is a nanoemulsified liquid supplement delivering 2,500 IU of Vitamin D3 (as Cholecalciferol) and 90 mcg of Vitamin K2 (as Menaquinone-7 / MK-7) alongside 27 mg of Phosphatidylcholine from purified sunflower seed lecithin per pump, in Quicksilver Scientific's proprietary nanoemulsified phospholipid delivery system, providing the most bioavailable form of D3 and K2 available in a single daily pump that begins absorbing in the mouth before it even reaches the intestine.

Vitamins D3 and K2 are both fat-soluble vitamins that depend on dietary fat and functional lipid absorption for bioavailability. This creates a fundamental absorption challenge: individuals with compromised fat digestion, gallbladder dysfunction, low dietary fat intake, obesity, genetic variation in D3 metabolism, or simply the age-related decline in nutrient absorption that affects most people after 40 may achieve significantly lower serum 25-OH Vitamin D concentrations from standard D3 capsule supplementation than the dose on the label would suggest. The same limitation applies to K2, which requires micellar emulsification in the intestine for optimal absorption.

Quicksilver Scientific's nanoemulsified delivery system addresses this limitation at the molecular level. Rather than encapsulating D3 and K2 in a capsule or softgel that must dissolve, emulsify, and be processed by the intestine before absorption begins, the nanoemulsification process creates sub-nanometer phospholipid vesicles that are already in the emulsified, cell-membrane-compatible form that the body requires for fat-soluble nutrient absorption. These vesicles begin absorbing through the oral mucosal membrane the moment they contact the mouth during the 30 to 90 second sublingual hold, delivering meaningful pre-gastric absorption that bypasses the intestinal absorption process entirely. This is why Quicksilver Scientific uses the term "nanoemulsified" rather than simply "liposomal" — the particle size and stability achieved by their process is significantly more refined than standard liposomal products, producing clear liquid rather than the milky opacity of crude liposome preparations, which is a direct indicator of particle size and distribution quality.

At 2,500 IU D3 and 90 mcg MK-7 per pump, this formula is positioned as a highly bioavailable daily maintenance dose for adults who already have adequate D3 status and want consistent daily support, and as a flexible dosing option for those who want to take two pumps daily for 5,000 IU D3 with 180 mcg K2 without requiring a second product. The 90 mcg MK-7 per pump is notably higher than many D3/K2 combination products, ensuring meaningful K2 activity for calcium direction and cardiovascular protection at every dose level. Use within 6 months of opening. 100 servings per bottle at one pump daily.

Key Benefits:

• Supports bone health through D3-driven calcium absorption and K2-directed calcium deposition in bone
• Supports cardiovascular health by directing calcium away from arteries via MK-7 activation of Matrix Gla Protein
• Supports healthy immune function, immune cell regulation, and immune tolerance
• Supports healthy mood, cognitive function, and neurological health via D3's neurological activity
• Supports healthy blood pressure, cardiovascular function, and arterial elasticity
• Supports healthy inflammatory balance
• Nanoemulsified delivery begins absorbing in the mouth for pre-gastric mucosal uptake
• Superior bioavailability over standard D3/K2 capsules and softgels regardless of fat intake or digestive function
• 90 mcg MK-7 per pump, the highest K2 dose per serving in the SOLUDE D3/K2 lineup
• Phosphatidylcholine 27 mg from purified sunflower seed lecithin nourishes cell membranes alongside delivery
• Flexible dosing: 1 pump for 2,500 IU D3, 2 pumps for 5,000 IU D3
• 100 servings per bottle, exceptional value for a nanoemulsified liquid D3/K2
• Citrus flavored, pleasant and easy sublingual use
• Store at room temperature, no refrigeration required

Vitamin D3 (as Cholecalciferol) — 62.5 mcg (2,500 IU) / 313% DV — Cholecalciferol, the form of Vitamin D3 identical to what is synthesized in human skin upon UVB exposure, delivered in nanoemulsified phospholipid form for immediate mucosal absorption. Supports calcium absorption in the gut, bone mineralization, immune cell regulation and activation, mood and neurological health, healthy inflammatory balance, cardiovascular function, and healthy gene expression across virtually every tissue. The nanoemulsified delivery ensures bioavailability is not compromised by fat digestive capacity, gallbladder function, obesity, or age-related intestinal absorption decline.

Menaquinone MK-7 (Vitamin K2) — 90 mcg — The long-chain, naturally occurring form of K2 with a biological half-life of approximately 72 hours, providing sustained activation of osteocalcin (directing calcium into bone matrix) and Matrix Gla Protein or MGP (preventing arterial calcium deposition) from a single daily dose. At 90 mcg per pump, Quicksilver D3K2 provides the highest MK-7 dose per serving of any D3/K2 product in the SOLUDE lineup, ensuring robust calcium-directing activity at every dose level. In nanoemulsified form, MK-7 absorption begins in the oral mucosa alongside D3, bypassing the intestinal emulsification process that standard K2 supplements depend on.

Phosphatidylcholine (from Purified Sunflower Seed Lecithin) — 27 mg — The primary phospholipid in Quicksilver Scientific's proprietary nanoemulsification system, forming the sub-nanometer vesicles that encapsulate and deliver D3 and K2. Beyond its delivery function, phosphatidylcholine provides direct cell membrane phospholipid support, contributing to membrane integrity and cellular function alongside the D3 and K2 activity.

Other Ingredients: Water, Glycerin, Ethanol, Tocofersolan (water-soluble Vitamin E for liposome membrane stability), Highly Purified Phospholipids, Natural Citrus Oils, Natural Mixed Tocopherols.

Store at room temperature out of direct sunlight. No refrigeration required. Use within 6 months of opening. Keep out of reach of children.

Adults: Take 1 pump by mouth once or twice daily. Hold in mouth for 30 to 90 seconds before swallowing. Repeat to desired dosage or as directed by your healthcare professional. Take on an empty stomach at least 10 minutes before meals for optimal mucosal absorption. May be mixed into a small amount of water if preferred.

If pregnant or nursing, consult your healthcare professional before use. If you have a medical condition or take medications, consult your healthcare practitioner before use. Monitor Vitamin D blood levels periodically. Keep out of reach of children.