Vitamin D3 & K2, Quantum

We are pleased to offer free ground shipping for supplement orders over $49.** Ground rate shipping cost is $6.95 for orders below $69. Expedited shipping costs are calculated based on service from our location in Austin, Texas, to your delivery location. The shipping cost will be calculated based on your order's weight and the shipping option you choose at checkout.

**Restrictions apply: Must be regular ground shipping within the contiguous USA. A flat rate of $19.95 shipping to HI and AK applies. Free shipping does not apply to certain heavy products. Please contact us directly for details.

We offer 52 products that are certified kosher by Orthodox Union Kosher, the world’s largest and most widely recognized international kosher certification agency.

When you sign up for our AutoSave Program, you’ll receive at least 10% off your subscription. Your savings increase to 15% if your subscription order totals $100 or a whopping 20% with a subscription order of at least $250.

Once your order is placed and you have received an order confirmation, we are unable to change your order to add or remove items. To purchase additional products, you will need to place a new order. You may cancel your order before shipment by calling 1-800-370-3447.

Quantum Women’s Power is formulated with powerful nutrients to support optimal functioning during menopause:

• Libifem®. This fenugreek seed extract is clinically proven to support sexual health and promote menopausal comfort.*
• LJ100®. Our Tongkat Ali ingredient is sourced from LJ100™, a standardized root extract of Eurycoma longifolia which consistently delivers evidence-based potency. Tongkat Ali root has a long history of safe use as a natural option for improving testosterone levels and supporting reproductive health.*
• Women's Botanical Power Blend. This blend includes nutritive, zinc-rich pumpkin seed powder, hormone-balancing saw palmetto berry, and the energizing bioactive components from fermented cordyceps extract and American ginseng.*

We ship most orders within 24 hours of order submission (excluding weekends/holidays) and deliver most ground shipments within 5-7 business days. Exceptions may apply. Please allow additional days for transit during inclement weather conditions and holidays.

Clinical evidence supports the use of several different supplements for promoting restful sleep. These include:

• Melatonin. This sleep-promoting hormone is naturally released by the body in the hours leading up to bedtime. Melatonin supplementation may help support a healthy sleep-wake cycle especially when you’re trying to realign your natural sleep rhythm due to shift work or jet lag. However, it’s important to use melatonin cautiously as scientists lack information on its long-term effects.
• Magnesium. Magnesium deficiency is increasingly common and may cause nighttime symptoms like leg cramps. Easy for the body to absorb, magnesium glycinate is known for its calming properties and may promote relaxation and sleep. Research indicates that supplementing with magnesium may help some individuals fall asleep faster and stay asleep longer.
• Lavender (Lavandula angustifolia). Essential oil components of English lavender, like linalool and terpineol, support sleep by reducing stress and activity in the central nervous system, lowering blood pressure, and potentially improving mood. Lavender has a long history of use in natural medicine for its calming properties and possesses limited risk for side effects. Lavender oil can be taken by mouth or administered through aromatherapy.
• Valerian (Valeriana officinalis). This root extract contains many bioactive chemicals that can have moderate sedative and relaxing effects on the body. A possible mechanism by which valerian may improve sleep is by increasing the amount of gamma-aminobutyric acid (GABA), a calming neurochemical in the brain.11 Some studies have shown valerian to help people fall asleep faster and sleep more throughout the night.
• L-theanine. An amino acid found in tea leaves, L-theanine is another substance that triggers the release of GABA.12 L-theanine naturally calms anxiety, enhances relaxation, and provides a safe natural sleep aid without drowsiness.13 L-theanine should be used carefully as it can interact with other medications.

Explore Quantum Nutrition Labs’ specially formulated sleep-promoting supplements at Supplements for Sleep.