* Though birch essential oil is non-toxic in standard aromatherapeutic dosages (highly diluted), it is a powerful oil that must always be diluted. It contains methyl salicylate, the active ingredient in aspirin. Do not take birch essential oil internally.
* Sweet birch oil should not be used near open wounds or mucous membranes. Because the smell is sweet and resembles wintergreen-type candies, it is especially important to keep this, like all essential oils, out of reach of children.
* Robert Tisserand advises that Sweet Birch is contraindicated with anticoagulant medicines, major surgery, hemophioia, other bleeding disorders. Pregnancy, breastfeeding, children. Salicylate sensitivity, including ADD/ADHD, gastroesophageal reflux disease (GERD). Inhibits blood clotting, toxicity issues, high doses may be teratogenic. Maximum dermal level 2.5%. Topical application can potentiate the anticoagulant effect of warfarin, leading to possible internal hemorrhage.
==Uses of Sweet Birch oil==
* Massage Oil: Add a drop to your massage oil and rub into fatigued muscles and areas.