What is G3 Vitamin and the Gac Fruit Blend?

December 17, 2025 •

4 min read

Over 2000 years ago, indigenous people in southern Asia began using the prized gac superfruit for its restorative properties. This fruit is the key ingredient in the dietary supplement known as G3 vitamin, an antioxidant-rich juice blend that supports immune function and cellular rejuvenation.

Quick Summary

G3 is a proprietary dietary supplement from Pharmanex, not a single vitamin, but a juice blend based on gac fruit and three other superfruits. It is rich in highly-bioavailable carotenoid antioxidants, called lipocarotenes, which support cellular health and immune function. The supplement also contains significant levels of Vitamin C and Vitamin A from its fruit blend.

Key Points

Not a Single Vitamin: G3 is not a specific vitamin but a branded dietary supplement in the form of a superfruit juice blend.
Gac Fruit is the Core: The supplement's main ingredient is the gac fruit, a Southeast Asian fruit exceptionally rich in unique, highly-absorbable carotenoids called lipocarotenes.
Powerful Antioxidant Blend: G3 contains a synergistic blend of gac, Chinese lycium, Siberian pineapple, and cili fruits to maximize antioxidant protection.
Enhances Carotenoid Absorption: The lipocarotene structure in gac fruit is scientifically shown to improve the absorption of carotenoids like beta-carotene and lycopene.
Supports Cellular Health: By delivering potent antioxidants, G3 helps protect cells from free radical damage and supports healthy immune function.
Improves Skin Carotenoid Score: Clinical studies, often conducted by the manufacturer, indicate that regular consumption can improve skin carotenoid scores, measured via a BioPhotonic Scanner.
Used for Longevity: Gac fruit has a long history of traditional use in Southern Asia for promoting vitality and health.

G3: A Superfruit Blend, Not a Standalone Vitamin

Despite its name often being mistaken for a specific nutrient, G3 vitamin does not exist as a standard classification. Instead, "G3" refers to a proprietary dietary supplement, a nutrient-rich juice blend created by the company Pharmanex. The 'G' stands for gac, a superfruit from Southern Asia that forms the primary basis of the juice. The blend combines the gac fruit with three other superfruits to create a potent antioxidant cocktail aimed at supporting overall cellular health.

The Star Ingredient: The Gac Fruit

Native to southern Asia, the gac fruit (Momordica cochinchinensis) is a traditional food revered for centuries for its health-promoting properties. What makes the gac fruit a powerhouse is its incredibly high concentration of a unique form of carotenoids called lipocarotenes™. Carotenoids are potent antioxidants, but the lipocarotene structure found in gac—a matrix of carotenoids and fatty acids—significantly enhances their bioavailability and absorption into the body. In fact, studies show that beta-carotene from gac fruit is absorbed more effectively than that from many common dark green vegetables.

Antioxidant Protection: Gac fruit is exceptionally rich in both lycopene and beta-carotene. It contains up to 70 times more lycopene than tomatoes and 10 times more beta-carotene than carrots on a gram-for-gram basis.
Cellular Support: The powerful antioxidant properties of the gac fruit help protect cells from damage caused by free radicals, a key factor in the aging process and various diseases.
Immune Function: The high antioxidant content also plays a crucial role in fortifying the body's immune system, helping it function optimally.

The Synergistic Superfruit Blend

To amplify the benefits of the gac fruit, the G3 formula incorporates three additional superfruits, selected for their complementary nutrient profiles. This creates a synergistic effect, providing a broader spectrum of antioxidant support.

Chinese Lycium Fruit (Wolfberry): Sourced from Southern China, this fruit is a rich source of vitamins, minerals, and potent antioxidants, including carotenoids.
Siberian Pineapple (Sea Buckthorn): This tart berry from Asia is packed with flavonoids, carotenoids, and vitamins, particularly Vitamin C.
Cili Fruit: Originating from the mountains of China, the cili fruit is another antioxidant-rich component that contributes to the blend's potency.

Comparing G3 to Standard Vitamins

Understanding the distinction between a single vitamin and a complex supplement like G3 is important for making informed nutritional choices. This table compares the nature and function of G3 with a standard, single-nutrient vitamin.


Feature	G3 (Superfruit Blend)	Standard Single Vitamin (e.g., Vitamin C)
Composition	A proprietary juice blend of four superfruits.	A single isolated nutrient, often synthesized or derived from a specific source.
Primary Function	Provides broad-spectrum antioxidant support from multiple phytonutrients and a range of vitamins.	Replaces a specific nutrient deficiency or provides a targeted therapeutic dose.
Absorption	Enhanced due to naturally occurring fatty acids in lipocarotenes, improving bioavailability.	Absorption rate can vary depending on the form (e.g., ascorbic acid vs. mineral ascorbates) and presence of other food components.
Health Benefits	Supports cellular health, immune function, and antioxidant defense due to synergistic fruit compounds.	Offers specific benefits related to that nutrient, such as supporting collagen synthesis for Vitamin C.
Regulation	Regulated as a dietary supplement; claims are not evaluated by the FDA and not intended to cure diseases.	Also regulated as a dietary supplement, subject to similar labeling requirements.

Bioavailability and Efficacy

The high bioavailability of the carotenoids in G3 is a critical factor in its claimed effectiveness. The body's ability to absorb and utilize nutrients is key, and the lipocarotene structure in gac fruit facilitates this process. Research cited by Pharmanex has supported this claim, noting that gac fruit supplementation resulted in higher plasma beta-carotene levels compared to pure beta-carotene powder. Additionally, the blend's antioxidant activity has been clinically studied using a BioPhotonic Scanner to measure skin carotenoid scores, showing significant increases after consistent consumption.

Conclusion

In summary, the term "what is G3 vitamin" is a common misconception. G3 is not a single vitamin but rather a concentrated juice blend, centered around the antioxidant-rich gac superfruit. It combines gac with three other nutrient-dense fruits to create a powerful dietary supplement. Its primary benefits come from highly bioavailable carotenoids and other phytonutrients that support cellular protection and immune function. For those seeking to boost their antioxidant intake from a natural fruit source, G3 offers a proprietary option backed by some research into its absorption and effect on antioxidant levels, particularly when compared to other fruit juices.

For more information on the specific nutritional composition and bioavailability research for gac fruit, the American Journal of Clinical Nutrition has published studies on the topic: Am J Clin Nutr. 2002; 75:872–9.

Frequently Asked Questions

G3 is described as an all-natural fruit juice blend. It contains concentrates from several superfruits, but the supplement itself is a processed product, not a single, naturally occurring vitamin.

The supplement contains high levels of naturally occurring vitamins and phytonutrients from its fruit ingredients, such as Vitamin C and carotenoids that act as precursors to Vitamin A. However, it is not categorized as a single vitamin but as a blend.

According to the manufacturer, G3 is suitable for adults and children who want to increase their antioxidant intake, complement a healthy diet, or boost their antioxidant network defenses.

Lipocarotenes are a matrix of carotenoids and fatty acids found in gac fruit. This structure allows for more efficient absorption and transport of these vital nutrients in the body, making them more bioavailable.

No. Like all dietary supplements, G3 is not intended to diagnose, treat, cure, or prevent any disease. Any health claims should be viewed in the context of it being a nutritional supplement, not a medical treatment.

As G3 is made from 100% natural fruit juice, slight color variations can occur between batches due to natural fruit pigments. The manufacturer confirms that these variations do not affect the product's quality or health benefits.

The manufacturer uses a BioPhotonic Scanner to measure skin carotenoid scores, a recognized method for assessing antioxidant levels in the body. Clinical studies cited by the company have shown increased scores after G3 consumption.