are herbal extracts of single herbs or formulas manufactured similarly to extract powders, but made into a granule rather than powder. Infusions contain sugar, in amounts ranging from 7–40% depending upon the formula.
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This medium makes them more palatable, easy to administer, and simple to reconstitute into a tea when mixed with hot water. Many of the infusions offered by Mayway come from the Guangzhou Qixing Pharmaceutical Co. Ltd., an internationally GMP certified manufacturer and the proud producer of Star Ring® Brand.

External Use Manufacturing

Mayway distributes a selection of plasters, liniments, ointments and creams. However, as we do not import these products directly, manufacturing information is limited to what is printed on or contained with the product itself.