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Nowadays, there are so many products of vitamin a precursor in the market and you are wondering to choose a best one.You have searched for vitamin a precursor in many merchants, compared about products prices & reviews before deciding to buy them.
You are in RIGHT PLACE.
Here are some of best sellings vitamin a precursor which we would like to recommend with high customer review ratings to guide you on quality & popularity of each items.
Pure Encapsulations – Beta Carotene with Mixed Carotenoids – Hypoallergenic Antioxidant and Vitamin A Precursor Supplement – 180 Softgel Capsules
Amazon.com
- ANTIOXIDANT SUPPORT: Beta carotene's antioxidant potential supports healthy tissues and DNA integrity.*
- IMMUNE DEFENSE: Beta Carotene supports immune health, enhances visual acuity, and quenches free radicals.*
- VITAMIN A PRECURSOR: The body naturally converts beta carotene to vitamin A as needed to offer optimal nutritional support.*
- PURE INGREDIENTS: Pure Encapsulations manufactures a line of hypoallergenic, research-based dietary supplements. Products are meticulously formulated using pure ingredients designed to deliver predictable results for the benefit of all patients, even the most sensitive.*
Pure Encapsulations – Beta Carotene with Mixed Carotenoids – Hypoallergenic Antioxidant and Vitamin A Precursor Supplement – 90 Softgel Capsules
Amazon.com
- Dietary antioxidant*
- Supports visual acuity*
- Does not contain coatings, binders, gluten (wheat, rye, barley) **, milk/dairy (casein, whey) **, egg protein **, sugar. **Verified by independent testing
- 100% TESTED INGREDIENTS: Since 2007, the FDA has mandated that supplement manufacturers test their ingredients and products. However, it allows manufacturers to perform minimal testing called "skip lot testing" meaning only a fraction of the ingredients are tested. VITAL NUTRIENTS has always exceeded these testing requirements by performing hundreds of tests on all raw materials and finished products at certified U.S. labs, allowing us to minimize potential risk of harm to the consumer.
Vital Nutrients – Natural Beta Carotene 25,000 IU – Precursor to Vitamin A and an Antioxidant – 90 Softgel Capsules
Amazon.com
- 5-HTP ENHANCED SUPER FORMULA - We supplemented 200mg of pure 5-HTP with clinically proven serotonin synthesizers, SAMe and L Tryptophan. Tryptophan is metabolized into 5-HTP in the body, while SAMe is a well-known serotonin booster. In addition, both ingredients have been indicated to help 5-HTP conversion to serotonin, creating the ideal synergistic mood booster.
- B6 FOR IMPROVED SEROTONIN CONVERSION - Our formula includes a high dosage of Vitamin B6, the main co-factor necessary to convert 5-HTP into serotonin. Vitamin B6 has been clinically shown to aid 5-HTP conversion into serotonin, while even slight B6 deficiency can greatly inhibit the efficacy of 5-HTP.
200 MG 5-HTP Plus Serotonin Synthesizers and Cofactor B6 for Improved Serotonin Conversion – Enhanced 5HTP Supplement for Serotonin Boost, Mood and Sleep Support
Amazon.com
- MAKE MORE NAD: Our bodies need NAD whenever we eat, drink, sleep, and breathe. TRU NIAGEN restores your body's NAD, every time you take it.
- EFFECTIVE RESULTS: TRU NIAGEN replenishes your NAD levels, with evidence to support it works better than NAM (nicotinamide / niacinamide) and Niacin.
- AN EASY ROUTINE: Our lightweight, easy-to-swallow capsules are a simple addition to your health routine. Take 2 capsules, every morning at the same time with a glass of water.
ABOUT THE PRODUCT
- SYNERGISTIC SEROTONIN BOOSTING FORMULA – Our 5-HTP is further enhanced with SAMe and L-Tryptophan, both of which have been clinically indicated to support serotonin production on their own. in addition, there is growing scientific evidence that both ingredients may also help the conversion of 5-HTP into 5-HT (aka serotonin).
- COFACTOR B6 FOR OPTIMAL RESULTS – We included a robust dosage of Vitamin B6, a vital prerequisite the body needs to convert 5-HTP into serotonin. Without an optimal level of B6, 5-HTP is often ineffective in increasing serotonin levels, making out enhanced 5-HTP formula superior to other leading brands.
- MOOD & SLEEP SUPPORT – Our 5-HTP augmented blend is specifically designed for maximum serotonin production, which has been shown to boost mood & reduce stress. Serotonin is also the precursor to natural melatonin production, which is well known to aid restful sleep.
 
ABOUT THE DOCTOR
Dr. Emil Hodzovic has the unique distinction of being both a practicing medical doctor and recognized authority in the nutrition and supplementation fields.
Dr. Emil is a published author and contributor to popular magazines, including: Men’s Health, Men’s Fitness & the Guardian as well as various other publications.
Emil is now a highly-sought after fitness, health & nutrition coach (when he’s not saving lives in the ER).
ABOUT THE BRAND
Harnessing Dr. Emil’s distinctive & accomplished background, our supplements are painstakingly formulated to deliver real results and are always backed by hard science and clinical data. Incorporating both time-tested & cutting-edge ingredients, our products provide superior benefits – free of gimmicks, fads and hype.
All Dr. Emil products are manufactured in the USA and come with a 100% money-back guarantee!
TRU NIAGEN – 300mg 60 Day – Vitamin B3 | Advanced NAD+ Booster | Nicotinamide Riboside NR | Increases Energy & Promotes Anti Aging
Amazon.com
- BOOST NAD+ LEVELS: Aging is linked to low levels of NAD+. Your body needs optimal levels of NAD+ to maintain a healthy body and mind. UltraNMN Nicotinamide Mononucleotide capsules provides your body with the extra boost of NAD it needs to maintain health, increase longevity, and ensure peak performance.
- INCREASE ENERGY &
- STAY ACTIVE: Low NAD levels in the body results in you feeling tired and groggy. Our energy supplement helps increase NAD levels to optimal levels to provide you with the extra boost of energy you need to power through the day without feeling tired all the time.
Ultra NMN Nicotinamide Mononucleotide NAD+ Supplement, Vitamin B3 Family, 260mg – NAD+ Precursor Energy Pills – Helps Promote DNA Repair, Boost Energy, Longevity, and Improve Metabolism – 60 Capsules
Amazon.com
- MULTIPLE FUNCTIONS: Supports energy production, resistance to stress, neurological function, and red blood cell formation*
- ACTIVE B's: Contains the active forms of B vitamins for enhanced tissue availability
- COMPREHENSIVE: An optimal balance of all eight essential B vitamins, plus choline
- FREE FROM: Every Thorne product is made with the purest ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts). This product also contains no dairy, soy, yeast, fish, or shellfish.
Thorne Research – Basic B Complex – B Vitamins in Their Active Forms – 60 Capsules
Amazon.com
- ✅ 99% Pure Authentic NMN Nicotinamide Mononucleotide. The most direct and efficient NAD+ boosting supplement. We use only the highest quality and purity NMN, bottled and tested right here in the USA. [BEWARE of fake NMN products with no NMN found in them, and others with only 50% of the label claim. Get what you pay for, stick with GMP companies like MAAC10!]
- ✅ Early animal studies suggest NMN may promote Healthy Heart, Blood Flow, Eye, Brain, Bone, Muscle and Immune Function. NMN also supports stamina, endurance & ENERGY Production!
MAAC10 NMN Nicotinamide Mononucleotide Supplement (125mg Capsules). The Most Powerful NAD+ Precursor More Stable Than Riboside. Supports DNA-Repair, Sirtuin Activation and Energy (30 Count).
Amazon.com
- TRIPLE TESTED FOR POTENCY AND PURITY - Quality you can trust! Our NMN powder contains just 1 ingredient: Pure NMN (nicotinamide mononucleotide). Each scoop delivers 150 mg of NMN with no fillers, binders, artificial colors or flavors. NMN Pro is manufactured in an FDA registered and Good Manufacturing Practice (GMP) certified facility.
- ALLOWS THE SUPPLEMENT TO BE absorbed into the blood vessels underneath the tongue
Pure Authentic NMN – Nicotinamide Mononucleotide 125mg
NMN Nicotinamide Mononucleotide is a safe and naturally occurring vitamin B3 metabolite already found in our bodies. NMN can also be found in tiny amounts (less than 2mg/100g-food) in various foods sources such as broccoli, cabbage, cucumber, avocados, edamame, mushrooms, tomatoes, raw-beef and shrimp. NMN is a direct and powerful (Nicotinamide Adenine Dinucleotide) NAD+ supplement. NMN was the actual compound used by scientists to reverse several longevity bio-markers in old mice, sparking worldwide interest in NAD research.
A 12- month long study designed to evaluate the long-term effects of oral supplementation of NMN in mice was remarkable.
The mice that supplemented NMN demonstrated significant differences in age-related body energy production, blood sugar, gene expression, mitochondrial function, eye function, bone density and immune function with no toxicity. The study showed that orally administered NMN is extremely bioavailable. NMN showed a sharp increase in the bloodstream after only 2.5 minutes. It increased NAD+ levels in the liver in as little as 10 minutes and in muscle tissue at 30 minutes.
*These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Please contact your healthcare professional immediately if you experience any unwanted side effects.
ProHealth NMN Powder (15 Grams) Nicotinamide Mononucleotide | NAD+ Precursor | Supports Anti-Aging, Longevity and Energy | Non-GMO
Amazon.com
- MAKE MORE NAD: Our bodies need NAD whenever we eat, drink, sleep, and breathe. TRU NIAGEN restores your body's NAD, every time you take it.
- EFFECTIVE RESULTS: TRU NIAGEN replenishes your NAD levels, with evidence to support it works better than NAM (nicotinamide / niacinamide) and Niacin.
- AN EASY ROUTINE: Our lightweight, easy-to-swallow capsules are a simple addition to your health routine. Take 2 capsules, every morning at the same time with a glass of water.
TRU NIAGEN – Increased 300mg | Nicotinamide Riboside NR | Advanced NAD+ Booster for Next-Level Cellular Repair & Increased Energy | Vitamin B3
Amazon.com
- Pack of 240 Softgels Total (Packed as 2 x 120 Count Bottles)
- Calcium is known for its ability to promote bone health and strength*
- Vitamin D aids in the absorption of Calcium, and supports bone density*
- This product is not intended to diagnose, treat, cure or prevent any disease
Nature’s Bounty Calcium 1200 Mg. Plus Vitamin D3, 240 Softgels (2 X 120 Count Bottles)
Amazon.com
- INCREASE ENERGY AND STAMINA – L-Arginine is a powerful amino acid that supports your muscle mass, blood flow, and healing after injuries. It is favored by athletes to boost performance during and after workouts.*
- NITRIC ACID PRECURSER – L-Arginine is an amino acid found in common foods like eggs and walnuts. It helps the body create Nitric Oxide Acid, which helps keep the circulatory system healthy and can positively affect strength training.*
