- Provide examples of hormonal contraceptives for men and their pharmacological effects.

1. Testosterone injections: Testosterone is a hormone that plays a key role in male reproductive health. When given in high doses, it can suppress the production of sperm, leading to temporary infertility.

2. GnRH analogs (e.g. goserelin, leuprolide): These drugs work by suppressing the production of testosterone in the testes, which in turn reduces sperm production and can lead to infertility.

3. Progestin-only pills: Progestin is a synthetic form of the hormone progesterone, which can inhibit sperm production and reduce the likelihood of pregnancy when taken consistently.

4. Combination pills (progestin and testosterone): These pills combine progestin and testosterone to suppress sperm production and prevent pregnancy.

5. Hormonal implants: These small rods are inserted under the skin and release hormones that inhibit sperm production and prevent pregnancy.

6. Hormonal injections: Similar to implants, these injections release hormones that suppress sperm production and prevent pregnancy.

Pharmacological effects of these hormonal contraceptives for men may include suppression of sperm production, inhibition of testosterone production, and temporary infertility.