Topical dosage of Lavender: 3 drops (108 mg) of lavender. This is for a different use, but it is a reference point.
Lavender oil is dangerous by internal use
Tea tree oil safety data - From this, tea tree oil has been applied for treating a lot of problems. See section: 'applied to the skin'. The topical dosage is 25% to 50% tea tree oil to water or carrier oil.
From one of these three links, it says they don't know of any contraindications with lavender or tea tree oil with other herbs, drugs, etc. For tea tree oil and lavender it says don't use too much to irritate the skin. I don't know if BO has or would have contraindications on its own.
You can always use the search at U.S. National Library of Medicine, it includes encyclopedic entries, and entries on herbs and vitamins. There are entries, but not any encyclopedic entries on Bovine Ovary from searching it.
Lavender oil is dangerous by internal use
Tea tree oil safety data - From this, tea tree oil has been applied for treating a lot of problems. See section: 'applied to the skin'. The topical dosage is 25% to 50% tea tree oil to water or carrier oil.
From one of these three links, it says they don't know of any contraindications with lavender or tea tree oil with other herbs, drugs, etc. For tea tree oil and lavender it says don't use too much to irritate the skin. I don't know if BO has or would have contraindications on its own.
You can always use the search at U.S. National Library of Medicine, it includes encyclopedic entries, and entries on herbs and vitamins. There are entries, but not any encyclopedic entries on Bovine Ovary from searching it.