L-Tyrosine: Review Of Its Health Benefits and Side Effects

With all the excitement that we see these days about Genf20 Plus, I was understandably curious about how it worked. While, just anyone else, I’m deeply interested in the anti aging claims if Genf20 Plus, nevertheless I wanted to be sure that Genf20 Plus was perfectly safe to use. So I went out onto the internet and researched its ingredient, and then I looked into what each ingredient was like, including the reasons why it was included in the Genf20 Plus formula, that is to say, what benefits it confirms, and the role it has to play in limiting the aging process.


And of course, I did a lot of research into the dangers and complications each ingredient might pose, including the danger of serious side effects. You see, I wanted to be sure that this supplement was perfectly safe, and indeed I’m very careful about any medication that my doctor may prescribe or any supplement that anyone may recommend.

No matter how well researched a medication or supplement is, before I take it I will always research the ingredients and make sure I understand what it is I’m taking. So, that gives you some idea about what this article is going to be about. This article, or rather series of articles that I’m writing, are about the ingredients and components of Genf20 Plus, with all the relevant details.

Focusing on L-tyrosine.

Now, in the course of this article we are going to talk about l-tyrosine. We will start with benefits that l-tyrosine confers, and the role it plays in human health. To start with, l-tyrosine is actually produced naturally within the body, and is indeed an essential component in the normal production of neurotransmitters. That is to say, the body requires l-tyrosine, if it is to secrete neurotransmitters. And when I say that, you can understand that it is extremely important to your mental health that adequate levels of l-tyrosine be maintained. It often happens, as a person grows older, that levels of l-tyrosine within the brain begin to fall. When this happens, we see the incidence of many age-related diseases, such as Alzheimer’s, or even senility. An older person may even see a loss of cognitive function and of memory.

These are taken to be a normal result of the aging process, but in reality, the reason behind them, at least partially, is falling levels of l-tyrosine.  Under these circumstances, you understand just how important supplementing on l-tyrosine might be, especially after the age of forty. But, according to my research, that’s not all of the benefits that l-tyrosine can confer.

L-tyrosine improves cellular regeneration.

L-tyrosine is also seen to improve a cellular regeneration, thereby directly countering the aging process and ensuring that the benefits of any exercise you do are doubled. You will find that generate a great deal more muscle mass for a period of training, and that you feel less fatigued. There are benefits to the immune system as well, ensuring that your resistance to your resistance to various ailments is boosted, and also that you recover from illness that much faster.  Certain research is also indicated that l-tyrosine can stabilize the emotions and mood, and also counter the effects and causes of chronic depression. As a matter of fact, some research shows that l-tyrosine is so crucial to the body that chronically low levels of it can actually cause depression. This means that supplementing on l-tyrosine can actually prevent long term depression.

So, what role does l-tyrosine have to play in the in the aging process?

I already explained that it is falling levels of l-tyrosine that contribute to many ailments like Alzheimer’s that are normally thought to be a natural part of the aging process. Rather, let us discuss what role l-tyrosine has to play in the anti aging process. If you’ve been reading this article carefully, you have already grasped that l-tyrosine improves mental acuity, and that is can ensure that a person retains their mental abilities well passed middle age. Since both cognitive function and memory are boosted, this means that you will retain a youthful mind well into your old age. When you couple this with the fact that l-tyrosine can considerably boost the immune system, as well as ensure that exercise is more effective and builds more muscle mass and endurance, you can only come to the conclusion that l-tyrosine is certainly a contributor to a long lasting youth and a delayed old age.  Of course, l-tyrosine alone is not capable of completely countering the aging process, but that is what the careful mix of ingredients in Genf20 Plus is all about.

The more I research Genf20 Plus, the more I realize how carefully its mix of ingredients has been put together.

There are counters for virtually the entire spectrum of effects that usually result from age. But now to the million dollar question.

Does l-tyrosine have any side-effects, and if so, just how dangerous are they?

Now, I think I’ve mentioned that l-tyrosine is actually a natural product of the body itself, and under such circumstances it is perfectly safe under a wide variety of conditions, and of course, so long as you don’t overdose on it. That is why I recommend that you take l-tyrosine as part of a careful formulation like Genf20 Plus, because under such circumstances safety parameters are much higher. You also need to be aware that if you’re taking powerful drugs to counter depression, that l-tyrosine has been known to negatively interact with certain formulations. Before starting a course of any supplementation containing l-tyrosine, you should consult your doctor if you’re taking powerful medications for depression.

Clinical research have shown that people with a hyperactive thyroid should also avoid the use of l-tyrosine, as it has been seen to boost the secretion of virtually every hormone in the body, and under such circumstances can send thyroid production even higher in a person who is suffering from hyperthyroidism. However, there are no other known complications to using l-tyrosine. As you can see, my research has shown that it’s a perfectly safe supplement and extremely beneficial.


Garlic: What Are Its Health Benefits?

Garlic Health Is In The Smell

Garlic contains several substances that when mixed together correctly form a powerful healing compound call allicin. Not only does allicin have therapeutic value, it is also the substance in garlic that is responsible for the smell and flavor – it’s made out of sulfur. Very freshly sliced garlic has no odor because the allicin has not yet been formed. Only when it’s two precursors, the amino acid “allin” and the enzyme “allinase”, combine through contact after crushing or chewing does allicin appear. The reason that very old or well-cooked garlic has no flavor, and hence no allicin, is because the compound is also very volatile – heat and oxygen destroy it. Thus, proper processing is critical in the production of a garlic supplement.

Ally against Infections

Garlic BenefitsThe most ancient use of garlic is as an antibiotic, and certain components of garlic have been synthesized and used in China against bacteria and fungus infections since 1981. While there has been surprisingly little research into whether taking garlic protects against infection, ample evidence shows that garlic destroys pathogen of all kinds. In the laboratory, garlic destroys Heliobacter pylori, the bacteria indicted in stomach ulcers and stomach cancer, a dangerous new form of e.coli 0157:H7, Shigella (species of bacteria that cause digestive upset ranging from mild to severe diarrhea), and staphylococcus (1, 2, 3). Fungus infections such as candida, and the Giardia protozoa, also succumb to garlic (4). The potent bulb may also be effective against viruses ranging from the common cold to herpes (5, 6). In an age when current pharmaceutical antibiotics are losing their effectiveness or inducing resistance, garlic holds great promise. In certain cases, it is more effective than traditional antibiotics such as tetracycline.

Antioxidant for Anti-Aging

Garlic is a powerful protector against damage from free-radicals – the highly unstable oxygen molecules that damage (or oxidize) body tissue and blood fats and may be responsible for many effects of aging (11). Japanese research on a strain of animals which age prematurely shows that garlic extracts actually improved learning, cured memory problems, and prevented the brain atrophy expected in the animals. (12)

Cancer Fighter

Garlic by itself can neither prevent nor cure cancer. However, studies have shown that certain sulfur compounds found in garlic can help to prevent specialized tissues and cells from undergoing initial undifferentiation (13, 14). Other studies have shown that garlic can also help cells, which have recently lost their identity and become cancerous, to regain their original form and function. The types of cancer where garlic hold the greatest promise include those of the stomach, breast, prostate, colon and skin (14, 15, 16, 17, 18 19).

Clotting Reducer

Garlic is a potent inhibitor of blood clotting. Among those who suffer from clogged arteries, blood clots can pose a particular threat, since they can shut off blood to the heart, causing a heart attack, or to the brain, resulting in a stroke (22, 23, 24, 25).

Cholesterol Leveler

Garlic and garlic supplements also have been proven to lower cholesterol levels as much as 14%, which by itself is associated with a lowered risk of heart and vascular system diseases (20). Garlic has also been shown to inhibit LDL cholesterol oxidation, a key step in the process of cholesterol deposition into the artery wall. Thus, it keeps the arterial walls free of plaque and reduces the risk of constricted blood flow and medical conditions, including peripheral arterial disease and heart attacks (21). Garlic also lowers elevated levels of other blood fats, known as triglycerides, associated with heart disease.

Protection Against Toxins

Garlic also helps protect the body against a wide variety of toxins. It makes liver cells more effective at disarming poisons ranging from arsenic (7) to Tylenol (acetaminophen) overdose (8). Experiments have found that adding fried garlic to animals’ feed protect them from mutagens (9) and even from radiation (10).

Promise for Diabetics

Some evidence shows that garlic may be of benefit to diabetics. In animal studies, garlic supplementation helped control diabetes almost as much as insulin or oral diabetes drugs, and it stimulated the release of insulin (26).


  1. Sivam, G.D. et al. Heliobacter pylori-in vitro Susceptibility to Garlic Extract. Nut Canc 1997 27(2):118-21
  2. Choudhurry, A.R. et al. Efficacy of aqueous extract of garlic and allicin in experimental shigellosis in rabbits. Indian J Med Res 1991. Jan 93:33-6
  3. Shashikanth, K.N. et al. A comparative Study of Raw Garlic Extract and Tetracycline on Caecal Microflora and Serum Protein of albino Rats. Folia Microbiol (Phaha) 1984, 29(4):348-52
  4. Yoshida, S. et al. antifungal Activity of Ajoene Derived From Garlic Apt. Envir. Microbiol. 1987, Mar 53(3):615-7
  5. 5. Esanu, V. Recent Advances in the chemotherapy of Herpes Virus Infections. Biologie 1981, Jan-Mar 32(1):57-77
  6. Weber, N.D. et al. In Vitro Virucidal Effects of Allium Sativum (garlic) Extract and compounds. Planta Med 1992. Oct 58(5):417-23
  7. Choudhurry, A.R. et al. Inhibition of Clastogenic Effects of Arsenic Through Continued Oral Administration of Garlic Extract in Mice in Vivo. Mutat Res 1997, Aug 14:392(3):237-42
  8. Hu J.J. Protective Effects of Diallyl Sulfide on Acetaminophen Induced Toxicities. Food Chem Toxicol 1996, Oct 34(10):963-9
  9. Olasa K., et al. Reduction of Urinary Mutagen Excretion in Rats Fed Garlic. Cancer Lett 1997 Mar 19, 114(1-2); 195-6
  10. Jaiswal, S.K. and a Bordia. Radioprotective Effect of Garlic Allium Sativum Linn. In albino Rats. Ind J Med Sci 1996, Jul 59(7):231-3
  11. Prasad, K. Evaluation of Hydroxyl Radical Scavenging Property of Garlic. Mol Cell Biochem 1996, Jan 12 154(10):55-63
  12. Moriguchi, T et al. Anti-aging Effect of Aged Garlic Extract in the Inbred Brain Atrophy Mouse Model. Clin Exper Pharmacol Physiol 1997, Mar-Apr 24(3-4):235-42
  13. Milver, J.A. Garlic: It’s Anticarcinogenic and Antitumorogenic Properties. Nut Rev 1996, Nov 54 (11 Pt 2):582-6
  14. Lea, M.A. Organosulfur compounds and Cancer. Ad Exp Med Biol 1996. 401:147-54
  15. Ip c. et al. Potential of Food Modification in Cancer Prevention. Cancer Res 1994, Ap 1:54(7 sup):1957s-1959
  16. Dorant, E. et al. Garlic and its Significants for Preventing Cancer in Humans: A Critical view. Br J Cancer 1993, Mar 67(3):424-9
  17. Pinto, J.T. et al. Effects of Garlic Thioallyl Derivatives on Growth, glutathione concentration, and Polyamine Formation of Human Prostate Carcinoma Cells in Culture. Am j Clin Nut 1997, Aug 66(7):398-405
  18. Key, T. J. et al. a Case-controlled Study of diet and Prostate Cancer. Br J Cancer 1997. 76(5):678-87
  19. Witte, J.S. Relationship of Vegetables, Fruit, and Grain consumption to Colorectal Adenomatous Polyps. Am J Epidem 1996, Dec 1,144(11):1015-25
  20. Tonstad, S. Dietary Supplementation in treatment of Hyperlipidemia. Tidsskr Nor Laegeforen 1991. Nov 20, 11(78):3378-400
  21. Adler, A.J. and B.J. Holub. Effect of Garlic and Fish Oil supplementation on Serum Lipid and Lipoprotein Concentrations in Hypercholesterolemic Men. Am J Clin Nut 1997. Feb 65(2):445-50
  22. Beretz, A. Old and new Natural Products as Source of modern Antithrombotic Drugs. Planta med 1991, Oct 57(7):568-72
  23. Bordia, T. Effect of Garlic on Platelet Aggregation in Humans: A Study in Healthy Subject and Patients with coronary Artery Disease. Prostaglandins Leukot Essent Fatty Acids 1996, Sept 55(3):201-5
  24. Agarwal, K.C. Therapeutic Actions of Garlic Constituents. Med Res Rev 1996, Jan 16(1):111-24
  25. Bordia, R. an Evaluation of Garlic and Onion as Antithrombotic Agents. Prostaglandins Leukot Essent Fatty Acids 1996, Mar 54(3):183-6
  26. Augusti, K.T. and a. G. Sheela. Antiperoxide Effect of S-allyl cysteine Sulfoxide, an Insulin Secretagogue, in Diabetic Rats. Experientia 1996. Feb 15, 52(2):11520

*These statements have not been evaluated by the Food & Drug Administration

Benefits of Yohimbe You May Not Know About

What You Need to Know About Yohimbe

Yohimbe has long been used in Africa for its medicinal properties before many people became aware of it in the West. It offers a variety of health benefits. The efficacy is not just based on hearsay, but it is something that has been proven by some researchers.

Yohimbe Bark
Yohimbe Bark

You will find yohimbe extract in many supplements today. Why do these products include it? We discuss a number of the expected health benefits here. You will also find information on how it is used as well as safety.

What is Yohimbe?

Yohimbe is an evergreen tree belonging to the family of plants known as Rubiaceae. Its scientific name is Corynanthe yohimbe. The tree, which is native to Central and West Africa, is also called Pausinystalia yohimbe. It can be widely seen in countries such as Cameroon and Gabon.

The bark of this evergreen tree is medicinal. It has been used for this purpose in western and central Africa for centuries. It is being investigated today in Western countries for its potential to help in treating certain conditions, especially those that are sexual in nature.

The main active ingredient in yohimbe bark is yohimbine. This indole alkaloid is responsible for the health benefits you get from the herb. It was first extracted from the bark of the tree towards the end of the 19th century. Yohimbine was synthesized for the first time, using a 23-step process, in the late 1950s.

A standardized form of this active compound called yohimbine hydrochloride is a constituent of some prescription drugs in the United States.

The alkaloid is also said to come from the South America tree species Aspidosperma quebracho blanco and the perennial shrub Rauwolfia serpentina.

Yohimbe extract is used in veterinary medicine. It helps to reverses sedation in dogs and deer.

The herb also offers a number of benefits in humans. We shift our attention to some of these in the sections that follow.

Corrects Erectile Dysfunction

The most popular benefit of yohimbe is treatment of erectile dysfunction. The bark has long had a reputation of being a powerful aphrodisiac. You can find the extract in certain prescription medications used for correcting erection problems in some places outside the U.S. Many supplements today include it with the hope of it improving sexual function.

Yohimbe helps in this regard as a result of its ability to cause blood vessels to dilate. This allows blood to flow more freely around the body, including to the penis. The belief is that this effect can make it possible for men with ED issues to achieve firm erections.

The efficacy of yohimbe in resolving erectile dysfunction is such that some people describe it as “herbal Viagra.” It supposedly can correct sexual dysfunction in individuals who are even older than 75 years! There are clinical studies showing this herb has potential in the treatment of organic impotence in men.

The active ingredient in the bark can also stimulate the central nervous system. It enhances nerve impulses that contribute to orgasm. It is, therefore, not only beneficial for improving sexual function in men, but also in women.

Regulates Blood Sugar

High glucose levels in the blood are dangerous. This can predispose you to several unpleasant medical conditions. But the kinds of diet many people maintain expose them to risk of having excess levels.

You may get help from yohimbe in keeping the amount of sugar in your blood in check. There is research showing that it may possibly help in this regard. It blocks certain receptors to increase insulin levels and reduce blood glucose.

But there are experts who say yohimbe has no effect on blood sugar levels. They admit, however, that it improves the efficacy of drugs for treatment of diabetes.

Strips body fat

For those individuals having weight issues, it may be interesting to learn yohimbe can be of help. Some researchers have found that using the herbal extract may help to burn body fat.

Yohimbe bark is thought to block certain receptors that make it hard for people to do away with body fat. Suspected mechanisms of action include regulation of appetite and promotion of lipolysis, breakdown of fats.

The effect of yohimbe for fat loss was shown in a study of obese female subjects who were on 1,000-calorie diets. Those who received 20 mg of the bark extract lost three pounds more than those in the control group after a period of three weeks.

However, not all studies done to investigate possible weight loss benefits reported positive effects.

Boosts Performance

Yohimbe is a mild stimulant. This makes it potentially helpful for fighting lethargy, increasing energy, and boosting alertness.

The bark is an alpha-2 antagonist. It blocks alpha-2 receptors and improves the function of the sympathetic nervous system. This promotes the release of adrenaline to enhance athletic performance. Yohimbe can help guard against fatigue during and following exercise.

Helps with Depression

Yohimbe bark may help address the symptoms of depression, being an alpha-2 blocker. It has a chemical structure comparable to several drugs for correcting mental disorders.

There is evidence that alpha-2 antagonists can improve the efficacy of antidepressants. Dopamine is one of the neurotransmitters whose levels yohimbe is believed to increase. You may use it alone or in combination with other drugs, such as selective serotonin reuptake inhibitors (SSRIs), to fight depression.

It appears the active ingredient also increases the levels of nicotinamide adenine dinucleotide (NAD). This coenzyme offers decent potential in the treatment or prevention of neurodegenerative disorders, including Alzheimer’s disease.

Regulates Blood Pressure

You may find yohimbe beneficial for resolving issues related to blood pressure. It can increase or decrease blood pressure, depending on doses. Chosen dosage may bring about vasodilation or vasoconstriction – that is, the widening or narrowing of blood vessels.

Essentially, you can use it to correct low blood pressure or high blood pressure. But people are more likely to use it for the former.

Other Benefits

Among the other benefits associated to yohimbe is control of side effects. Doctors may recommend it to patients to moderate adverse reactions from the use of certain medications, especially antidepressants. For example, it can help to deal with fatigue or sexual issues resulting from the use of these drugs.

Evidence from clinical studies suggests yohimbe may be helpful for preventing fainting. Its uses in traditional medicine also include treatment of angina.

How to Use Yohimbe

There is uncertainty on the amount of yohimbine you get in a dosage. The amount of the active ingredient will depend on, among other things, method of cultivation and part of the tree used. So, the dosage will vary widely among OTC products. Researchers at the Food and Drug Administration found that most of these contain negligible amounts.

For this reason, the FDA approved only prescription drugs containing yohimbe for treating impotence. A dosage between 5 mg and 10 mg three times a day was used in most clinical trials for treatment of erectile dysfunction. The drugs are available as tablets or capsules.

Dose typically depends on the goal of treatment.

You need to do your homework on safety and reliability if you intend using yohimbe supplements. These are not regulated by the FDA. You, therefore, want to make sure you are buying a high quality, trusted brand.

How Safe is Yohimbe?

You may not experience any adverse reaction if you are in good state of health when using yohimbe bark extract.

But inappropriate use can give rise to side effects. These can include abdominal distress, dizziness, headaches, increased heart rate, cold sweating, insomnia, and irregular blood pressure. In worst case scenario, yohimbe may cause over-stimulation of the central nervous system and paralysis.

It is not advisable for people with kidney or liver issues to use yohimbe. Pregnant and nursing women should also stay away from it.

There may be interactions between the herb and some medications. For instance, you may not use it with stimulants or ACE inhibitors.


Yohimbe has made a name for itself more because of its perceived ability to improve sexual function. It offers a variety of other benefits as well. But research findings on efficacy are mixed, even when there are prescription drugs containing it.

If you wish to use yohimbe supplements, make sure you buy a product by a reputable company. Many offerings on the market contain very low amounts of the active ingredient yohimbine. Do ensure you speak with your doctor when planning to use any supplement or drug containing the extract.