Caffeine: Caffeine pills are one of the best diet pills that work. They’re a great way to naturally raise the body’s metabolic rate. This is the rate you burn calories when at rest. A higher rate means faster weight loss- assuming you are eating at a calorie deficit. A natural stimulant, caffeine pills are a great way to aid your weight loss attempt. However, avoid overdosing as too much caffeine can cause nausea, jitters and a racing heart. In extreme cases it can even be deadly – so only consume recommended dosages. Caffeine also acts as an appetite suppressant, so is useful for staving off hunger cravings when you’re on a calorie-restricted diet.

Capsicum: Capsicum is the ingredient in chilies that make them hot. The more of it there is, the hotter the chilli. Research has been conducted that found capsicum is a great way to regulate calorie consumption. When you consume it, you’re less likely to consume a lot of food – which helps aid your weight loss diet. Another study found that capsicum heightens fat oxidation and counteracts the slowdown in metabolism sometimes found in a calorie restricted diet.

Bitter orange: Citrus Aurantium, known as bitter orange, is another herbal remedy that can help aid your weight loss efforts. It provides a stimulant like effect and should only be consumed in small doses. Like other herbal remedies, it works by slightly raising your energy levels and suppressing appetite. However, due to its ability to raise internal temperature it can be dangerous – so consult your doctor before taking.