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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Brand Name
Alzh L
Generic Name
Phosphatidylserine, Magnesium Oxide
Active Ingredient
Ginkgo Biloba LeafCategory
Other
Variants
1
Different strengths and dosage forms
| Strength | Form | Route | NDC |
|---|---|---|---|
| 75.02 mg/450mg | TABLET | ORAL | 84540-230 |
Detailed information about Alzh L
References used for this content
This page is for informational purposes only and does not replace medical advice. Before using any prescription or over-the-counter medication for Alzh L, you must consult a qualified healthcare professional.
Ginkgo Biloba Leaf is a botanical extract often classified as a nootropic or cerebrovascular agent. It is primarily studied for its potential to improve cognitive function and peripheral circulation through its antioxidant and antiplatelet properties.
Dosage for Ginkgo Biloba Leaf varies significantly depending on the condition being addressed and the concentration of the extract. Most clinical trials utilize a standardized extract (24% flavone glycosides, 6% terpene lactones).
It is generally recommended to start at a lower dose (e.g., 40 mg twice daily) and gradually increase to the target dose over several weeks to minimize the risk of gastrointestinal side effects.
Ginkgo Biloba Leaf is not recommended for use in children (under 18 years of age). There is insufficient safety data regarding its impact on developing neurological and endocrine systems. Additionally, the risk of 'ginkgotoxin' exposure, though low in leaf extracts, poses a greater threat to pediatric patients who may be more sensitive to neurotoxins.
There are no specific dosage adjustment guidelines for patients with kidney disease. However, since ginkgolides are primarily excreted via the kidneys, patients with significant renal impairment should use caution and consult a nephrologist.
Ginkgo is metabolized to some extent by the liver. Patients with cirrhosis or other liver diseases should be monitored closely, as the herb may theoretically affect liver enzyme levels or interact with other medications metabolized by the liver.
No specific dose reduction is usually required for the elderly; however, this population is at higher risk for polypharmacy (taking multiple drugs). Because Ginkgo increases bleeding risk, elderly patients on blood thinners (Aspirin, Warfarin) must be extremely cautious.
If you miss a dose, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and return to your regular dosing schedule. Do not double the dose to make up for a missed one, as this increases the risk of side effects like headache or palpitations.
Signs of an acute overdose of Ginkgo Biloba Leaf extract may include:
In the event of a suspected overdose, contact your local poison control center or seek emergency medical attention immediately. While leaf extracts have a relatively high safety margin, massive ingestion requires clinical monitoring.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or stop taking Ginkgo Biloba Leaf without medical guidance, especially if you are using it for a diagnosed vascular or cognitive condition.
While Ginkgo Biloba Leaf is generally well-tolerated when taken at recommended dosages, some individuals may experience mild adverse reactions. The most common side effects include:
> Warning: Stop taking Ginkgo Biloba Leaf and call your doctor immediately if you experience any of these serious symptoms:
The long-term safety of Ginkgo Biloba Leaf (beyond 6-12 months) is still being evaluated. A significant study by the National Toxicology Program (NTP) in 2013 found an increase in liver and thyroid cancers in mice and rats treated with high doses of Ginkgo extract over two years. While these findings have not been definitively replicated in humans, they have led to increased scrutiny regarding the long-term use of high-dose Ginkgo supplements. Patients should discuss the duration of therapy with their physician and consider periodic breaks from supplementation.
No FDA black box warnings for Ginkgo Biloba Leaf. Because Ginkgo is regulated as a dietary supplement and not a prescription drug, it does not carry the same mandatory black box labeling. However, major medical bodies emphasize the critical danger of combining Ginkgo with anticoagulant medications.
Report any unusual symptoms or persistent side effects to your healthcare provider. Monitoring for changes in blood pressure and heart rate is recommended during the first few weeks of use.
Ginkgo Biloba Leaf is a potent pharmacological agent despite its natural origin. The most critical safety concern is its effect on hemostasis (the body's ability to stop bleeding). Patients must inform all healthcare providers, including dentists and surgeons, that they are taking Ginkgo.
No FDA black box warnings for Ginkgo Biloba Leaf. As a dietary supplement, it is not subject to the same FDA labeling requirements as pharmaceutical drugs; however, this does not imply that the substance is without risk.
For patients taking Ginkgo Biloba Leaf long-term, healthcare providers may recommend the following monitoring:
Ginkgo is generally not expected to impair the ability to drive or operate machinery. However, because it can cause dizziness or headaches in some individuals, patients should observe their reaction to the supplement before engaging in potentially dangerous activities.
There is no direct contraindication between Ginkgo and moderate alcohol consumption. However, both alcohol and Ginkgo can have mild blood-thinning effects and can irritate the gastrointestinal lining. Combining them may increase the risk of stomach upset or bleeding. Furthermore, alcohol may exacerbate the dizziness associated with Ginkgo use.
There is no evidence of a 'withdrawal syndrome' associated with Ginkgo Biloba Leaf. However, for patients using it for cognitive or vascular symptoms, stopping the supplement may result in a return of those symptoms. If Ginkgo is being stopped before surgery, it should be done abruptly 14 days prior to the procedure as per surgical guidelines.
> Important: Discuss all your medical conditions, including any history of bleeding, seizures, or diabetes, with your healthcare provider before starting Ginkgo Biloba Leaf. Natural products are not inherently safe and require professional oversight.
For each major interaction, the mechanism typically involves either pharmacodynamic synergy (both substances doing the same thing, like thinning the blood) or pharmacokinetic interference (Ginkgo changing how the liver breaks down the drug). The clinical consequence is usually either increased toxicity (bleeding) or reduced efficacy (seizure control or HIV suppression).
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking. A complete 'brown bag' review of your supplements is the best way to prevent dangerous interactions.
Conditions where Ginkgo Biloba Leaf must NEVER be used include:
Conditions requiring a careful risk-benefit analysis by a physician:
Patients who are allergic to the following substances should exercise extreme caution or avoid Ginkgo Biloba Leaf due to the presence of cross-reactive alkylphenols (urushiols):
> Important: Your healthcare provider will evaluate your complete medical history, including your surgical schedule and allergy profile, before recommending Ginkgo Biloba Leaf. Never self-prescribe this supplement if you have a known bleeding or seizure disorder.
Ginkgo Biloba Leaf is classified as Category C (by traditional standards) or 'Avoid Use.' There are no adequate and well-controlled studies in pregnant women. The primary concern is the antiplatelet effect, which could cause maternal or fetal bleeding. Some animal studies have suggested potential teratogenic effects at extremely high doses, though these have not been confirmed in humans. Because it may also act as a uterine stimulant in high doses, it should be avoided during all trimesters. If a patient discovers they are pregnant while taking Ginkgo, they should discontinue use immediately and consult their obstetrician.
It is unknown whether the active constituents of Ginkgo Biloba Leaf (ginkgolides and flavonoids) are excreted into human breast milk. Due to the potential for serious adverse reactions in nursing infants—specifically regarding blood clotting and neurological development—the use of Ginkgo is not recommended while breastfeeding. Mothers should discuss alternative options for cognitive or vascular support with their healthcare provider.
Ginkgo Biloba Leaf is not approved for use in individuals under the age of 18. The safety and effectiveness have not been established in children. There is a specific concern regarding ginkgotoxin, which can cause seizures in pediatric patients at much lower thresholds than in adults. Furthermore, Ginkgo's effect on the developing brain and endocrine system remains unstudied.
The elderly are the primary consumers of Ginkgo Biloba Leaf, often using it for age-related memory loss. While generally safe in this population, several risks are amplified:
Since approximately 70% of ginkgolides A and B are excreted unchanged in the urine, patients with a Glomerular Filtration Rate (GFR) below 30 mL/min should use Ginkgo with caution. There is no specific data on dialysis clearance; however, given the potential for bleeding, Ginkgo should generally be avoided in patients with end-stage renal disease (ESRD) who are already at high risk for uremic bleeding.
In patients with mild-to-moderate hepatic impairment (Child-Pugh Class A or B), Ginkgo should be used with caution. In severe hepatic impairment (Child-Pugh Class C), use is generally discouraged. The liver is responsible for the metabolism of the flavonoid components, and liver dysfunction may lead to unpredictable plasma levels of the extract.
> Important: Special populations require individualized medical assessment. Do not assume that 'natural' means safe for pregnant women, children, or the elderly.
Ginkgo Biloba Leaf extract (specifically standardized EGb 761) functions through several complex molecular pathways:
The onset of the circulatory effects (vasodilation) can occur within 1-3 hours of a single dose. However, the pharmacodynamic effects on cognition and memory typically require chronic administration for 4 to 8 weeks to reach a steady state of clinical benefit. There is no evidence of the development of pharmacological tolerance with long-term use.
| Parameter | Value |
|---|---|
| Bioavailability | 70% - 100% (Ginkgolides A/B) |
| Protein Binding | Low (<15%) |
| Half-life | 2 - 6 hours |
| Tmax | 1 - 2 hours |
| Metabolism | Primarily Hepatic (Minor CYP3A4/2C19) |
| Excretion | Renal (70%), Fecal (30%) |
Ginkgo Biloba Leaf is classified as a Phytomedicine or Herbal Nootropic. Within European regulatory frameworks, it is often listed under 'Anti-dementia drugs' or 'Peripheral vasodilators.' It shares some therapeutic goals with drugs like Pentoxifylline (for circulation) and Donepezil (for cognition), though its mechanisms are distinct.
Common questions about Alzh L
Ginkgo Biloba Leaf is primarily used as a dietary supplement to support cognitive function, memory, and mental sharpness, particularly in older adults. It is also frequently utilized to improve symptoms of poor circulation, such as leg pain during walking (intermittent claudication) and cold extremities. Some individuals use it to manage tinnitus (ringing in the ears) and vertigo, believing it improves blood flow to the inner ear. While it is popular for these uses, it is important to note that the FDA has not approved Ginkgo for the treatment of any medical condition. Clinical results have been mixed, with some studies showing benefit for dementia symptoms while others show no significant effect compared to a placebo. Always consult a healthcare provider before using it for a specific health concern.
Most people tolerate Ginkgo Biloba Leaf well, but the most common side effects include mild headaches, dizziness, and gastrointestinal upset such as nausea or constipation. Some individuals may also experience heart palpitations or a racing pulse shortly after taking a dose. Allergic skin reactions, including rashes or itching, can occur, especially in people sensitive to plants like poison ivy or cashews. Because Ginkgo affects blood flow, minor bruising or slightly longer bleeding times from small cuts may also be noticed. These side effects are usually temporary and resolve if the supplement is discontinued. If you experience severe abdominal pain or a persistent, worsening headache, you should stop use and contact a doctor.
There is no known direct chemical interaction between Ginkgo Biloba Leaf and alcohol that would make the combination strictly prohibited. However, both substances can have a mild 'blood-thinning' effect, and combining them might theoretically increase the risk of gastrointestinal bleeding or bruising. Alcohol can also worsen the dizziness or lightheadedness that some people experience as a side effect of Ginkgo. For those using Ginkgo to improve memory or cognitive function, alcohol consumption should be limited, as it can counteract the potential benefits of the supplement. It is always safest to discuss your alcohol intake with your doctor when starting any new herbal or medicinal regimen.
Ginkgo Biloba Leaf is generally considered unsafe for use during pregnancy and should be avoided. The primary concern is its antiplatelet activity, which could increase the risk of bleeding for both the mother and the developing fetus, particularly during labor and delivery. Some animal studies have also raised questions about its potential to affect fetal development, although human data is severely lacking. Additionally, the lack of standardization in many supplements means there is a risk of contamination with harmful substances. Because there is no proven medical necessity for Ginkgo during pregnancy, the risks far outweigh any potential benefits. Pregnant women should always consult their obstetrician before taking any herbal supplements.
The time it takes to notice the effects of Ginkgo Biloba Leaf depends on the reason you are taking it. For cognitive support and memory improvement, clinical studies suggest that it typically takes 4 to 6 weeks of consistent, daily use to see results. Some people may need to take it for up to 12 weeks before a noticeable difference in mental clarity or circulation occurs. It is not a 'quick fix' or an immediate stimulant like caffeine; rather, it works gradually by modulating blood flow and protecting neurons over time. If you do not notice any improvement after 8 to 12 weeks of consistent use, the supplement may not be effective for you. Consistency in dosing is key to achieving any potential therapeutic benefit.
Yes, you can generally stop taking Ginkgo Biloba Leaf suddenly without experiencing physical withdrawal symptoms. Unlike some prescription neurological medications, Ginkgo does not cause chemical dependency. However, if you were taking Ginkgo to manage symptoms like leg pain or cognitive fog, those symptoms may return once the supplement is discontinued. The only situation where sudden discontinuation is mandatory is at least two weeks before a scheduled surgery to ensure your blood's clotting ability returns to normal. If you have been taking high doses for a long period, you may wish to consult your doctor before stopping just to ensure your overall treatment plan remains on track.
If you miss a dose of Ginkgo Biloba Leaf, you should take it as soon as you remember, unless it is almost time for your next scheduled dose. In that case, simply skip the missed dose and continue with your regular routine. You should never take two doses at once to 'catch up,' as this can increase the risk of side effects like headache, dizziness, or stomach upset. To help you remember your doses, try taking the supplement at the same time each day, perhaps with a specific meal. Maintaining a steady level of the extract in your system is the best way to evaluate whether the supplement is helping your condition.
There is no clinical evidence to suggest that Ginkgo Biloba Leaf causes weight gain. In fact, Ginkgo does not contain significant calories, nor does it appear to influence metabolic pathways in a way that would promote fat storage or increase appetite. Some early research in animal models even suggested that Ginkgo might have a slight protective effect against metabolic syndrome, though this has not been proven in humans. If you experience unexpected weight gain while taking Ginkgo, it is likely due to other factors such as diet, lifestyle changes, or other medications. You should consult your healthcare provider to determine the underlying cause of any significant weight changes.
Ginkgo Biloba Leaf has a high potential for drug interactions, so it must be used cautiously with other medications. It is particularly dangerous when combined with blood thinners like Warfarin, Aspirin, or Clopidogrel, as it can significantly increase the risk of internal bleeding. It may also interact with certain antidepressants (SSRIs), anti-seizure medications, and drugs used to treat HIV or diabetes. Because Ginkgo can affect how the liver processes various drugs, it can either make other medications less effective or dangerously increase their levels in your blood. Always provide your doctor or pharmacist with a full list of all medications and supplements you are taking before starting Ginkgo.
Ginkgo Biloba Leaf is not a prescription drug, so the concept of 'generic' vs. 'brand name' works differently than with pharmaceuticals. It is available as a dietary supplement from hundreds of different manufacturers under various brand names. However, the most important factor is whether the product is a 'standardized extract.' Most clinical research is based on an extract called EGb 761, which is standardized to contain 24% flavonoid glycosides and 6% terpene lactones. When shopping for Ginkgo, look for products that specify this standardization on the label to ensure you are getting a product similar to what is used in clinical trials. Quality can vary significantly between brands, so choosing a reputable manufacturer is essential.
Other drugs with the same active ingredient (Ginkgo Biloba Leaf)