Do not use Intrinsa  if you are allergic (hypersensitive) to testosterone or any of the other ingredients of Intrinsa.  if you know that you have had in the past, currently have, or think that you might have, breast cancer or any other cancer which your doctor has described as being caused or stimulated by the female hormone estrogen, also called ‘ estrogen-dependent’ cancers.  if you have other conditions that your doctor may consider not appropriate for the use of estrogen and/ or testosterone.