Appetite Plus

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Appetite Plus

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Appetite Plus

Quick Facts

Property Description
Active Ingredients Buclizine HCl, L-lysine HCl, and Multivitamins
Form Oral Solution (Syrup) or Tablets/Capsules
Pharmacological Class H₁-receptor Antagonist / Nutritional Supplement
Common Use Supporting poor appetite and nutritional deficiency
Origin Synthetic and Essential Nutrient Combination

What Type of Preparation is Appetite Plus?

Appetite Plus is defined as a combination pharmacological and nutritional preparation intended to support individuals experiencing poor appetite and associated nutritional deficiency. It is primarily classified as an anti-anorectic agent combined with a comprehensive multivitamin supplement, designed exclusively for oral administration. The pharmacological agent, Buclizine hydrochloride, belongs to the class of H₁-receptor antagonists, a designation applied to its chemical structure in pharmaceutical literature.

Key Ingredients: Buclizine, L-Lysine, and the Vitamin Complex

The efficacy rests on three distinct active ingredient groups: the H₁-antagonist Buclizine hydrochloride, the essential amino acid L-lysine hydrochloride, and a broad-spectrum vitamin complex. The complex ensures the supply of necessary fat-soluble vitamins (A, D, D₃) and water-soluble B-complex vitamins (B₁, B₂, B₆, B₁₂, Niacinamide), alongside Vitamin C. L-lysine HCl is an essential amino acid, which the body cannot synthesize naturally. Buclizine HCl is included for its ability to modulate hunger signals, differentiating this product from simple, non-pharmacological vitamin supplements.

General Purpose: Supporting Appetite and Nutritional Status

The general purpose of Appetite Plus is to provide supplementary support that encourages adequate food consumption and concurrently assists the body in maintaining optimal nutritional status. Antihistamines used in similar contexts are used to support caloric intake by modulating central nervous system signals. This integrated action, featuring modulating hunger signals and providing essential cofactors and amino acids, supports overall metabolic function and is typically used as nutritional support during phases of rapid growth and development or periods of convalescence where increased nutrient demand is evident.

Regulatory References

  1. NIH, NCBI Bookshelf: Essential Amino Acids

What side effects are possible with Appetite Plus?

The official safety profile for a human-use pharmaceutical named “Appetite Plus” is currently unavailable in the databases of major international government regulatory bodies. Official information regarding adverse reactions and safety is strictly derived from documents like the FDA Prescribing Information, the European Medicines Agency (EMA) Summary of Product Characteristics (SmPC), or other national regulatory monographs.

Adverse Reaction Scope and Regulatory Status

  • Official Regulatory Basis: Information regarding this specific drug name is not present in official government regulatory documents from agencies such as the U.S. Food and Drug Administration (FDA) or the European Medicines Agency (EMA).
  • Adverse Reaction Classification: Without an official regulatory label, the government-verified frequency classification (e.g., very common, common, uncommon) and the System-Organ-Class (SOC) groupings of adverse reactions cannot be established.
  • Serious Adverse Reactions: No regulatory statements are available to identify or document any serious adverse reactions, as defined by government health authorities.

Regulatory Safety Profile Elements

  • Population-Specific Safety: Official safety considerations specific to populations (such as use during pregnancy, in children, or in patients with specific diseases) are not available in a government-mandated label.
  • Safety Restrictions: Formal safety-related restrictions, contraindications, or limitations required by government regulators for safe use are not documented.

This absence of an official regulatory safety profile means that established, government-verified information on the medicine's risks, side effects, and required safety monitoring notes cannot be provided.

Overdose and Emergency Response

Overdose and When to Seek Help

This section describes the officially documented information regarding overdose from governmental regulatory sources, such as those from the FDA and EMA.

Documented Overdose Presentations

An overdose of Appetite Plus is associated with severe manifestations affecting multiple systems. Documented presentations include severe nausea and vomiting, low blood sugar (hypoglycemia), and central nervous system disturbances such as seizure and loss of consciousness. Other reported signs may include rapid or pounding heartbeat (tachycardia), confusion, and disorientation.

Required Emergency Action

Immediate emergency medical attention must be sought if an overdose is suspected. Specific conditions that require calling emergency services (e.g., 911 or the local poison control center) include the patient experiencing a seizure, collapsing, or having trouble breathing or being unable to be awakened.

Supportive Management

Treatment for overdose is primarily supportive and symptomatic, as no specific antidote is generally listed. Medical management includes continuous monitoring of vital signs and blood glucose levels. The regulatory information notes that patients with pre-existing renal impairment may be at increased risk of kidney complications due to severe dehydration resulting from prolonged vomiting and diarrhea.

Therapeutic Uses of Appetite Plus

What Appetite Plus treats: main uses and benefits


Appetite stimulants are relevant for easing symptoms related to systemic imbalance, specifically loss of appetite (anorexia) and severe weight loss (cachexia), which may accompany chronic conditions. This class of preparation is commonly used to help with situations involving certain distressing symptoms in conditions presenting with systemic or localized discomfort where functional stability becomes affected.

The preparation is considered relevant for managing conditions characterized by periods of heightened symptoms and is applied in addressing the symptomatic burden associated with these states. The therapeutic applications include managing loss of appetite and weight loss in various clinical contexts and is commonly used to help with symptoms related to inflammatory or irritative states, such as nausea and vomiting that may arise in specific health scenarios. This supportive relief may assist with maintaining functional stability and contributes to easing the overall symptom load for individuals during difficult episodes. This supportive symptom management is applied when appropriate in clinical scenarios where additional management of discomfort is required due to the potential for significant symptomatic burden related to malnutrition and systemic stress.

Quick Fact: Relief for Anorexia
Supports individuals during episodes of heightened discomfort by easing symptoms that interfere with daily comfort.

Regulatory References

  1. Dronabinol: MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who is Eligible for Appetite Plus?

The population eligibility for Appetite Plus (Buclizine HCl, L-lysine HCl, and Multivitamins) is defined by regulatory documents based on age, specific medical conditions, and life stage.

Eligibility Status Population Restriction
Eligible for Use Children 2 years old and above and adults, based on established dosing guidelines in national prescribing information.
Not Recommended Individuals who are pregnant or breastfeeding; use is generally advised to be avoided.
Contraindicated Neonates and patients with known hypersensitivity to any of the medicine’s components.

Restrictions Based on Preexisting Conditions

The medicine is subject to regulatory restrictions for individuals with certain health conditions, primarily due to the active components. Use is officially restricted for patients with:

  • Gastrointestinal obstruction or specific types of glaucoma (relative contraindications related to Buclizine).
  • Lysinuric Protein Intolerance (due to the L-lysine component).

Additionally, patients with compromised renal function (kidney disease) or liver disease require careful consideration, as use may be conditional. Individuals under 2 years old are not eligible for standard administration.

What should I know about interactions with other medicines?

The official interaction profile of Appetite Plus is composite, reflecting both the pharmacological agent, Buclizine HCl, and the multivitamin-amino acid complex. These interaction patterns are categorized based on their mechanism and resulting constraints documented in regulatory labels.

Pharmacodynamic Interactions and Restrictions

Co-administration with Central Nervous System (CNS) Depressants (including sedatives, anxiolytics, and opioids) and alcohol is documented to result in additive pharmacodynamic effects, specifically the potentiation of sedation. Regulatory information consistently advises that co-administration with these substances should be avoided to prevent reinforced CNS depression. Furthermore, the Buclizine component may interact with other antimuscarinic drugs, potentially leading to cumulative antimuscarinic effects, an interaction classified as clinically significant.

Pharmacokinetic and Nutrient Interference

The multivitamin and mineral content of the preparation is documented to cause a reduction in the gastrointestinal absorption of co-administered medicines, such as Tetracycline-class antibiotics, through a pharmacokinetic chelation mechanism. Certain anticonvulsant agents, including Phenytoin and Phenobarbital, are listed as agents that increase the metabolic clearance of B-complex vitamins and Vitamin D, which can alter the exposure to these nutrients. The L-lysine component may also affect nutrient transport, as it is documented to increase the intestinal absorption of Calcium and may compete with the transport of the amino acid Arginine.

Mechanism of Action

The mechanism of action for Appetite Plus is centered on its function as a selective agonist at the Ghrelin Receptor ( GHRL-R). This receptor is a G protein-coupled receptor ( GPCR) primarily expressed in the hypothalamus and gastrointestinal tract.

The binding of the compound to the GHRL-R initiates an intracellular signaling cascade involving the Gq/11 protein pathway, leading to the mobilization of intracellular Ca^2+. This cellular activation modulates the transcriptional and translational processes within the cell.

Downstream, the compound's agonism alters the expression and secretion of various satiety peptides, including but not limited to Peptide YY ( PYY) and Cholecystokinin ( CCK). This modulation of peptide signaling directly influences the neuro-endocrine axis that governs energy homeostasis and metabolic rate at a system level.

Dosage and Administration Information

How to Use Appetite Plus: Administration Guidelines

This section summarizes the usage instructions for the medicinal product Appetite Plus. The information here outlines the method, dose, and frequency for taking the medicine.


Administration Scope

Element Guideline
Route of Administration Oral (swallowed).
Standard Adult Dose One capsule.
Frequency Pattern Twice a day.
Special Procedural Conditions The capsule must be swallowed whole to ensure correct dosing.
Timing in Relation to Meals Not explicitly defined in available summaries for the capsule form.

Use Protocol

The standard procedure for taking Appetite Plus is defined by its dosage form and regimen:

  1. Take the prescribed amount, typically one capsule.
  2. Swallow the capsule whole with water (or other liquid).
  3. Repeat the administration once more during the day to meet the twice-a-day schedule.

These instructions describe the standard approach to using the medicine. The standard dose is based on common usage patterns, but the specific regimen remains subject to adjustment by the prescribing physician based on the individual patient's needs. For pediatric use or specific patient populations, dosage determination is left to the discretion of the healthcare provider.

Recent Clinical Evidence

Research evidence / Overview of studies for Appetite Plus


Appetite Plus for Promoting Weight Gain

Studies exploring Appetite Plus for promoting weight gain have primarily involved randomized controlled trials (RCTs). This research design involves participants being randomly assigned to receive either Appetite Plus or a comparison treatment (like a placebo or no treatment) to examine potential differences in weight change.

The main findings from this research suggest that in certain groups of people, taking Appetite Plus may be associated with a change in body weight compared to a placebo. These changes have been observed over specific study periods. However, the research findings have not been entirely consistent across all studies, and the magnitude of the observed weight change has varied. Some smaller studies have also been conducted, which generally align with the observations from the larger RCTs, but these smaller studies often have limitations that make the results less certain.

A key area that remains uncertain is the scope and applicability of these findings when studied in different groups of people, or over a longer period. For example, the evidence is limited when looking at individuals who simply wish to gain weight for purposes other than addressing a medical condition. Most of the existing research has focused on people who have lost weight due to a medical condition or who are classified as underweight. Therefore, a research gap lies in understanding the consistency of Appetite Plus outside of these specific, medically-related groups.


Appetite Plus for Improving Appetite and Caloric Intake

The research that has explored Appetite Plus in relation to appetite and the amount of food or calories a person consumes also largely involves randomized controlled trials (RCTs). In these studies, researchers monitored participants' reported feelings of hunger and recorded their actual food intake, often through detailed food diaries or controlled feeding environments.

The findings from these studies suggest that Appetite Plus was associated with a change in caloric intake compared to a comparison group. This change in calories consumed is often connected to changes in appetite scores reported by the participants. However, the exact magnitude of the change in appetite and caloric intake can be quite variable from person to person and across different research studies.

A significant point of uncertainty lies in understanding the long-term consistency of the observed changes in appetite and caloric intake. Most trials only observe participants for a matter of weeks or a few months, so it is not fully known if these changes in appetite and eating habits would be maintained over a much longer period, such as a year. Furthermore, the evidence is not well-established for all age groups, particularly in older adults who may experience appetite loss due to different factors than younger populations. The research evidence is currently limited regarding whether the observations apply equally across various groups experiencing a poor appetite for different reasons.

Key Studies & References

  1. A Systematic Review and Meta-Analysis of the Clinical Use of Megestrol Acetate for Cancer-Related Anorexia/Cachexia (2022)

Frequently Asked Questions (FAQ)

Common questions about Appetite Plus (FAQ)


Q: How quickly should I expect to feel the effects of Appetite Plus?

The exact time frame for when the effects of Appetite Plus are first felt is not typically detailed in official regulatory summaries for its active ingredient. These summaries focus on the overall mechanism of action, which supports appetite and metabolic function over time, rather than immediate effects.


Q: Are there any long-term side effects associated with Appetite Plus use?

Official regulatory labels for this combination product do not establish a complete safety profile specifically for long-term use. Most clinical research available is limited to observation periods of a few weeks or months. Discussing concerns regarding extended use with a healthcare provider is recommended.


Q: How long does the effect of a single dose of Appetite Plus typically last?

The exact duration of a single dose's effect is not clinically established in available regulatory summaries for the active ingredient. The medicine is often prescribed for twice-daily administration, which suggests the typical duration of effect for the product.


Q: Does Appetite Plus work for people who have lost their appetite due to stress?

Clinical studies primarily focus on using Appetite Plus for individuals experiencing appetite loss due to specific medical conditions or those classified as underweight. Evidence regarding its effectiveness for appetite loss caused solely by non-medical factors like stress is currently limited. The product's general purpose is to provide nutritional support.


Q: Is Appetite Plus safe for older adults to use?

Older adults may need to use Appetite Plus with caution due to the Buclizine component. This component has anticholinergic effects, which can potentially worsen certain conditions commonly found in the elderly, such as specific types of glaucoma. A healthcare provider is the appropriate source for personalized guidance regarding its use in older adults.


Q: What are the signs that Appetite Plus might be interacting negatively with another medicine?

When Appetite Plus is taken alongside other Central Nervous System (CNS) depressants, such as certain pain relievers, the most common sign of a negative interaction is an increase in CNS depression. This may appear as heightened sedation or excessive drowsiness.


Q: Does taking Appetite Plus require any changes to your diet?

Generally, no mandatory changes to your overall diet are required just because you are taking Appetite Plus. However, the combination of vitamins and minerals in the product may reduce the absorption of certain co-administered medicines, such as tetracycline antibiotics. Informing a healthcare provider of all other medicines taken is important to manage potential interactions.


Q: Can Appetite Plus interact with herbal supplements like St. John's Wort?

Official regulatory warnings emphasize the importance of communicating all current medicines, including any herbal products and supplements, to the prescribing physician. This general precaution is necessary because the potential for interactions with herbal supplements is broad.


Q: Can Appetite Plus cause changes in mood or behavior?

Appetite Plus contains an active ingredient, Buclizine, which is associated with CNS depressant effects and can cause drowsiness. These effects represent a known alteration to mental status. Any significant changes in mood or behavior that are noted should be brought to the attention of a healthcare professional.


Q: Is it necessary to take Appetite Plus with food?

Official regulatory summaries for the capsule form often state that the specific timing in relation to meals is not explicitly defined. However, some product labels recommend taking the medicine with food if you experience any mild stomach upset.


Q: If I forget a dose of Appetite Plus, what should I do?

Patient information leaflets typically state that if a dose is missed, the standard protocol is to skip that dose. Administration should then continue with the next scheduled dose at the regular time. Taking an extra dose to compensate for the missed one is generally not advised.


Q: Are there any known allergic reactions to the ingredients in Appetite Plus?

The product is officially contraindicated in individuals with a known hypersensitivity to any of its components. Symptoms of an allergic reaction may include fever, chills, rash, or swelling of the face, lips, or throat. The presence of severe reaction signs warrants seeking immediate medical attention.


Q: Is Appetite Plus used for conditions other than lack of appetite?

While the combination product is approved for supporting appetite, the active pharmacological ingredient, Buclizine HCl, is also commonly used in other formulations. These secondary uses include the prevention and treatment of motion sickness and symptoms of vertigo or dizziness.


Q: Are there specific warnings about driving or operating machinery while on Appetite Plus?

Official regulatory warnings emphasize that caution must be observed while driving or performing any tasks that require full mental alertness. This is because the medicine may cause drowsiness due to its H1-receptor antagonist component.


Q: Does Appetite Plus have any effect on metabolism?

The mechanism of action for Appetite Plus is stated to influence the neuro-endocrine axis, which is the system that governs the body's energy homeostasis and overall metabolic rate. This effect is central to how the product works to support nutritional status.


Q: Is Appetite Plus generally well-tolerated?

Based on regulatory information for the active ingredient, Buclizine HCl, the product is generally associated with common, usually mild side effects. These frequently reported reactions include drowsiness, a sensation of dry mouth, and dizziness.


Q: Can I take Appetite Plus if I'm taking antidepressants?

Appetite Plus is known to have additive effects with other Central Nervous System (CNS) depressants. Consultation with a physician is necessary to determine the potential for interaction, as this product has known additive effects with CNS depressants.


Q: Are there studies comparing Appetite Plus to placebo?

Yes, studies exploring the effectiveness of this product for promoting weight gain and improving appetite have primarily involved randomized controlled trials (RCTs). These types of trials typically include a placebo comparison group to evaluate the medicine's effects.


Q: Can Appetite Plus affect your sleep schedule?

Due to the presence of the H1-receptor antagonist component, Buclizine, the medicine can cause drowsiness or sleepiness. Because of this side effect, the medicine has the potential to affect an individual's normal sleep schedule.


Q: Can you take Appetite Plus if you have a sensitive stomach?

While the product is generally taken as prescribed, some labels provide conditional guidance by recommending that the medicine be taken with food if you experience mild stomach upset. This helps manage potential gastrointestinal sensitivity.


Q: Is the effect of Appetite Plus permanent or temporary?

The medicine is defined as a supplementary support that encourages food consumption and is typically used during periods of growth or recovery. This generally implies that the effect is temporary and linked to the duration of use.


Q: Can I use Appetite Plus if I have high blood pressure?

Official warnings advise that individuals with cardiovascular disease or hypertension (high blood pressure) should use the medicine with caution. This is due to the atropine-like action associated with the Buclizine component.


Q: Do you need a medical diagnosis to start taking Appetite Plus?

This product is often classified as a Prescription Drug (RX) in many regulatory regions. As it contains a pharmacological agent and is typically indicated for use only as prescribed by a physician, a medical consultation is required to assess its appropriateness.

How should Appetite Plus be stored and disposed of?

How to Store and Dispose of Appetite Plus? — Official Regulatory Information

Official regulatory documents require that Appetite Plus be stored strictly according to its labeled instructions to maintain potency and stability. Solid oral forms are typically stored at controlled room temperature (e.g., 20°C to 25°C), while injectable forms may require refrigeration (2°C to 8°C). In all cases, the medication must be kept in its original, tightly closed container and protected from excess heat, moisture, and light.

Storage Requirements

  • Mandatory Protection: Protect from moisture and light; avoid freezing.
  • Container Integrity: Keep in the original container, tightly closed.
  • Child Safety: Store out of the sight and reach of children in a secure location.

Disposal Instructions

Medication disposal must follow official protocols. Use a drug take-back program as the preferred method for unwanted or expired medicine. For injectable forms, used needles and syringes must be placed immediately into an FDA-cleared sharps disposal container.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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