Unreconstituted lyophilized powder stored in the freezer lasts significantly longer, often 12-24 months, so there is no rush to reconstitute vials you do not plan to use within a month
The FDA review concerns the individual substances, not the KLOW blend

Pen Dosage Chart Dosage & Protocols Variations Standard Research Protocol Dose: 0.5 1 mg (variant 5 + 5 mg pen = 1020 clicks / variant 10 + 10 mg pen = 510 clicks) Duration: 4 6 weeks Frequency: 1 daily Cycle Interval: 4 week rest Goal / Description: Basic tissue recovery support model Enhanced Regeneration Protocol Dose: 1 1.5 mg (variant 5 + 5 mg pen = 2030 clicks / variant 10 + 10 mg pen = 1015 clicks) Duration: 8 12 weeks Frequency: Every other day Cycle Interval: 4 week rest Goal / Description: Designed for extended regenerative studies, emphasizing vascular and muscular adaptation Post-Load Model Dose: 2 mg (variant 5 + 5 mg pen = 40 clicks / variant 10 + 10 mg pen = 20 clicks) Duration: 2 4 weeks Frequency: 1 daily Cycle Interval: 2 week rest Goal / Description: Applied in post-strain or high-load experimental recovery Biohacker Protocol Dose: 0.5 mg (variant 5 + 5 mg pen = 10 clicks / variant 10 + 10 mg pen = 5 clicks) Duration: Continuous Frequency: 5 weekly Cycle Interval: 2 week rest Goal / Description: Experimental long-term maintenance design emphasizing consistent angiogenic response Possible Side Effects The BPC-157 & TB-500 blend, as research peptides involved in regeneration, may elicit side effects in experimental models, mainly at injection sites or systemically

The procedure will exacerbate the level of sensitivity you already have
Interestingly, root growth of all 0.2, 0.4, and 0.8 mg/L sulfur-treated plants showed a significant increase in the fourth week, and the decrease in root growth rate in 0.8 mg/L sulfur-treated plants after three weeks was mild compared to the changes in stem growth (Fig
This is the reason that many B12 supplements (whether they are in a pill form or even a tincture taken sublingually) often have 16,000%+ of your daily recommended intake of B12 in a single serving