Senna is an herb that has a mild stimulative effect (it's a laxative, but natural... for the rest of your life. Coffee is another natural stimulant to the bowels.
The product I think works...
Bioidentical thyroid preps are out there.. Amrour Thyroid is one... derived from porcine sources. Compounding pharmacies can make a T4/T3 prep from bioidentical hormones (bHRT). For more read my stuff on the Internet about