A malignant tumor is one of the most common oral tumors a dog can acquire. There are three types: 1  Squamous cell carcinomas. 2  Fibrocarcinomas. 3  Malignant melanomas.
If metformin is prescribed for a woman with PCOS to help restore a regular, normal menstrual cycle, metformin can work within 4 to 8 weeks. In addition, the stabilized levels of insulin may affect the other hormones in a womanâs body, and reduce other symptoms of PCOS.
I am on 2000mg of metformin and it took me 3 months before my menstrual cycle became regular.I have pcos which caused me to not have my menstrual for month's. But since I've been on the metformin I've been doing really good...it just take a little bit longer sometimes.