Can you place test cream on a males nipple to get rid of gynecomastia? I took a supplement that gave me mild gynecomastia

No. There's no topical cream that will cure or correct gynecomastia. Surgery is required. Check out www.Gynecomastia.Org - a great forum.
Gynecomastia. There are some supplements, including steroids and marijuana that can cause gynecomastia. Sometimes if you stop taking them then the gynecomastia resolves. If it doesn't the surgery is the only solution.
No, . No, there is no cream that will get rid of gynecomastia. I would advise stopping the supplement if you have not already done so. Weight loss if you are overweight may help. If your gynecomastia persists please see an endocrinologist or plastic surgeon for evaluation.