Some booster supplements do not need prescriptions, meaning that it is possible to purchase them even when you don't have a diagnosis. However, it would help if you didn't do so without speaking with a doctor first or locating a reputable source. Many people take Testosterone booster supplements, but each one has its objectives. Some take it to increase physical strength, while others can take it to enhance libido. If you don't have hypogonadism and take testosterone boosters, you may be at risk for sexual dysfunction, increased aggression, or other serious side effects. Your testosterone levels can go high and also cause cardiovascular issues. So it is better t to consult a doctor before buying any testosterone booster supplements.