Tinctures are typically created using a blend of cannabis strains - this means it can contain more than one type of flower, including indica, sativa, or even CBD strains.
If a product is "Strain-Specific" and only contains one strain, it will normally be labeled on the product. (For example, a strain-specific product may say "Blue Dream" on it, indicating that it is only made with Blue Dream flowers). Be sure to read the product labels thoroughly, however, if you do not see any strains listed, please do not hesitate to discuss the contents with your local pharmacist. You may also be able to find more information on the product by visiting the website of the manufacturing company.
I hope this information helps! :-)