Hundreds of weight loss supplements and diet pills available over the counter contain L-tyrosine, an amino acid that can help elevate the mood, and even helps the major neurotransmitters stay in balance. It can be taken alone in supplement form, but is already found in foods such as fish, oatmeal, red meat, and dairy products. L-tyrosine may be especially valuable for dieters who may not be getting enough nutrients from a low-calorie diet. Since most diets designed for weight loss do require smaller portions of all foods, supplementation may be a way to maintain good health. Still, long-term use of L-tyrosine may put your health at risk; if your diet pills or other suppleents contain L-tyrosine, here's what you need to know:

How L-Tyrosine Works

L-tyrosine helps keep hormone levels in balance, and is also responsible for the relase of the human growth hormone. This can be especially valuable for bodybuilders who are interested in increasing muscle mass, and the conversion of protein from the diet into energy can be much more efficient.

L-tyrosine is produced from phenylalanine, another important amino acid. It can help reduce fatigue and boost the recovery rate after a workout. It may also help alleviate stress, and make it easier to work out for extended periods of time.

Diet Pills and Supplements That Contain L-Tyrosine

Some of the most common diet pills and supplements on the market contain a significant amount of L-tyrosine. You can now find it on the ingredients list on:

• Thermogenic fat burners

• Some appetite suppressants

• Energy enhancers

• Protein bars

• Protein powders and shakes

• Sports and energy drinks

Natural sources of L-tyrosine are preferred over synthetic supplements, simply because of absorption and synthesis rates. The best foods that can increase L-tyrosine levels in the body include:

• Oatmeal

• Seafood

• Red meat

• Poultry

• Wheat

L-tyrosine in a pure form can also be added to fruit smoothies, protein shakes, and other liquid foods for rapid absorption.

Is L-Tyrosine Supplementation Safe?

There is still an ongoing debate about the effectiveness and actual value of L-tyrosine supplementation. Some health experts argue that a balanced diet should supply enough L-tyrosine naturally and supplementation would not be necessary. Bodybuilders and athletes still do take L-tyrosine supplements to improve performance and overall health. However, too much of this amino acid may have adverse side effects, and the overall effects can diminish over time.

Bottom Line: L-tyrosine supplements are available in natural forms, but the best way to get enough in the diet is to simply eat more foods such as meat, oatmeal, and wheat products. However, if you are cutting back significantly on various foods in the diet, or simply working out more than usual, L-tyrosine may be a valuable supplement to add to your daily nutrition plan.

As with all supplements and dietary changes, consulting with a physician or nutritionist is recommended. If you are taking L-tyrosine supplements for extended periods of time, having a professional monitor your health is a wise choice.