Short answer
Neither label predicts relief. Indica and sativa describe how a plant grows: indica plants are short and bushy, sativa plants are tall and narrow. The words say nothing about THC, CBD, or terpenes. A 2015 genetic study in PLOS ONE compared cannabis samples and found no genetic split between the two groups. The same study found that the label on the jar often did not match the chemistry inside. Nerve pain relief tracks the compounds in the batch, not the name on the label.
what is better for pain indica or sativa
What nerve pain is
Neuropathic pain comes from damage to nerves. Causes include diabetes, shingles, chemotherapy, HIV, and spinal cord injury. Symptoms include burning, electric shocks, numbness, and pain from a light touch. First-line drugs are gabapentin, pregabalin, duloxetine, amitriptyline, and lidocaine patches. These drugs help some people and cause side effects in others. Many people look for a second option.
what is better for pain indica or sativa
What the trials tested
Cannabinoids act on CB1 receptors in the brain and CB2 receptors on immune cells. A Cochrane review of cannabis-based medicines for chronic neuropathic pain found moderate-quality evidence of a small benefit. The number needed to treat was about 5 for a 30% or greater drop in pain, a range similar to some standard drugs.
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A 2008 trial at the University of California, San Francisco gave smoked cannabis to 50 people with HIV-related nerve pain. The cannabis group reported a 34% drop in pain scores. The placebo group reported 17%. The trial was short and the sample was small.
Trials of an oral spray with a 1 to 1 ratio of THC to CBD showed gains in multiple sclerosis nerve pain. Trials of vaporized cannabis in diabetic nerve damage gave mixed results.
THC, CBD, and ratio
THC attaches to CB1 receptors and changes how the brain reads pain signals. It also causes intoxication, dry mouth, a faster heart rate, and anxiety at higher doses. CBD does not intoxicate. It acts on other targets, including TRPV1 and 5-HT1A receptors, and can soften THC side effects.
Check the ratio before the label. A 1 to 1 oil, a 10 to 1 CBD-dominant oil, and a 25% THC flower are three different products with three different effects.
Terpenes and chemotype
Terpenes are aromatic compounds in the resin. Beta-caryophyllene binds CB2 receptors. Myrcene, linalool, and pinene appear in many samples. A lab report lists a chemotype: THC, CBD, and terpene percentages for that batch. Buyers who need a repeatable result should keep the batch number and the lab sheet.
Steps for a first trial
- Talk to your prescriber. Cannabis can interact with warfarin, clobazam, and some heart drugs.
- Ask for the lab report. Check total THC, total CBD, and terpenes.
- Start with 1 mg to 2.5 mg of THC, or a CBD-dominant product with no THC.
- Inhaled effects start in 10 to 15 minutes. Oil and edible effects start in 1 to 2 hours.
- Wait 2 hours before a second dose on the first day.
- Keep a log. Score pain from 0 to 10 each day for 2 weeks.
Risks
Cannabis can cause dependence in about 1 in 10 adults who use it. The rate is higher for people who start before age 18. Heavy use links to memory problems and to worse anxiety in some people. Smoking harms the lungs. Edibles cause overdose more often than inhaled forms because the onset is slow.
No cannabis product has FDA approval for nerve pain. Epidiolex, a purified CBD drug, is approved for three seizure conditions. Dronabinol and nabilone are approved for nausea from chemotherapy. Off-label use for pain is common and legal in many states, under rules that differ by state.
What to track
Track four numbers: THC mg, CBD mg, dose count, and pain score. Change one item at a time. If a batch works, buy the same batch number or a product with the same chemotype. If a product fails, the indica or sativa label will not explain why.