Are inderal (propranolol) pills and penicillin injection recommended treatment for mild mitral stenosis?

Possibly. Mitral stenosis, depending on the epidemiology of where acquired, is a slowly, but naturally, progressive process that may require some intervention if symptoms or cardiac function are adversely affected. Beta-blockers may be useful to control associated arrhythmia, & antibiotics to avoid development of a valvular infection (endocarditis). Close monitoring by exam & echocardiography is required.
Possibly. Inderol is a potent beta blocker which can help control rhythms. Mitral stenosis can lead to rapid heart rates. Also a slow heart rate gives the heart more time to fill which it needs in mitral stenosis. The tight valve blocks filling of the heart. Antibiotics (usually pills though) are used to prevent the valve from getting infected (endocarditis). This done before procedures and dental visits.

Related Questions

What are possible non-invasive treatments for mitral stenosis with mitral valve area less than 0.85?

Mitral stenosis. Severe mitral stenosis is a mechanical obstructive lesion. It needs to be corrected by surgery or occassionally a catheter based dilation of the abnormal valve. Surgery is generally preferred. Non invasive treatment can not increase the valve area and is limited to slowing the heart rate to allow more time for ventricular filling. This is of limited benefit.

What are the treatments for mitral stenosis?

Mitral stenosis. If severe, mitral stenosis is treated either with balloon valvuloplasty if the valve is not too calcified, or valve replacement.
Surgery. If it's causing symptoms, it requires intervention: either with a catheter (vavlulplasty) or with surgery (commissurotomy or valve replacement, depending on your age and the severity of the valve).