Ultra D Max delivers a single high-potency weekly dose of cholecalciferol (D3) for individuals whose healthcare provider has recommended aggressive vitamin D repletion. This formula is intended for supervised short-term use only, not for daily or long-term supplementation.*
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N-acetyl cysteine is one of the most evidence-backed supplements we carry. As a precursor to glutathione — the body's primary antioxidant — NAC supports liver detoxification, respiratory health, and cellular protection. We recommend it broadly for oxidative stress, liver support, and as an adjunct to other detox protocols.
"NAC is one of the most evidence-backed supplements we carry. It works by boosting glutathione, the body's master antioxidant, which means it supports everything from liver detoxification to respiratory health to cellular protection. It's one I consistently reach for when patients need foundational antioxidant support." – Staff Pharmacist
Serving Size: 1 Capsule | Servings Per Container: 30
Capsule (hypromellose and water), microcrystalline cellulose, ascorbyl palmitate, silica, and hydroxypropyl cellulose.
Take only one capsule per week, preferably with a meal containing dietary fat, which supports absorption of this fat-soluble vitamin. Do not exceed one capsule per week unless directed by your healthcare professional.
Ultra D Max is designed for a defined repletion period, not ongoing daily use. Most providers recommend reassessing serum 25-hydroxyvitamin D levels after 8 to 12 weeks to evaluate the response and determine when to transition to a lower maintenance dose. If your provider hasn’t already established a monitoring schedule, that’s a useful conversation to have before you start.
Consult your healthcare professional before use. This product contains a high dose of vitamin D that is not intended for daily or long-term use, or for use by children or pregnant or nursing women. Individuals taking medication should discuss potential interactions with their healthcare professional. Do not use if the tamper seal is damaged. Keep tightly closed in a cool, dry place out of reach of children.
At the dose in Ultra D Max, vitamin D repletion affects several interconnected body systems. The benefits below reflect what research has examined in the context of correcting vitamin D deficiency, which is the intended use of this formula.
Serum vitamin D levels below 20 ng/mL are considered deficient, and levels between 21 and 29 ng/mL are insufficient. Research and clinical guidelines from the Endocrine Society support weekly 50,000 IU dosing as an effective strategy for reaching the target threshold of 30 ng/mL or above in deficient individuals. Several studies have supported the safety and efficacy of this weekly protocol without toxicity risk when used as directed for a defined period.*
Vitamin D plays a documented role in immune regulation, with deficiency linked to compromised immune responses. A meta-analysis of 25 randomized clinical trials found a significant overall protective effect on respiratory immune health in deficient individuals receiving vitamin D supplementation. A separate study examining the molecular response to 50,000 IU weekly found that supplementation influenced cytokine signaling pathways and NF-kB activity, among other immune signaling effects.*
Vitamin D contributes to healthy muscle fiber development and modulates inflammatory processes that affect muscle function. A randomized trial that included 50,000 IU weekly as one of the dose conditions found a significant role for vitamin D in supporting musculoskeletal comfort in those with deficiency or insufficiency. Research also suggests a role for vitamin D in skeletal muscle regeneration and repair.*
Vitamin D is central to calcium homeostasis, supporting calcium absorption in the gut and regulating parathyroid hormone activity to protect bone stores. Research indicates that vitamin D deficiency is associated with low bone mineral density and increased bone remodeling. A pooled analysis of 11 randomized trials concluded that vitamin D supplementation above 800 IU daily was favorable for maintaining hip and nonvertebral bone integrity in individuals 65 and older. Restoring adequate vitamin D levels is a foundational step in any bone health protocol.*
Vitamin D plays a role in regulating the renin-angiotensin system, which influences blood pressure. Research has also linked vitamin D deficiency to reduced arterial elasticity, lipid abnormalities, and insulin resistance. A trial using 50,000 IU weekly found the higher dose was more effective than 25,000 IU in correcting blood levels and improving insulin sensitivity in deficient subjects. A meta-analysis of 41 randomized trials found a beneficial effect of vitamin D supplementation on total cholesterol, LDL cholesterol, and triglycerides in individuals with insufficiency at baseline.*
Vitamin D supports neurologic function by regulating growth factors for neural and glial cells and neurotransmitter synthesis. Research has examined the relationship between vitamin D status and neurological outcomes, including studies using 50,000 IU weekly protocols in populations with neurological conditions. While the research in this area continues to develop, maintaining adequate vitamin D levels is considered relevant to neurological health.*
When you buy a supplement from Val Vista Pharmacy, you’re buying from a licensed, practicing pharmacy, not a marketplace, not a fulfillment warehouse. That distinction matters for a few reasons.
Every supplement we carry has been evaluated by our pharmacists for ingredient quality, formulation rationale, and manufacturer standards. Ultra D Max meets or exceeds current good manufacturing practice (cGMP) quality standards. For a high-dose product like this one, sourcing it through a licensed pharmacy rather than an unverified online seller is worth taking seriously.
Most supplement retailers can’t answer a clinical question about their products. We can. For a 50,000 IU formula especially, having access to a pharmacist who can help you understand how to use it, how to monitor your levels, and when to transition to maintenance is genuinely useful. Call us at (480) 887-0244 and we’ll give you a straight answer.
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Val Vista Pharmacy is a family-owned, independent pharmacy in Gilbert, AZ. We built our practice around the idea that people deserve more than a transaction when it comes to their health. Whether you’re filling a compounded prescription or ordering supplements for the first time, you’ll be treated like a person, not an order number.
If you are ready to work with a personalized medication pharmacy in Gilbert, AZ that puts consistency, communication, and accountability first, we would love to be your partner in care. Let's connect.
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