Can tamoxifen help me get rid of my gynecomastia?

Don't do it. Tamoxifen is an anti estrogen prescribed for hormonal dependent breast cancer in females also for prevention of breast cancer. I am not aware of the use of tamoxifen in males. Most gynecomastias are caused by medications. Simply lowering the dosis or stopping them there will be improvement. Tamoxifen is indicated for mastalgia ( not gynecomastia) in females but not in males.
Probably not. It is an anti-estrogen drug which may keep the condition from getting worse, but it probably won't reverse it.

Related Questions

Can you use nolvadex (tamoxifen) to get rid of gynecomastia?

Yes. Although tamoxifen is not fda-approved for this use, multiple studies have been published demonstrating it's benefit treating gynecomastia. It is probably most beneficial early in the development of the disease. If no effect is seen after three months, continuing the drug further is probably not helpful. Read more...
Unlikely. Once the breast tissue has grown and developed into true glandular gynecomastia only surgical treatment is effective. Read more...
Maybe. Nolvadex (tamoxifen) is effective in reducing estrogen driven gynecomastia. It works to prevent better than to treat the problem and is given prophyllactically when men are given Estrogens to treat various disease states. Read more...