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Someone on an online forum was asking whether the same liquid they use to dissolve injections under the skin (subcutaneous) — bacteriostatic water — can also be used to dissolve a large vial of NAD+ for injection into muscle (intramuscular). They mentioned a 1000 mg vial and wanted practical advice about mixing it. The post is a simple, practical how-to question, not a published study or official guidance. NAD+ (nicotinamide adenine dinucleotide) is a molecule that cells use for energy and some chemical reactions. People selling NAD+ for injections usually offer a powdered form that needs to be mixed with a sterile liquid before use. Bacteriostatic water is sterile water with a small amount of benzyl alcohol added to prevent bacteria from growing. It’s commonly used to dilute other injectable medicines because it extends how long the reconstituted solution stays usable compared with plain sterile water. The post is just a user question on a forum, not a clinical trial or medical advice. It doesn’t report a study showing safety or effectiveness. It asks whether bacteriostatic water is OK for intramuscular (IM) use with a 1000 mg NAD+ vial. That question has practical pieces: compatibility of the drug with benzyl alcohol, injection volume for IM use, and sterility. The snippet gives no data about what concentration would result, how big an IM injection that would be, or whether the product’s manufacturer recommends bacteriostatic water. So we don’t know whether the NAD+ vendor approves it, or how people who inject regularly actually do it. Why this matters: if you or someone is preparing injections at home, the choice of diluent (what you mix the powder with) affects safety and comfort. IM injections have limits on how much liquid a muscle can take comfortably in one shot. Benzyl alcohol in bacteriostatic water can cause problems in certain groups (for example, newborns), and some drugs aren’t chemically stable with it. People trying to self-administer NAD+ need clear guidance on dosage, dilution, and technique — ideally from the product instructions or a qualified clinician — because getting concentration or volume wrong can hurt or be ineffective. Caveats and risks: a forum post is not a substitute for medical or manufacturer advice. NAD+ injections aren’t universally regulated; formulations and purity vary. Benzyl alcohol can cause allergic reactions in some people, and using the wrong solvent or incorrect reconstitution can change how the product behaves or raise infection risk if sterile technique isn’t followed. Intramuscular injections should use appropriate needle size and avoid injecting too large a volume into one site. If you’re considering this, check the manufacturer’s instructions, ask a pharmacist or healthcare provider, and avoid doing complex mixing at home without training. Bottom line: the forum question is reasonable, but you need product-specific and medical guidance before using bacteriostatic water to mix a 1000 mg NAD+ vial for IM injection.
Source: r/Biohackers