Herbal Tinctures: Getting or Giving the Right Dose

tincturesHerbal tinctures are the backbone of Western herbalism.  Generally, herbal tinctures are made from herbs extracted with a combination of alcohol and water, although glycerine and vinegar can also be used.  They are widely available, economical to produce and use, compact enough to stock in considerable variety and have a good shelf life. They can be combined and are convenient to take.   Dried herbs start to loose their potency after 6 months yet tinctures can last up to 10 years or more.  As a primarily Traditional Chinese Medicine herbalist, I mostly rely on concentrated decoctions, but in some cases when I am working with aerial parts of  plants, or herbs that could benefit from the effects of alcohol, increasing circulation, tinctures are more appropriate.

This posting is based on tinctures made using the weight to volume method.

Understanding dosage rates are important in achieving therapeutic outcomes.  I find that if someone isn’t responding to an herbal formula then analyzing their dosages can be helpful.

As a starting point most commercially available herbal tinctures indicate the weight to volume ratio.  For example, if the label states that it is a 1:5 extraction, this indicates that 1 gram (weight) of herb is equivalent to 5 milliliters (volume) of liquid.

A tincture formula will state the herb and the ratio of herb (by weight) to solvent (by volume), and the % alcohol (ethanol) in water.

Having this information is crucial in understanding the amount of herb that you are recommending or taking per dose.  Furthermore, this information is required by law to appear on the label. along with the serving size suggestion, which we will discuss further on.

In trying to communicate dosage equivalencies I have developed the following chart based on weight to volume ratios.  The side column indicates the common ratios and the top row indicates the volume of tincture consumed (in milliliters).  For example, if you took 1 milliliter of liquid made at a ratio of 1:2 then you would be ingesting a half of a gram of herb.

Tincture Dosage Equivalencydosage ratioSuggested Use:  Different companies have different suggested dosage rates.   Some companies suggest taking a dropper full and others recommended taking a range of drops as a serving size, for example, 20-60 drops.  When a dropper full is suggested the amount consumed depends on the size of the bottle and dropper.  When the suggested dosage on the bottle indicates a number of drops per dose, the amount consumed depends on the viscosity of the liquid.  Since this can change from one company to the next the best we can do is to have an understanding of some equivalents  recognizing that this is an approximation:

  • 20 drops = 1 ml
  • Dropperful from a one-ounce bottle—30 drops
  • Dropperful from a two-ounce bottle—40 drops
  • 5 ml = 1 teaspoon
  • A one-ounce bottle holds approximately 30 ml, 6 teaspoons, 30 dropper full, and 1,000–1,200 drops.

For example if using the suggested serving of 40 drops, and 20 drops = 1 milliliter, then you are taking approximately 2 milliliters of a 1:5 tincture and getting approximately .4 grams of herb per dose.  Most commonly it is recommended to take the tincture two to three times a day, so using this same example you  would be consuming between .8 and 1.2 grams of herb per day. Knowing the actual amount of herb that is recommended on a daily basis will help with putting the this into context.  Below is a partial list of recommended daily dosage of some common herbs.

Examples of dosages of some common herbs*:

Herb Daily Dosage
Angelica archangelica 3-9 grams
Ashwagandha 3-12 grams
Astragalus 6-15 grams
Black Cohosh 3-9 grams
Burdock 3-10 grams
Codonopsis 9-30 grams
Dandelion 9-30 grams
Dang Gui 3-15 grams
Echinacea 3-9 grams
Grindelia 3-6 grams
Hawthorn Berry 6-12 grams
Lemon Balm ½-6 grams
Motherwort 10-30 grams
Oregon Grape Root 3-9 grams
Passion flower 3-9 grams
Skullcap 3-9 grams
St. Johns Wort 3-9 grams
Uva Ursi 3-6 grams
Valerian 3-6 grams

* Planetary Herbology, Michael Tierra

In some circles there has been a discussion that the use of alcohol potentizes the action of the herbs, therefore less herb is needed.  Furthermore, the synergistic action of herbal combinations or formulas also increases effectiveness requring less herb.  These are great discussions but I work with aspiring herbalists who are often confused as to how to determine or convert tinctures to actual grams of herbs.  I hope that this helps and would encourage you to take a moment to actually consider that you might not be taking enough herbs to be effective.

Related blog post:  https://herbalgoddessmedicinals.wordpress.com/category/herbal-preparations/

Up coming blog:  How to make tinctures using the weight to volume method.