The three main types of hormone replacement therapies are injections, oral medications, and hormone replacement pellets: 1. Injections Hormone injections can be used to treat low progesterone, growth hormone deficiencies, and low testosterone. Alternatively, males who are experiencing low testosterone or hypogonadism can benefit from gel patches.   2. Oral Medications Oral medications are another treatment option for hormone conditions. Metformin is often prescribed to women with PCOS to lower androgens, decrease blood sugar levels, and improve insulin function. Another oral treatment used to treat hormone imbalances is called levothyroxine. This medication is primarily used to help reduce the symptoms associated with hypothyroidism.   3. Hormone Replacement Pellets Slow-releasing hormone replacement pellets are placed directly under the skin. Both men and women can benefit from this type of hormone replacement therapy. They are typically used to reduce the symptoms of low testosterone in men or to reduce the symptoms of menopause in women.