Safety Data & Contraindications For Histamine-Halt Inhaler

The Histamine-Halt inhaler is a custom blended inhaler, and as such, not every ingredient listed below will be in your personal inhaler.  Each ingredient has been chosen for it’s antihistamine properties, and in addition many inhalers (depending on what your custom blend is) may also contain constituents that have anti-viral, antibacterial, antiseptic, anti microbial, anti fungal, anti parasitic, anti inflammatory, decongestant and/or expectorant properties.

To Use: First use you may wish to hold nasal inhaler under your nose and take in a few deep breaths. If you find that you are not getting adequate inhalation, then close one nostril while gently inserting the nasal inhaler in the other (you do not need to insert more than 1/4 inch). Do this for one or two breaths in each nostril.  You may repeat this as needed. We find that taking a couple inhalations upon awakening helps to start the day out right. We then keep it handy and use throughout the day when needed. Another quick inhalation after dinner allows us to go about the outdoor evening chores without less allergic reactions.

This personal inhaler contains organic herbal and essential oils on an organic cotton pad. The inhalers are made to order to ensure potency and a longer shelf life.

None of the statements above are approved by the FDA, and are not meant to diagnose or cure any condition, and this product is not intended to diagnose, treat, cure, or prevent any disease.  All information provided here is for educational purposes, and is not intended to be used as a substitute for professional medical advice.

As always, we can not recommend the use of any essential oils (orally, inhalation or dermal) for pregnant women or those attempting to conceive; however, we leave it up to each individual to choose what is right for them.


(lavandula angustifolia) Lavender essential oil has so many benefits it is easier to send you here:

Warnings: Lavender has no known contraindications. There is only a moderate risk of skin sensitization with lavender.

  • For dermal use, the maximum level is 0.1%.

(Eugenia caryophyllata) * Very important to use good quality clove oil, as some can be adulterated with eugenol or clove stem or clove leaf oil.

Clove bud oil is known to have the following beneficial properties: antimicrobial, antioxidant, anti-fungal, antiviral, anti-inflammatory, cytotoxic, insect repellent, anesthetic

This information comes from Phytotherapy Research, March 2007: “The biological activity of Eugenia caryophyllata has been investigated on several microorganisms and parasites, including pathogenic bacteria, Herpes simplex and hepatitis C viruses. In addition to its antimicrobial, antioxidant, antifungal and antiviral activity, clove essential oil possesses anti-inflammatory, cytotoxic, insect repellent and anaesthetic properties.”


  • moderate risk for mucous membrane irritation and skin sensitization
  • may inhibit blood clotting
  • may contain methyleugenol and then can pose a drug interaction hazard
  • may cause embryotoxicity
  • recommended dermal maximum of 0.5%
  • dermal caution – not to use topically on children age 2 or younger
  • ingestion Caution – May intereact with pethidine, MAOIs or SSRIs
  • caution with anticoagulant medication, major surgery, peptic ulcer, hemophilia or other bleeding disorders.

(mentha piperita) – Pepperming essential oil is known for the following benefits and properties: digestive, anti-inflammatory, antiseptic, respiratory and circulation benefits. You can read more here:


  • Due to peppermint containing 40% or more 1,8-cineole, it should not be applied to the face of infants or children, or otherwise inhaled by them. (children under the age of 2 for sure..use judgement for older children)
  • Menthol-rich oils should be avoided by anyone with heart disease or cardiac fibrillation.
  • Can irritate sensitive skin.
  • Drug interaction with felodipine is suspected.

(citrus limonum)

Lemon oil is known to have the following beneficial properties: Ability to treat athlete’s foot, chiliblains, colds, corns, dull skin, flu, oily skin, spots, varicose veins, warts.  [Julia Lawless,The Illustrated Encyclopedia of Essential Oils (Rockport, MA: Element Books, 1995), 56-66.]


  • Cold pressed Lemon Essential Oil is phototoxic.
  • Steam distilled Lemon Essential Oil is not phototoxic.
  • recommended dermal maximum of 2.0% for the cold pressed oil to avoid the risk of a phototoxic reaction. If applied over recommended amounts, avoid sun exposure for 12 hours.
  • NOTE – Avoid topical use of Lemon Oil, regardless of method of distillation, if it has oxidized. (oxidation happens over time)
  • Refrigeration of lemon oil in a dark air-tight container can help reduce the oxidation process and extend the shelf life of your oil.

(thymus vulgaris) aka Thyme(geraniol CT) is a more mild Thyme chemotype and is useful skin products for acne or eczema or for problems of the ear, nose and throat or taken internally for blood infections. It has the following benefits and properties: antiviral, antibiotic, antiseptic, and diuretic.

Warnings: Constituents in Thyme oil may inhibit platelet aggregation (thus reducing blood clotting) so the oral use of Thyme is cautioned in the following circumstances:

  • If taking anticoagulant drugs (aspirin, heparin, warfarin)
  • Breastfeeding mothers
  • Hemophilia
  • Peptic ulcers or Internal bleeding
  • Severe hepatic or renal impairment (liver/kidney failure or impairment)
  • Hypertensive or diabetic retinopathy (vision impairment or loss due to disease of retina)
  • Thrombocytopenia (decreased platelet count)
  • Vasculitis (inflammation of blood vessels)
  • Up to a week before or after major surgery or child birth.

Thyme oil may be choleretic (which means it helps to stimulate the production of bile by the liver)

  • Contraindications when taken orally : Cholestasis
  • Warning when taken orally: Drugs that are metabolized by CYP2B6
  • Caution with hyperthyroidism, since Thyme may also stimulate the thyroid gland.
  • Caution with high blood pressure, since Thyme can be used to increase circulation.
  • Caution for people with allergies to rosemary or mint oils, since Thyme contains many of the same constituents.

NOTE: * Our Histamine-Halt is made with Chamomile Herbal Oil, and as such does not contain the same constituents as the essential oil. We can replace the herbal oil with Chamomile essential oil for those customers who want it.

The benefits and properties of Roman Chamomile are as follows:  antispasmodic, antiseptic, antibiotic, antidepressant, antineuralgic, antiphlogistic, carminative, cholagogue, cicatrisant, emenagogue, analgesic, febrifuge, hepatic, sedative, nervine, digestive, tonic, antispasmodic, bactericidal, sudorific, stomachic, anti-inflammatory, anti-infectious, vermifuge, and vulnerary substance.

Warnings: The safety data and contraindications listed here are for the Chamomile Essential Oil. If you are choosing to use the Essential oil the following applies:

  • Caution when taken orally/dermally/inhalation: Drugs that are metabolized by CYP2D6
  • Caution when taken orally : Drugs that are metabolized by CYP1A2, CYP2C9 or CYP3A4
  • Chamomile contains no known carcinogens
  • NOTE – Avoid topical use of Chamomile Oil if it has oxidized.
  • Refrigeration of Chamomile oil in a dark air-tight container can help reduce the oxidation process.

NOTE: Using chamomile plant or oil may lead to allergic reactions in people who are sensitive to plants from the following families: Asteraceae or Compositae (ragweed, chrysanthemum, daisies, and marigolds) This is why we have chosen to create and use a Chamomile herbal oil for this product.

(Foeniculum vulgare) Fennel essential oil is known for the following benefits and properties: Bruises, cellulitis, flatulence, gums, halitosis, mouth, nausea, obesity, toxin build-up, water retention.


  • Contraindications orally/dermally/inhalation: Pregnancy, breastfeeding, endometriosis, estrogen-dependent cancers, children under five years of age.
  • Those on diabetes medication or having diabetes, on anticoagulant medication, major surgery, peptic ulcer, hemophilia, other bleeding disorders should exercise caution when taking orally.
  • Maximum adult daily oral dose: 54 mg
  • A recommended dermal maximum of 1.8%, is based on 6.5% estragole content
  • Oral and dermal limits of 0.05 mg/ kg and 0.12%.

(Origanum vulgare) Oregano essential oil is known for the following benefits and properties: antiviral, antibacterial, antifungal, antiparasitic, antioxidant, anti-inflammatory, digestive, emmenagogue and anti-allergenic substance.

Warnings: Due to its very high thymol content, oregano oil is considered dermocaustic, (hot oil) and it is a mucous membrane irritant. You should never apply oregano oil undiluted (Neat) to skin or to mucous membranes.

If you are allergic to plants from the Lamiaceae family (mint, lavender, sage, and basil) you should avoid oregano oil.

Pregnant or nursing women should not use oregano oil topically or orally, as it can encourage blood circulation within the uterus, which deteriorates the lining that encompasses the fetus within the womb. The constituents in oregano oil have potential to induce menstruation, and thus is not advised for pregnant women or those attempting to conceive.

(Echinacea purpurea) is known for the following benefits and properties: boost the immune system, prevent cancer, eliminate bacterial and viral infections, reduce inflammation, improve skin conditions like eczema and psoriasis, protect respiratory health, speed healing and recovery times, manages allergies, boost oral health, and prevent recurrent infections like ear infections.

Warnings: Some may find they have allergic reactions to echinacea, so stop using if you notice any allergy related symptoms. If you are ingesting echinacea and are taking other painkillers, your liver can be negatively impacted. Headaches and stomachaches have occurred with ingesting echinacea, however, the overall benefits of echinacea far outweigh the potential negatives. No other known hazards or safety concerns.

Data gathered during our research and studies, from some of the following sources:

  • Tisserand, Robert, and Rodney Young. Essential Oil Safety: A Guide for Health Care Professionals. Edinburgh: Churchill Livingstone, Elsevier, 2014. Web.
  • “Aromatherapy School and Courses – Aromahead Institute School of Essential Oil Studies.” Aromatherapy School and Courses. N.p., n.d. Web. 10 Jan. 2016.
  • “National Association for Holistic Aromatherapy.” NAHA/safety. N.p., n.d. Web. 25 Jan. 2016.
  • Worwood, Valerie Ann. The Complete Book of Essential Oils and Aromatherapy. San Rafael, CA: New World Library, 1991. Print.
  • The U.S. National Library of Medicine: PubMed.